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NL1037695C2 - String for a racket, pre-woven web and a racket comprising such a string, a string receiving structure, and a tool for handling such a string, assemblies thereof, and a method for stringing a racket. - Google Patents

String for a racket, pre-woven web and a racket comprising such a string, a string receiving structure, and a tool for handling such a string, assemblies thereof, and a method for stringing a racket. Download PDF

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Publication number
NL1037695C2
NL1037695C2 NL1037695A NL1037695A NL1037695C2 NL 1037695 C2 NL1037695 C2 NL 1037695C2 NL 1037695 A NL1037695 A NL 1037695A NL 1037695 A NL1037695 A NL 1037695A NL 1037695 C2 NL1037695 C2 NL 1037695C2
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NL
Netherlands
Prior art keywords
string
rib
racket
ribs
receiving structure
Prior art date
Application number
NL1037695A
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Dutch (nl)
Inventor
Hendricus Franciscus Trigt
Original Assignee
Hendricus Franciscus Trigt
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Filing date
Publication date
Application filed by Hendricus Franciscus Trigt filed Critical Hendricus Franciscus Trigt
Priority to NL1037695A priority Critical patent/NL1037695C2/en
Application granted granted Critical
Publication of NL1037695C2 publication Critical patent/NL1037695C2/en

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Description

String for a racket, pre-woven web and a racket comprising such a string, a string receiving structure, and a tool for handling such a string, assemblies thereof, and a method for stringing a racket.
5
DESCRIPTION
10 Field of the invention
The invention relates to a string for a racket, a pre-woven web comprising at least one such a string, a string receiving structure for receiving and abutting such a string, an 15 assembly of such a string and such a string receiving structure. Furthermore, the invention relates to a racket comprising at least one such a string receiving structure and an assembly of such a racket and at least one such a string receiving structure and such a pre-woven web. In addition, the 20 invention relates to a tool for handling such a string.
Finally, the invention relates to a method for stringing a racket.
25 Background of the invention A conventional string for a racket is relatively smooth.
Usually, a racket is stringed by only one such string, whereby the string is woven through holes at the periphery of the 30 racket head and between the other strings. When a string is broken or the tension of the string has to be increased, the racket has to be re-stringed. This can be performed by a user of the racket having experience with stringing. However, often 103 7 695.
2 this is performed by an expert using adequate equipment to achieve consistency and reproducibility. This is time consuming and costly.
5 One way to solve the problem of re-stringing is by using prewoven webs of which the strings can be inserted in openings in the racket frame to construct a functional racket. US 6402646 describes a racket in which the frame is adapted to hold a specific structure at the end of the strings that are forming 10 a web. A disadvantage of this system is that dedicated equipment has to pre-stretch the strings of the web and has to place the web into the frame under tension. Therefore, inserting the pre-woven web requires the work of a expert.
15 Another disadvantage of this system is that it is not possible to increase the tension of the strings US 6280354 describes fasteners to firmly hold the free-end of an individual string segment to the frame. The fastener 20 comprises an enclosure body, a wedge shaped string receiving structure and pressing means. The inner passage-way of the string receiving structure contains transversal corrugations to match the corrugations of the string surface on the individual string segment. The string receiving structure is 25 made of a compliant material, such as nylon or similar polyamide, that allows the passage-way to radially contract when a compressive force is brought to bear on the wedge shaped outer surface.
30 In theory this system enables insertion of a pre-woven web into a frame performed by the user of the racket. However, because the fasteners are composed of multiple elements this 3 insertion and concomitantly the adjustment of the tension will be difficult to perform.
In US 5836053 and US 4214349 respectively a cable tie and a 5 tie wrap are disclosed. These systems comprise straps comprising protrusions with asymmetric cross section that can be guided through a specific opening, whereby guiding one direction is much easier that guiding the opposite direction. The fixed arrangement of a tie wrap / cable tie is dependent 10 on the curvature of the strap relative to its receiving structure so as a string for stringing a racket this system can not easily be used. In addition, because of its angular cross section, the strap is not suitable as a string for stringing a racket.
15
The object of the present invention is to provide a string for a racket the tension of which can be increased while still being connected to the racket. Furthermore it is an object of this invention to provide a pre-woven web for stringing a 20 racket relatively easily without the need for relatively expensive equipment or hiring the services of an expert. A further object is to provide assemblies of such a string and/or such a pre-woven web and a string receiving structure or racket. Furthermore, it is an objet of this invention to 25 provide a cost effective tool for handling such a string for tensioning the string. Finally it is an object of this invention to provide a method for stringing a racket that can be performed using simple and cost-effective tools.
