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WO2018124966A1 - Appareil à ouvrir les huîtres - Google Patents

Appareil à ouvrir les huîtres Download PDF

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Publication number
WO2018124966A1
WO2018124966A1 PCT/SG2017/050202 SG2017050202W WO2018124966A1 WO 2018124966 A1 WO2018124966 A1 WO 2018124966A1 SG 2017050202 W SG2017050202 W SG 2017050202W WO 2018124966 A1 WO2018124966 A1 WO 2018124966A1
Authority
WO
WIPO (PCT)
Prior art keywords
oyster
stanchion
support channel
connecting rod
shucking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SG2017/050202
Other languages
English (en)
Inventor
Yam Song CHEW
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2018124966A1 publication Critical patent/WO2018124966A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/06—Combined or separable sets of table-service utensils; Oyster knives with openers; Fish servers with means for removing bones
    • A47G21/061—Oyster knives with openers; Shellfish openers
    • A47G21/062—Oyster splitters working by forcing a knife or the like between shells
    • A47G21/063—Separate oyster supports therefor
    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C29/00—Processing shellfish or bivalves, e.g. oysters, lobsters; Devices therefor, e.g. claw locks, claw crushers, grading devices; Processing lines
    • A22C29/04—Processing bivalves, e.g. oysters
    • A22C29/046—Opening or shucking bivalves
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/06—Combined or separable sets of table-service utensils; Oyster knives with openers; Fish servers with means for removing bones
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/06—Combined or separable sets of table-service utensils; Oyster knives with openers; Fish servers with means for removing bones
    • A47G21/061—Oyster knives with openers; Shellfish openers
    • A47G21/062—Oyster splitters working by forcing a knife or the like between shells
    • A47G21/065—Hand tools, e.g. shucking knives

Definitions

  • the present invention relates to an apparatus for opening live oysters in a safe and expeditious manner.
  • the most common apparatus for opening live oysters is an oyster knife.
  • the blade of the oyster knife is inserted between the two half-shells somewhere near the hinge or beak of an oyster. After the blade is inserted into the oyster, the knife is moved in a twisting motion towards the hinge or beak to partially open the two half-shells; the knife is then manipulated to cut the adductor muscle, which connect the upper half-shell to the lower half-shell. After removing the upper half-shell, the adductor muscle attached to the lower half-shell is cut whilst keeping the lower half-shell in a horizontal manner to prevent the oyster liquor from spilling. Openi ng a live oyster requires dexterously welding of the oyster knife and good hands-eyes coordination. When opening large numbers of live oysters in a routine food preparation facility, such a task becomes physically taxing and laborious; therefore, there is a need to provide a new and more efficient apparatus to open live oysters in a safe and expeditious manner.
  • US Patent No. 5,482,500 issued to Boettner et al.
  • an oyster opener having a base plate, a support channel for receiving and supporting an oyster, and a lever with an engaging tip to pivotly crack and open the oyster.
  • US Patent No. 6,785,967 issued to Allievi, provides a handheld oyster opener; the oyster opener has two cooperating pivot members. The lower pivot member is curved and toothed, whi lst the upper member has a wedge. To open an oyster, the oyster is clamped between the lower and upper pivot members and the wedge is forced to open the oyster shells.
  • 7,785,176 issued to Le, provides a portable oyster opener; the opener is used to manually force open the oyster shells by a down stroke of a reci procati ng pi unger.
  • the present invention seeks to provide a new oyster opening apparatus that is operable in a safe, efficient and expeditious manner.
  • This apparatus is adjustable and can be used to open oysters that come i n a wi de range of sizes and shapes.
  • the present invention provides an oyster opening apparatus.
  • the apparatus comprises: a support channel; a stanchion connected to the support channel to form a base of the oyster opening apparatus, wherein an open slot is formed at a top end of the stanchion on a face that is contiguous with the support channel; a hinge rod disposed transversely to the open slot on the stanchion; a connecting rod disposed to engage loosely with the hinge rod, so that the connecting rod is pivotable about the stanchion in a rocking manner, with a longitudi nal axis of the connecting rod substantially along a length of the support channel; and a lever having an upper lobe and a lower lobe at a proximal end, and a handle at a distal end, with the upper lobe being pivoted to the connecting rod and a shucking member being connected at the lower lobe.
  • the shucking member When an oyster is placed on the support channel and in contact with the stanchion, the shucking member is operable to contact an indentation near the hinge of the oyster and when a force is applied onto the handle, the shucking member progresses to direct an oblique and upward force to pry open the oyster.
  • the present invention provides a method for opening an oyster.
  • T he method comprises: supporting the oyster stably on a support channel and in contact with a stanchion; applying a force on a lever and transmitting the force to an i ndentati on near the hi nge of the oyster vi a a shucki ng member; connecti ng the I ever to the stanchion in an articulate manner through a connecti ng rod; and allowing the shucking member to slide on a lower half-shell of the oyster and directing the force at an oblique and upward manner in order to pry open the oyster.
  • T he method further comprises removing the oyster from the support channel, and cutting the adductor muscle at least at the lower half-shell to free the flesh of the oyster or loosening the flesh of the oyster from the adductor muscle.
  • FIG. 1A illustrates an oyster opening apparatus according to an embodiment of the present invention
  • FIGs. 1 B-1 C illustrate a support member and a stanchion of the apparatus shown in FIG. 1A;
  • FIG . 2A ill ustrates an oyster openi ng apparatus accordi ng to a vari ati on of the above embodiment; and FIGs. 2B-2C illustrate plan views of stanchions according to two variations; and
  • FIGs. 3A-3D illustrate progressive opening of a live oyster using the above apparatus.
  • FIG. 1A shows an oyster opening apparatus 100 according to an embodiment of the present invention.
  • the oyster opening apparatus 100 includes a support channel 110, an upright stanchion 120, a connecting rod 140, a link bar 160, a lever 170 and a shucking member 190.
  • the support channel 110 is connected to the stanchion 120, preferably fixedly by weldi ng, or removeably by screws.
  • the connecting rod 140 is rectangular in cross section, of a uniform thickness and arcuate in shape.
  • a notch 144 on the connecting rod 140 is loosely engaged on a hinge rod 130 located on the stanchion 120, whilst a proximal end of the connecting rod 140 is pivoted at P1 to the link bar 160.
  • the opposite end of the li nk bar 160 is pivoted at P2 to a first lobe 172 on the lever 170.
  • the lever 170 terminates with a handle 180 at a free end, whilst the shucking member 190 projects from a second lobe 174 on the lever 170 towards an oyster 10, which oyster is disposed on the support channel 110.
  • the oyster openi ng apparatus 100 i s pi aced on a stabl e surface, such as a table top, with a user' s hand to actuate the I ever 170 as i ndi cated by a force F 1 and preferably with another hand to stabilize the connecting rod 140 as indicated by another force F2.
  • the two half-shells of the live oyster remain open, and a user would then remove the oyster from the support channel 110 and manually cut the adductor muscle with a knife to loosen the flesh of the oyster for consumption or processing.
  • the force F1 on the handle 180 can be further applied until the adductor muscle is torn, so that the two half-shells are loosely connected.
  • a user can then remove the oyster from the support channel and manually cut the adductor muscle at the lower half-shell with a knife to loosen the flesh of the oyster or simply loosen the flesh from the lower half-shell.
  • the oyster opening apparatus 100 When opening an oyster with this apparatus 100, a user does not need to hold the oyster with a hand.
  • the oyster opening apparatus 100 thus provides a safe and efficient tool for openi ng live oysters; in addition, this apparatus 100 makes opening of oysters simple and expeditious, even to a novice.
  • the support channel 110 and the stanchion 120 are formed from sheet metals, such as stainless steel or aluminium; the oyster opening apparatus 100 is thus lightweight and portable, yet sturdy and stable.