30
Summary of the invention 4
The invention provides a string for a racket, comprising at least one radially outwardly projecting first rib, which first rib has a first asymmetric cross section. • 5 The first asymmetric cross section of the first rib enables arrangement of the string with respect to a string receiving structure, whereby the force required to pull the string in a first direction is higher that the force required to pull the string in a second, preferably opposite, direction, and is 10 compatible with the tension required for a functional racket. The string receiving structure can be a racket frame or an insert that can be inserted in an opening of a racket frame. The string receiving structure preferably comprises a surface, preferably belonging to a second rib, see hereunder, that is 15 able to at least partially abut one side of the first rib.
This feature enables a person to string a racket by pulling the string, with a force that can be measured by the use of the special tool, in one direction with respect to a matching 20 string receiving structure.
With "racket" is meant, a racket for toys and for games, especially a racket for ball games, particularly a tennis, badminton, squash or racquetball racket. With "radially 25 outwardly projecting" is meant, extending away from the longitudinal axis of the string and not parallel thereto, preferably perpendicular thereto.
With "rib" is meant a projecting member having a elongated 30 shape. With "cross section" is meant a section of the rib mainly perpendicular to the length of the string. Preferably the rib is extending mainly perpendicular to the longitudinal axis of the string so the direction of asymmetry of the cross 5 section is mainly parallel to the longitudinal axis of the string.
The string preferably comprises a plurality of first ribs that 5 are equally oriented and arranged in a longitudinal direction of the string. The plurality of first ribs enables stronger arrangement of the string with respect to a string receiving structure. Preferably the string receiving structure comprises a pattern of recesses matching the pattern of the plurality of 10 first ribs to hold the string in its correct position.
With "equally oriented" is meant, that the orientation with respect to its asymmetric form is equal. Pulling this string in one direction will therefore require a higher pulling force 15 than pulling the string in another, preferably opposite, direction. This enables a high tension of the string in the racket frame and easy stringing of a racket. Preferably, the ribs are arranged in a direction mainly parallel to the longitudinal axis of the string.
20
Another advantage is that by having a plurality of first ribs, the axial disposition of the string relative to a string receiving structure can be adjusted. When for example the tension of the string decreases as a consequence of intensive 25 use of the racket, one has to pull the string such that another first rib or another plurality of first ribs is responsible for abutment of the string with the string receiving structure.
30 The plurality of first ribs can be present on the entire length of the string but preferably it is present only on a segment, preferably the segment that is expected to be contacted with the string receiving structure.
6
In one preferred embodiment the at least one of the first ribs of the plurality of first ribs has an appearance that is different from other first ribs of the plurality of first 5 ribs. Preferably the at least one of the first ribs of the plurality of first ribs wit a different appearance is located such that it marks a position of the string relative to the racket frame or of the pre-woven web comprising this string relative to the racket frame. This enables an easy check on 10 whether the web is centrally located within the frame, whilst stringing the racket. This different appearance can be effectuated by using different colour or shades.
In a preferred embodiment of the string according to this 15 invention, the first ribs in the plurality of first ribs are arranged at an uniform interval and have comparable first cross sections, and each first rib of the plurality of first ribs has an annular shape. This results in more uniform first ribs and more uniform arrangement of the first ribs. Using the 20 string of this preferred embodiment the radial and axial disposition relative to the string receiving structure is less critical.
The thickness of a string for a tennis racket is in the order 25 of 1 mm. Preferably, the height of the first ribs for such a string is in the order of 0,1 mm and the width of the first rib ranges from 0,1 - 0,2 mm. Hence a string comprises in the order of 50-100 first ribs/cm, and so would the string receiving structure. Preferably, the length of the part of the 30 string comprising first ribs is in the order of 5 - 10 cm.
The main difference of such a string compared to the described tie wrap / cable tie is that the first rib of the string 7 according to this invention has an annular shape so the string is surrounded by potentially abutting surfaces. This causes the arrangement of the string according to this invention to be independent of a curvature relative to the string receiving 5 structure. A generally co-axial arrangement of the string relative to the string receiving channel, see hereunder, will be sufficient. Preferably, by pulling the string through the string receiving structure their mutual disposition will be enforced.
10
Preferably, the string according to this invention comprises a first segment and a second segment each comprising at least one first rib, whereby the at least first rib of the first segment is a mirror image of the at least first rib of the 15 second segment.
The first segment can be used to anchor the string into a first string receiving structure by pulling it in a first direction and the second segment can be used to anchor the 20 string into a second string receiving structure by pulling it in a second direction other than, preferably opposite to, the first direction. The string receiving structures can be an integral part of the racket frame or by an insert in the racket frame. The length of smooth string (not featuring a 25 first rib) between the two segments corresponds with the distance the string has to bridge to form a web for the racket. Preferably the second direction is opposite to the first direction but when the string is looped by another string and is making a curve, the second direction can be 30 perpendicular to the first direction. Preferably the web is composed of singular strings inserted at both ends in the string receiving structures present at opposing positions in 8 the racket frame. The tension of each string can be adjusted individually.
Preferably, the first rib is elastically deformable. In case 5 the first rib has an annular shape either the first rib itself or the string receiving structure, or both, has to be elastically deformable to be able to be arranged with respect to each other through abutment.
10 In one preferred embodiment of the string according to this invention the deformability in a first direction along the longitudinal axis of the string is larger than the deformability in a second direction, reversed to the first direction, along the longitudinal axis of the string. This 15 difference in deformability can be due to the, asymmetric form of the first rib. It is also possible that the first rib is comprised of at least two parts having different deformability properties. The advantage of this difference in deformability is that pulling this string through a matching string 20 receiving structure in the first direction will require a higher pulling force than pulling it in the second direction. Of course the difference in deformability of the first rib should correspond to the asymmetry of the first rib.
25 Preferably, the first rib comprises, on a first side of its most outwardly projected part, a first abutment surface, and, on a second side of its most outwardly projected part opposing the first side, a second abutment surface, whereby the first abutment surface is generally steeper than the second abutment 30 surface. With "steeper" is meant, having a sharper slope with respect to the longitudinal axis of the string. With "generally steeper" is meant, that the abutment surface can be corrugated but still is declining faster. The first and/or 9 second abutment surface can be curved or straight. The slope of the abutment surface is important for the ability to withstand an abutting force. The steeper the slope with respect to the longitudinal axis of the string the higher the 5 abutting force that can be withstand. The exact relation between the slope of the abutment surface and its ability to withstand; an abutting force at least partly relies on its counter surface of the string receiving structure. The function of the first abutting surface is to abut a counter 10 surface of the string receiving structure in order to hold the string in this structure. The second abutting surface abuts a counter surface of the string receiving structure as unavoidable necessity of being on the other side of the rib.
15 In addition, the invention provides a pre-woven web comprising at least one string as described above. Preferably all strings of the web are according to this invention. This web can be produced as one piece. The racket user can, by him or herself, pull all strings through the corresponding string receiving 20 structure present in a racket and thus produce a functional racket. Because of the asymmetry of the rib(s), once the string has been pulled in one direction through a string receiving structure it will be very difficult to move the string in the opposite direction. The counter force imposed by 25 the string receiving structure caused by the asymmetry of the rib should be higher than the pulling force of the string having its required tension so that it is possible to create a string tension that is recommended for the racket. The strings can be mutually looped but preferably the strings are arranged 30 linearly. The strings can be mutually connected by use of adhesives or can be melted together.
10
Furthermore, the invention provides a string receiving structure for receiving and abutting a string as described above. The string receiving structure can be part of the racket frame itself, but preferably the string receiving 5 structure is a separate structure that can be inserted in an opening of the racket frame, as the use of inserts renders replacement possible, if needed. The string receiving structure can be inserted in an existing opening of a regular racket or this existing opening can be adjusted to be able to 10 incorporate the string receiving structure. Preferably, the string receiving structure can be inserted such that the racket frame imposes an abutting force on the string receiving structure, which abutting force is opposed to the pulling force imposed by the string. The string receiving structure 15 can also be attached to the racket frame by other means.
Preferably, the string receiving structure comprises at least one inwardly projecting second rib partially defining a recess for incorporating at least a part of one first rib. The string 20 receiving structure could comprise a groove but preferably comprises a channel at least partially formed by the rib. The recess enables the second rib to be deformed by a first rib when the string is pulled through the string receiving structure.
25
Preferably, the second rib has a second asymmetric cross section.
Preferably, the second rib has an annular shape and thereby 30 forms a first string receiving channel.
Preferably, the string receiving structure comprises a plurality of second ribs that are arranged at an uniform 11 interval in a longitudinal direction of the first channel and are equally oriented. Preferably the second ribs have comparable second cross sections to obtain a more uniform arrangement of the second ribs. Therefore, the radial and 5 axial disposition relative to the string is less critical.
With "equally oriented" is meant, that the orientation with respect to its asymmetric form is equal. Pulling the string described above through such a string receiving structure in 10 one direction will therefore require a higher pulling force than pulling the string in the opposite direction. This enables a high tension of the string in the frame.
Another advantage is that by having a plurality of second 15 ribs, the position of the string relative to a string receiving structure can be changed. When for example the string is stretched whilst in use, the tension in the racket frame decreases as a result, one has to pull the string such that another second rib or another plurality of second ribs is 20 abutting the ribs of the string.
Preferably, the second rib is elastically deformable, the deformability in a first direction along the longitudinal axis of the first channel being larger than the deformability in a 25 second direction, reversed to the first direction, along the longitudinal axis of the first channel.
This difference in deformability can be due to the asymmetric form of the second rib. It is also possible that the second 30 rib consists of at least two parts having different deformability properties. Preferably the first rib as well as the second rib are elastically deformable. The extent of 12 deformability should be such that a required tension of the string can be obtained and maintained.