  • these sheet metal parts can be joined by known means, such as by welding or with screws.
  • FIG. 1 B shows the support channel 110 is formed with a substantially M-shaped cross section, ie. with a centre V- or U-shaped depression 112 to support an oyster stably, without a user requiring a hand to hold the oyster 10 during operation.
  • an open slot 114 is provided at an end of the V -shaped depression 112 which would be contiguous with the stanchion 120.
  • the slot 114 prevents water, liquid from the oyster or any small broken pieces from the oyster shells from collecti ng on the support channel.
  • the longitudinal free edges 116 at the base of the support channel 110 are formed inward, so that the contact faces at the base are flat and non-scratching onto a support surface; in addition, polymeric or rubber materials may be disposed onto the contact faces to provide non-sl i p contact with the support surface.
  • FIG. 1 C shows the stanchion 120 is formed into a truncated V-shaped upright structure with two slant sidewal Is 121 a, 121 b. T he bottom of the slant sidewal Is 121a, 121 b define a base, which is slightly wider than a width at a top end. As seen in FIG. 1 C, a face 121 of the stanchion that would be contiguous with the support channel 110 has a centre slot 122, which is open from the top end. A width of the slot 122 is dimensioned to loosely receive the thickness of the connecting rod 140.
  • the hinge rod 130 disposed transversely to the slot 122, is fixedly connected to the sidewalls, so that the open notches 144 on the connecting rod 140 can rock loosely on the hi nge rod 130 during operation of the apparatus 100.
  • the loose connection between the connecti ng rod 140 and the stanchion 120 allows the user to adjust the connecting rod on the stanchion according to a size of the oyster; at the same time, the loose connection between the notches 144 and the hinge rod 130 allows the user to tilt the connecting rod/handle with some lateral freedom of motion; this li mited lateral freedom of motion is useful because the shapes of the oysters are often irregular. Motions of shucking oysters will be described with reference to FIGs. 3A-3D.
  • the connecting rod 140 is preferably arcuate, it is not so restricted; the connecting rod 140 can also be general ly straight i n shape.
  • an aperture 124 on the stanchion face 121 is preferably formed at a distance below the open slot 122.
  • the aperture 124 is at a level above the V-shaped depression 112 of the support channel 110.
  • a width of the aperture 124 tapers to each of its two ends.
  • a stopper plate 125 i s provi ded above the aperture 124, preferably at the end of the open si ot 122. W hen i n use, the stopper plate 125 provides an alternative third point of contact for the oyster to be held stably on the apparatus 100; this is seen more clearly in FIG. 2A.
  • the posterior end is simply placed in contact with the stanchion face 121.
  • the lever 170 has two lobes, an upper, first lobe 172 and a lower, second lobe 174 at a proximal end, with a distal end terminating at the handle 180.
  • the link bar 160 is pivotedly connected at the upper first lobe 172 whilst the shucking member 190 is welded to the lower second lobe 174 such that the shucking member 190 is directed to contact the oyster 10 disposed on the support channel 110.
  • the link bar 160 provides a flexible or articulate connection between the lever 170 and the connecting rod 140; this flexible connection allows additional degrees of freedom of motion in directing the shucking member 190 at an indentation near the hinge of the oyster.
  • the handle 180 includes a pair of members made of wood or plastic being riveted to the lever 170 to provide the user with a more comfortable grip at the handle.
  • the shucking member 190 has a pointed end 192, preferably formed with chisel -shaped edges; preferably, the chisel -shaped edges are faci ng upwards, but they are not limited by this orientation of the shucking member 190.
  • the pointed end 192 of the shucking member 190 can also be pointed like that of a pencil, although a thick pointed pencil end may cause edges of the oyster shells to crack.
  • FIG. 2A shows an oyster opening apparatus 100a according to another embodiment
  • the oyster opening apparatus 100a is similar to the above apparatus 100, except that the link member 160 is now dispensed with. Without the link member 160, the rocking or seesaw movements of the connecting rod 140 on the hinge rod 130 may go through larger amplitudes; the degrees of movements of the shucking member 190 may also be reduced but the apparatus 100a remains useful and efficient for opening oysters.
  • FIGs. 3A-3D illustrate progressive opening of an oyster 10 using the above oyster opening apparatus 100, 100a. As described above, the oyster is supported or contacts the apparatus 100, 100a at substantially three poi nts of contact. In FIG.
  • the shucking member 190 is initially di rected to the indentation near the hinge of an oyster 10, where the hinge is at an anterior end of the oyster.
  • a force F1 is applied onto the handle 180, the pivot P1 and/or P2 at the connecting rod 140 or link bar 160 tend to be displaced upward, resulting in the shucking member 190 being moved to the right and upward, as seen in FIG. 3B.
  • Further application of force F1 on the handle 180 causes a lower side of the shucking member 190 to slide on the lower half-shell at an angle, alphal; as a result the shucking member 190 becomes positively inserted into the indentation near the hi nge, and the two half-shells become slightly pried open.
  • T he oyster 10 is then removed from the support channel 110 and a knife can then be easily inserted into the oyster to cut the adductor muscle near the upper half-shell before the upper half-shell is removed; the adductor muscle connected to the lower half shell is then cut to loosen the flesh of the oyster from the lower half-shell; the lower half-shell, which is generally cup-shaped, is preferably held in a substantially horizontal manner to prevent the liquour of the oyster from spilling.
  • the force F1 is applied continuously until the adductor muscle becomes torn, so that the upper half shell can be easily removed; the adductor muscle at the lower half- shell may then be further cut with a knife, when necessary, or a knife is used to simply loosen the flesh of the oyster from the adductor muscle.
  • a round hinge bar 130a may be fixed onto a rear of the stanchion face 121 at the end of the slot 122 by welding, instead of connecting it to the sidewalls, as seen in FIG. 2B.
  • the stanchion 120 is bent about the vertical axis (Z-axis as indicated in FIG. 1 C), of course before fixing a stopper plate 125a, so that the stanchion face 121c is slightly V-shaped, as shown in FIG. 2C.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Processing Of Meat And Fish (AREA)