Preferably, the second rib comprises, on a third side of its 5 most outwardly projected part, a third abutment surface, and, on a fourth side of its most outwardly projected part opposing the third side, a fourth abutment surface, whereby the third abutment surface is generally steeper than the fourth abutment surface.
10
With "steeper" is meant, having a sharper slope with respect to the longitudinal axis of the first channel. With "generally steeper" is meant, that the abutment surface can be corrugated but still is declining faster. The abutment surface can be 15 curved or straight. Because the third abutment surface is steeper it is able to withstand a greater abutting force. The steeper the slope with respect to the longitudinal axis of the channel, the higher the abutting force that can be withstood.
20 Furthermore, the invention provides an assembly of a string as described above and a string receiving structure as described above.
Moreover, the invention provides a racket comprising at least 25 one string receiving structure as described above. With "racket" is meant, a racket for toys and for games, especially a racket for ball games, particularly a tennis-, badminton-, squash- or racquetball- racket.
30 Preferably, the tension of the string can be increased without having to re-string the racket. Therefore the string should have a free end that can be used to pull the string. The possibility to increase the tension of the part of the string 13 forming the web should however not impede the use of the racket by the disturbing presence of free ends. Therefore, a preferred embodiment of a racket according to the invention comprises a racket head comprising at least one outwardly open 5 recess for keeping at least a part of a free end of the string.
With "free" is meant, not incorporated by a string receiving structure and not part of the web of the racket. The free end 10 preferably is, except for a tool, completely out of reach so the free end will not be disturbing when using the racket. This free end can be used as a grip for pulling the string using a tool. Thus, the tension of the part of the string forming the web can be increased.
15
Preferably, the recess is formed as a outwardly open groove extending along at least a part of the outer periphery of the racket head. The cross section of the head frame can have a U-form. The free ends of the strings can be covered by a 20 protecting tape.
Furthermore, the invention provides an assembly of a racket as described above, at least one string receiving structure as described above and a pre-woven web as described above.
25
In addition, the invention provides a tool for handling a string as described above, which tool comprises a clamp area that in a first position, which first position is to clamp the string, comprises at least one inwardly projecting third rib 30 partially defining a recess for incorporating at least a part of one first rib. Preferably the third rib has a third asymmetric cross section. The tool can be a torque wrench-like instrument that matches with the required tension of the 14 string. In order to prevent damage to the frame when using this tool, which acts like a lever, a spreader should be used.
Preferably the third rib has an annular shape and thereby 5 forms a second string receiving channel. Preferably it comprises a plurality of third ribs that are arranged at an uniform interval in a longitudinal direction of the second channel and are egually oriented. Preferably the third rib is rigid because then slippage of the string with respect to the 10 clamp area will be minimised.
Furthermore, the invention provides an assembly of a tool as described above, and a string as described above.
15 Furthermore, the invention provides an assembly of a tool as described above and a racket as described above.
Finally, the invention provides a method of stringing a racket comprising providing the racket with at least one string 20 receiving structure for receiving and abutting a string.
Preferably a string, as described above, is used. By providing such a racket it can easily be stringed using a string or a pre-woven web according to this invention. Preferably the method further comprises providing a pre-woven web comprising 25 at least one such string. By using a pre-woven web, possibly mutually connected, the strings do not have to be woven when stringing the racket. Preferably some ribs have a different appearance to indicate a desirable position of the string or pre-woven web with respect to the racket, to facilitate 30 stringing the racket. The string should be pulled through the string receiving structure until the ribs of the string meet the ribs of the string receiving structure. With help of the indicated rib the position of the string relative to the 15 racket frame can be fine tuned. Subsequently the special tool is used to pull the string through the string receiving structure, measuring the pulling force. The pulling force determines the tension of the stringing. Preferably a tool 5 according to this invention is used. In a final round, using the tool, the tension can be fine tuned. Ends of strings extending beyond the perimeter of the racket will be cut; a tape may be applied to cover and protect the perimeter.
10
Brief description of the drawings
The invention will be further elucidated with reference to a non-limitative illustrative embodiment of a string, a string 15 receiving structure, and a tool according to the present invention.
Fig. 1 (A and B) shows a schematic illustration of an axial cross section of the illustrative 20 embodiment of the string in an enlarged view (Fig. 1A) and entirely (Fig. IB).
Fig. 2 (A - E) shows axial cross sections of the illustrative embodiment of the string together with the embodiment of a string 25 receiving structure inserted in a racket.
Fig. 3 shows a schematic front view of the illustrative embodiment of a racket, a pre-woven web and a tool.
30
Detailed description of the embodiment 16
Fig. 1A and IB show that the string (1) comprises radially outwardly projecting first ribs (3), which first ribs (3) have a first asymmetric cross section. The first ribs (3) are equally oriented and arranged in the longitudinal direction of 5 the string (1) . They are arranged at an uniform interval and have comparable first cross sections, and all first ribs (3) have an annular shape perpendicular to the direction of the string. One of the first ribs (3) of the plurality of first ribs (6) has an appearance that is different from other first 10 ribs (3) which can be indicative for a certain disposition with respect to the racket and/or a certain tension of the string. In figure IB is shown that this string (1) comprises a first segment (8) and a second segment (9) each comprising first ribs (3) , whereby all first ribs (3) of the first 15 segment (8) are a mirror image of the six first rib (3) of the second segment (9) . In fig. 1 A is shown that the first ribs (3) comprise, on a first side (12) of their most outwardly projected parts (5) , first abutment surfaces (13), and, on a second side (14) of their most outwardly projected parts (5) 20 opposing the first sides (12), second abutment surfaces (15), whereby the first abutment surfaces (13) are steeper than the second abutment surface (15).
Figures 2A and 2B show a cross section of a racket head (34) 25 in which a string receiving structure (18) for receiving and abutting a string (1) according to this invention is inserted. In both figures the string receiving structure (18) is inserted such that part of a racket head (34) has an abutting capacity on the string receiving structure (18), of which the 30 direction is opposed to the pulling force imposed by the string. Preferably, the string receiving structure (18) is fixedly arranged to the frame of the racket head. Pulling the string to the right, as shown in these figures, will be 17 relatively easy. The tension of the string (1) in the racket should hold the string receiving structure (18) tightly to the frame of the racket head (34). Pulling the string to the left, as shown in this figure, will be far more difficult because of 5 the abutting surfaces of the string (13) and the abutting surfaces (30) of the string receiving structure (18) interlock, see also fig. 2 C-E). In fig. 2A is shown that the free end (36) of the string (1), that is the end that is not incorporated by a string receiving structure and that is not a 10 part of the web of the racket, is kept in an outwardly open recess (35) of the racket head (34). The free end (36) is, except for a specific tool, mainly out of reach so the free end will not be disturbing when using the racket. The recess could be covered with tape to exclude any disturbing effect of 15 this free end. By using this free end (36) as a grip for pulling the string (1) using a tool (40, shown in Fig. 3), the tension of the part of the string forming the web can be increased. Fig. 2C shows an enlargement of the indicated area of Fig. 2A. Fig. 2D illustrates the string receiving structure 20 without the string, giving a detail of Fig. 2C. In fig. 2B the string receiving structure is inserted in a opening of a racket, which racket does not have an outwardly open recess as shown in Fig. 2A. The racket can be a regular racket in which a existing opening that is normally used to guide a string has 25 been adjusted to be able to incorporate the string receiving structure. However, here the string has to be cut without leaving a free end because the free end would otherwise be disturbing. Fig. 2E shows an enlargement of the indicated area of Fig. 2C. Here is shown that the string receiving structure 30 (18) comprises inwardly projecting second ribs (19) defining a recess (20) for incorporating at least a part of the first rib (3) . The second ribs (19) have a second asymmetric cross section and an annular shape, and are forming a first string 18 receiving channel (21) . All second ribs (19) are arranged at uniform intervals in the longitudinal direction of the first channel (21) and are equally oriented. Referring to Fig. 2E, the second rib (19) comprises, on a third side (28) of its 5 most outwardly projected part (29) , a third abutment surface (30), and, on a fourth side (31) of its most outwardly projected part (29) opposing the third side (28), a fourth abutment surface (32), whereby the third abutment surface (30) is steeper than the fourth abutment surface (32) . In this 10 embodiment the third abutment surfaces (30) of all second ribs (19) will abut a plurality of first abutment surface (13) of the string (1) and thereby strongly withstand the counter force caused by the required tension of the string (1).
15 For reasons of clarity the illustrative embodiment shown in figures 1 and 2 comprises a string with few first ribs and a string receiving structure with few second ribs. However, a preferred embodiment would comprise a string with many small first ribs and a string receiving structure with a lot of 20 second ribs to match.
Referring to figure 3, the strings (1) of the pre-woven web (17) are pulled through the string receiving structures (18) (not shown) in the racket (33). For details see Fig. 2 (A-E).
25 For reasons of clarity not all strings (1) of the pre-woven web (17) are drawn. Only the middle part of the vertically and horizontally positioned plurality of strings is shown. For practical reasons the ribs are not drawn with their asymmetric cross sections but as dotted lines. This form should however 30 not be considered as the form of the ribs. The ends of all strings (1) in the pre-woven web (17) have to be cut such that they will not protrude form the periphery of the racket head (34). Preferably the remaining free end (36) will be kept in a 19 groove extending along the outer periphery of the racket head (not shown, see Fig. 1A) . The tool (40) comprises a circular abutting surface, to be used as a lever, abutting to the racket head. In case the string receiving structure is loosely 5 fixed in the racket frame, the tool (40) preferably comprises an abutting surface to keep the string receiving structure (18) in place.