Abstract

La présente invention concerne un appareil à ouvrir les huîtres (100, 100a). L'appareil comporte un canal support (110) relié à un étançon (120). Une tige de liaison (140) munie d'encoches (144) sur un bord inférieur est reliée de façon réglable à l'étançon d'une manière à pouvoir basculer. Un levier (170) est pivoté au niveau d'un lobe supérieur (172) à une extrémité de la tige de liaison tandis qu'un écailleur (190) est relié à un lobe inférieur (174). Une poignée (180) à une extrémité libre du levier permet à un utilisateur d'appliquer de manière contrôlée une force (F1) et de transmettre la force à l'écailleur (190) pour ouvrir l'huître (10) disposée sur le canal support. Une dépression (114) sur le canal support réalise deux points de contact sur l'huître, tandis qu'une ouverture (124), une plaque de butée (125) ou une face (121) sur l'étançon réalise un troisième point de contact pour positionner l'huître de façon stable.
PCT/SG2017/050202 2016-12-30 2017-04-07 Appareil à ouvrir les huîtres Ceased WO2018124966A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG10201610971X 2016-12-30
SG10201610971XA SG10201610971XA (en) 2016-12-30 2016-12-30 Oyster Opening Apparatus

Publications (1)

Publication Number Publication Date
WO2018124966A1 true WO2018124966A1 (fr) 2018-07-05

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Family Applications (1)

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PCT/SG2017/050202 Ceased WO2018124966A1 (fr) 2016-12-30 2017-04-07 Appareil à ouvrir les huîtres

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SG (1) SG10201610971XA (fr)
WO (1) WO2018124966A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110179308A (zh) * 2019-05-06 2019-08-30 北部湾大学 一种便携式牡蛎开壳装置
CN111248251A (zh) * 2020-03-03 2020-06-09 江苏海洋大学 一种手握式万能双壳贝类开壳器
EP3888862A1 (fr) * 2020-04-01 2021-10-06 Michael Schwerin Dispositif d'actionnement destiné à l'exercice sans contact des processus d'actionnement
WO2022035589A1 (fr) 2020-08-11 2022-02-17 EAST HAMPTON SHUCKER COMPANY, Inc. Appareil et procédé de serrage pour l'écaillage d'huîtres

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US956049A (en) * 1909-08-07 1910-04-26 Alfred F White Diamond Oyster-opener.
FR1101117A (fr) * 1954-05-24 1955-09-28 Dispositif pour ouvrir les huîtres ou autres coquillages
US4059870A (en) * 1976-08-26 1977-11-29 Amcar Industries, Ltd. Oyster board
FR2489127A1 (fr) * 1980-08-26 1982-03-05 Marquis Joseph Dispositif d'ouverture de mollusques fixable sur un support
EP1080674A1 (fr) * 1999-09-02 2001-03-07 Serotti & Ghidini S.n.c. Appareil pour ouvrir les huitres

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US956049A (en) * 1909-08-07 1910-04-26 Alfred F White Diamond Oyster-opener.
FR1101117A (fr) * 1954-05-24 1955-09-28 Dispositif pour ouvrir les huîtres ou autres coquillages
US4059870A (en) * 1976-08-26 1977-11-29 Amcar Industries, Ltd. Oyster board
FR2489127A1 (fr) * 1980-08-26 1982-03-05 Marquis Joseph Dispositif d'ouverture de mollusques fixable sur un support
EP1080674A1 (fr) * 1999-09-02 2001-03-07 Serotti & Ghidini S.n.c. Appareil pour ouvrir les huitres

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110179308A (zh) * 2019-05-06 2019-08-30 北部湾大学 一种便携式牡蛎开壳装置
CN111248251A (zh) * 2020-03-03 2020-06-09 江苏海洋大学 一种手握式万能双壳贝类开壳器
CN111248251B (zh) * 2020-03-03 2021-04-27 江苏海洋大学 一种手握式万能双壳贝类开壳器
EP3888862A1 (fr) * 2020-04-01 2021-10-06 Michael Schwerin Dispositif d'actionnement destiné à l'exercice sans contact des processus d'actionnement
WO2022035589A1 (fr) 2020-08-11 2022-02-17 EAST HAMPTON SHUCKER COMPANY, Inc. Appareil et procédé de serrage pour l'écaillage d'huîtres
US11672256B2 (en) 2020-08-11 2023-06-13 EAST HAMPTON SHUCKER COMPANY, Inc. Oyster shucking clamp apparatus and method
JP2023537601A (ja) * 2020-08-11 2023-09-04 イースト ハンプトン シュッカー カンパニー、インコーポレイテッド カキ殻剥き用挟持装置及びカキ殻剥き方法

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