103 7695

Claims (30)

1. Snaar (1) voor een racket (2) met het kenmerk, dat deze ten minste één radiaal naar buiten uitstekende eerste 5 rib (3) omvat, welke eerste rib (3) een eerste asymmetrisch dwarsdoorsnede (4) heeft.A string (1) for a racket (2), characterized in that it comprises at least one radially outwardly projecting first rib (3), which first rib (3) has a first asymmetrical cross-section (4). 2. Snaar (1) volgens conclusie 1, met het kenmerk, dat deze een pluraliteit aan eerste ribben (3) omvat, welke 10 eerste ribben (3) op vergelijkbare wijze zijn georiënteerd en in een lengterichting van de snaar zijn gepositioneerd.2. String (1) according to claim 1, characterized in that it comprises a plurality of first ribs (3), which first ribs (3) are oriented in a similar manner and are positioned in a longitudinal direction of the string. 3. Snaar (1) volgens conclusie 2, met het kenmerk, dat ten 15 minste één (6) van de eerste ribben (3) van de pluraliteit aan eerste ribben (3) een uiterlijk heeft dat verschilt van de andere eerste ribben (3) van de pluraliteit aan eerste ribben (3).3. String (1) according to claim 2, characterized in that at least one (6) of the first ribs (3) of the plurality of first ribs (3) has an appearance that differs from the other first ribs (3) ) of the plurality of first ribs (3). 4. Snaar (1) volgens conclusie 2 of 3, met het kenmerk, dat de eerste ribben (3) van de pluraliteit aan eerste ribben (3) gelijkmatig zijn gepositioneerd en een vergelijkbare eerste dwarsdoorsnede (4) hebben, en elke eerste rib (3) van de pluraliteit aan eerste ribben (3) 25 ringvormig is.String (1) according to claim 2 or 3, characterized in that the first ribs (3) of the plurality of first ribs (3) are uniformly positioned and have a comparable first cross-section (4), and each first rib ( 3) of the plurality of first ribs (3) is annular. 5. Snaar (1) volgens één der conclusies 1-4, met het kenmerk, dat deze een eerste segment (8) en een tweede segment (9) omvat, waarbij elk segment (8 en 9) ten 30 minste één eerste rib (3) omvat, waarbij de ten minste één eerste rib (3) van het eerste segment (8) een spiegelbeeld is van de ten minste één eerste rib (3) van het tweede segment (9). 1 03 76 9 55. String (1) as claimed in any of the claims 1-4, characterized in that it comprises a first segment (8) and a second segment (9), wherein each segment (8 and 9) has at least one first rib ( 3), wherein the at least one first rib (3) of the first segment (8) is a mirror image of the at least one first rib (3) of the second segment (9). 1 03 76 9 5 6. Snaar (1) volgens één der conclusies 1-5, met het kenmerk, dat de eerste rib (3) elastisch vervormbaar is. 5String (1) according to one of claims 1 to 5, characterized in that the first rib (3) is elastically deformable. 5 7. Snaar (1) volgens conclusie 6, met het kenmerk, dat de vervormbaarheid in een eerste richting (10) langs de lengte-as (7) van de snaar (1) groter is dan de vervormbaarheid in een tweede richting (11), 10 tegengesteld aan de eerste richting (10), langs de lengte-as (7) van de snaar (1).String (1) according to claim 6, characterized in that the deformability in a first direction (10) along the longitudinal axis (7) of the string (1) is greater than the deformability in a second direction (11) 10 opposite to the first direction (10), along the longitudinal axis (7) of the string (1). 8. Snaar (1) volgens één der conclusies 1 - 7, met het kenmerk, dat de eerste rib (3) aan een eerste zijde 15 (12) van zijn meest naar buiten stekende deel (5), een eerste afsteunvlak (13) en, aan een tweede zijde (14) van zijn meest naar buiten stekende deel (5), afgekeerd van de eerste zijde (12), een tweede afsteunvlak (15) omvat, waarbij het eerste afsteunvlak (13) in het 20 algemeen steiler is dan het tweede afsteunvlak (15).A string (1) as claimed in any one of claims 1 to 7, characterized in that the first rib (3) on a first side (12) of its most projecting part (5), a first supporting surface (13) and, on a second side (14) of its most projecting part (5), remote from the first side (12), comprises a second supporting surface (15), the first supporting surface (13) being generally steeper then the second support surface (15). 9. Voorgeweven net (17) omvattende ten minste één snaar (1) volgens één der conclusies 1-8.A pre-woven net (17) comprising at least one string (1) according to any one of claims 1-8. 10. Snaarontvangende structuur (18) voor het ontvangen en afsteunen van een snaar (1) volgens één der conclusies 1-8.A belt receiving structure (18) for receiving and supporting a belt (1) according to any one of claims 1-8. 11. Snaarontvangende structuur (18) volgens conclusie 10, 30 met het kenmerk, dat deze in een opening van het racket (2) kan worden geïnsereerd.String-receiving structure (18) according to claim 10, characterized in that it can be inserted into an opening of the racket (2). 12. Snaarontvangende structuur (18) volgens conclusie 10 of 11, met het kenmerk, dat deze ten minste één tweede rib (19) omvat, welke tweede rib (19) gedeeltelijk een uitsparing (20) voor het opnemen van ten minste een 5 deel van een eerste rib (3) definieert.12. String-receiving structure (18) according to claim 10 or 11, characterized in that it comprises at least one second rib (19), which second rib (19) partially has a recess (20) for receiving at least a part of a first rib (3). 13. Snaarontvangende structuur (18) volgens conclusie 12, met het kenmerk, dat de tweede rib (19) een tweede asymmetrisch dwarsdoorsnede heeft. 10String-receiving structure (18) according to claim 12, characterized in that the second rib (19) has a second asymmetrical cross-section. 10 14. Snaarontvangende structuur (18) volgens conclusie 12 of 13, met het kenmerk, dat de tweede rib (19) ringvormig is en daarbij een eerste snaarontvangend kanaal (21) vormt. 15String-receiving structure (18) according to claim 12 or 13, characterized in that the second rib (19) is annular and thereby forms a first string-receiving channel (21). 15 15. Snaarontvangende structuur (18) volgens één der conclusies 12-14, met het kenmerk, dat deze een pluraliteit aan tweede ribben (19) omvat, welke tweede ribben (19) gelijkmatig zijn gepositioneerd in een 20 richting parallel aan de lengte-as van het eerste kanaal (21) en op vergelijkbare wijze zijn georiënteerd.15. String-receiving structure (18) as claimed in any of the claims 12-14, characterized in that it comprises a plurality of second ribs (19), which second ribs (19) are uniformly positioned in a direction parallel to the longitudinal axis. of the first channel (21) and are oriented in a similar manner. 16. Snaarontvangende structuur (18) volgens conclusie 14 of 25 15, met het kenmerk, dat de tweede rib (19) elastisch vervormbaar is, waarbij de vervormbaarheid in een eerste richting langs de lengte-as van het eerste kanaal (21) groter is dan de vervormbaarheid in een tweede richting, tegengesteld aan de eerste richting, 30 langs de lengte-as van het eerste kanaal (21).String-receiving structure (18) according to claim 14 or 15, characterized in that the second rib (19) is elastically deformable, the deformability being greater in a first direction along the longitudinal axis of the first channel (21) then the deformability in a second direction, opposite to the first direction, along the longitudinal axis of the first channel (21). 17. Snaarontvangende structuur (18) volgens één der conclusies 14-16, met het kenmerk, dat de tweede rib (19) aan een derde zijde (28) van zijn meest naar buiten stekende deel (29), een derde afsteunvlak (30) en, aan een vierde zijde (31) van zijn meest naar buiten stekende deel (29), afgekeerd van de derde zijde 5 (28), een vierde afsteunvlak (32) omvat, waarbij het derde afsteunvlak (30) in het algemeen steiler is dan het vierde afsteunvlak (32).String-receiving structure (18) according to one of claims 14-16, characterized in that the second rib (19) on a third side (28) of its most projecting part (29), a third supporting surface (30) and, on a fourth side (31) of its most projecting part (29), remote from the third side (28), comprises a fourth supporting surface (32), the third supporting surface (30) being generally steeper then the fourth support surface (32). 18. Samenstel van een snaar (1) volgens één der conclusies 10 1 - 8 en een snaarontvangende structuur (18) volgens één der conclusies 12 - 17.Assembly of a string (1) according to one of claims 1 to 8 and a string-receiving structure (18) according to one of claims 12 to 17. 19. Racket (33) omvattende ten minste één snaarontvangende structuur (18) volgens één der conclusies 12 - 17. 15A racket (33) comprising at least one string-receiving structure (18) according to any one of claims 12-17 20. Racket (33) volgens conclusie 19, met het kenmerk, dat dit een rackethoofd (34) omvat, welk rackethoofd (34) ten minste één naar buiten toe open uitsparing (35) voor het houden van ten minste een deel van een vrij 20 uiteinde (36) van de snaar (1) omvat.Racket (33) according to claim 19, characterized in that it comprises a racket head (34), which racket head (34) has at least one outwardly open recess (35) for holding at least a part of a free 20 end (36) of the string (1). 21. Racket (33) volgens conclusie 20, met het kenmerk, dat de uitsparing is gevormd als een naar buiten toe open groeve (37) die zich langs ten minste een deel van de 25 buitenste periferie van het rackethoofd uitstrekt.A racket (33) according to claim 20, characterized in that the recess is formed as an outwardly open groove (37) which extends along at least a portion of the outer periphery of the racket head. 22. Samenstel van een racket (33) volgens één der conclusies 19-21, ten minste één snaarontvangende structuur (18) volgens één der conclusies 12 - 16 en 30 een voorgeweven net (17) volgens conclusie 9.A racket assembly (33) as claimed in any one of claims 19 to 21, at least one string receiving structure (18) as claimed in any one of claims 12 to 16 and a pre-woven net (17) as claimed in claim 9. 23. Hulpmiddel (40) voor het hanteren van een snaar (1) volgens één der conclusies 1-8, met het kenmerk, dat dit een klemgebied omvat, welk klemgebied in een eerste positie, welke eerste positie voor het klemmen van de snaar (1) is, ten minste één naar binnen toe uitstekende derde rib omvat, welke derde rib 5 gedeeltelijk een uitsparing (43) voor het opnemen van ten minste een deel van een eerste rib (3) definieert.A tool (40) for handling a string (1) according to any one of claims 1-8, characterized in that it comprises a clamping area, which clamping area in a first position, which first position for clamping the string ( 1), comprises at least one inwardly projecting third rib, which third rib 5 partially defines a recess (43) for receiving at least a portion of a first rib (3). 24. Hulpmiddel (40) volgens conclusie 23, met het kenmerk, dat de derde rib een derde asymmetrisch dwarsdoorsnede 10 heeft.An aid (40) according to claim 23, characterized in that the third rib has a third asymmetrical cross-section. 25. Hulpmiddel (40) volgens conclusie 23 of 24, met het kenmerk, dat de derde rib (42) ringvormig is en daarbij een tweede snaarontvangend kanaal vormt. 15Aid (40) according to claim 23 or 24, characterized in that the third rib (42) is annular and thereby forms a second string-receiving channel. 15 26. Hulpmiddel (40) volgens één der conclusies 23-25, met het kenmerk, dat het een pluraliteit aan derde ribben omvat waarbij de ribben op vergelijkbare wijze zijn georiënteerd en gelijkmatig in een lengterichting van 20 het tweede kanaal zijn gepositioneerd.An aid (40) according to any one of claims 23-25, characterized in that it comprises a plurality of third ribs wherein the ribs are oriented in a similar manner and are uniformly positioned in a longitudinal direction of the second channel. 27. Hulpmiddel (40) volgens één der conclusies 23-26, met het kenmerk, dat de derde rib (42) stijf is.An aid (40) according to any one of claims 23-26, characterized in that the third rib (42) is rigid. 28. Werkwijze voor het besnaren van een racket met het kenmerk, dat deze omvat: - het voorzien in een racket omvattende ten minste één snaarontvangende structuur voor het ontvangen en 30 afsteunen van een snaar.28. Method for stringing a racket, characterized in that it comprises: - providing a racket comprising at least one string-receiving structure for receiving and supporting a string. 29. Werkwijze volgens conclusie 28, met het kenmerk, dat deze verder omvat: - het voorzien in een voorgeweven net omvattende ten 5 minste één snaar volgens één der conclusies 1-8.29. A method according to claim 28, characterized in that it further comprises: - providing a pre-woven net comprising at least one string according to any one of claims 1-8. 30. Werkwijze volgens conclusie 28 of 29, met het kenmerk, dat deze verder omvat: 10. het verbinden van een eerste uiteinde van de snaar (1) , - het door de snaarontvangende structuur (18) trekken van een tweede uiteinde van de snaar (1), en - het uitoefenen en meten van de trekkracht. 15 1037695Method according to claim 28 or 29, characterized in that it further comprises: 10. connecting a first end of the string (1), - pulling a second end of the string through the string-receiving structure (18) (1), and - applying and measuring the pulling force. 15 1037695
NL1037695A 2010-02-08 2010-02-08 String for a racket, pre-woven web and a racket comprising such a string, a string receiving structure, and a tool for handling such a string, assemblies thereof, and a method for stringing a racket. NL1037695C2 (en)

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NL1037695A NL1037695C2 (en) 2010-02-08 2010-02-08 String for a racket, pre-woven web and a racket comprising such a string, a string receiving structure, and a tool for handling such a string, assemblies thereof, and a method for stringing a racket.

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NL1037695 2010-02-08
NL1037695A NL1037695C2 (en) 2010-02-08 2010-02-08 String for a racket, pre-woven web and a racket comprising such a string, a string receiving structure, and a tool for handling such a string, assemblies thereof, and a method for stringing a racket.

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