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US3175503A - Segmentary sealing blades for rotary engines - Google Patents

Segmentary sealing blades for rotary engines Download PDF

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US3175503A
US3175503A US179931A US17993162A US3175503A US 3175503 A US3175503 A US 3175503A US 179931 A US179931 A US 179931A US 17993162 A US17993162 A US 17993162A US 3175503 A US3175503 A US 3175503A
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rotor
stator
sealing
elements
recesses
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US179931A
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Peras Lucien
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Renault SA
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Renault SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/02—Radially-movable sealings for working fluids
    • F01C19/04—Radially-movable sealings for working fluids of rigid material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/10—Sealings for working fluids between radially and axially movable parts

Definitions

  • This invention relates to blades adapted to seal the joint between the component elements of rotary engines which are subjected to the compression and expansion of the gases accomplishing their power stroke in working chambers.
  • FIG. 4 illustrates in fragmentary section a rotary engine wherein the generatrices of rotor 1 are not deformed and wherein a single blade can provide the fluid-tightness due to its eflicient engagement with the rotor surface.
  • 1 is the rotor, 2 the stator, 3 and 4 the end flanges, 5 the joint and 6 the blade spring.
  • the sealing blades according to the present invention are segmented in order to accommodate as fully as possible the generatrices of the rotor or cases of rotary engines.
  • the blade may be segmented as simply as possible, that is, into two elements for very narrow rotors, but the higher the number of segments, the better the result, and this number is unlimited except for the complication arising from an excessive number of elements.
  • FIGURE 1 is a section taken across a rotary engin equipped with segmental blades
  • FIGURE 2 is a fragmentary section taken upon the line IIII of FIG. 1;
  • FIGURE 3 is a fragmentary section showing on a larger scale a detail of the cross section of FIG. 1;
  • FIGURE 4 is a front view showing a unitary blade disposed between the rotor and stator of the rotary engine
  • FIGURES 5 to 13 are similar views showing different forms of embodiment of segmental joints fitted in corresponding slots of rotary engines.
  • FIGS. 1, 2 and 3 areshown only to remind the structure of a rotary engine.
  • the four-lobed rotor 1 revolves within a stator 2 formed with five chambers and provided with side flanges or plates.
  • the stator 2 comprises in slots or grooves 7 sealing blades 5 adapted to isolate the chambers from one another by bearing against the rotor 1.
  • springs 6 fitted in the bottom of grooves 7 urge the blades against the rotor.
  • thestator has an inner wall which encloses a chamber Within which the rotor can rotate.
  • the rotor and stator have parallel longitudinal axes.
  • the stator inner wall specifically defines a plurality of concave recesses 40 adjoining each other at apices 41.
  • the rotor has a peripheral surface which defines in radial cross-section a plurality of convex lobes 42 whose convexity substantially corresponds to the concavity of the recesses 40.
  • the number of lobes 42 is one less than the number of recesses 40.
  • Each apex 41 comprises a groove 7 within which is located the sealing meanscomprising the aforementioned blades 5 and resilient biasing means 6.
  • FIG. 5 illustrates a rotor 1 of which the shape can be altered mainly by its expansion due to the gaseous combustion in the working chambers.
  • each sealing blade is divided into a plurality of blade segments resiliently urged by separate springs. These segments position themselves automatically along tangents to the curves of the rotor generatrices moving past the blade segments inserted in a stator slot or groove.
  • FIG. 5 shows clearly the improvement resulting from this arrangement if there is considered the chord a, the deformed generatrix b and the tangents 8, 9 and 10 to this generatrix.
  • FIG. 6 shows segments assumed to move parallel to their position in the cold state. In this case the advantage resulting from the segmental blade disposal is moderate for it is clear that the blade should be divided into a greater number of segments, as shown in FIG. 7.
  • These :segrnental elements 11, in the example illustrated in FIG. 7, are ten in number, each element being provided with a separate spring 12 engaging a recess formed in each segment 11 and bearing against the bottom 13 of the slot 14 formed in stator 2.
  • FIG. 8 shows an embodiment comprising a great number of segmental elements 15, a single-coil spring 16 of generally flattened cross-section ensuring the desired resilient engagement with the rotor generatrices.
  • the reference numerals 17, 17' and 18 designate in cross-sections typical examples of the coil-spring cross-sectional shape, the first two examples showing flattened springs and the third example a circular spring.
  • FIG. 9 is another illustration of a deformable seg mental blade wherein the segments 19 are of inverted T configuration and the springs 20 react against the side arms of each T and against the bottom of the stator groove.
  • FIG. 10 is a view similar to FIG. 9 and shows a modified embodiment wherein adjacent springs are linked by a ring 21.
  • FIG. 11 shows another form of embodiment comprising a plurality of segments constituting a deformable sealing blade wherein each segment 22, 22 is formed with a notch 23'on its upper face, each notch 23 being engaged by a correspondingly shaped portion of a single spring 24 consisting of a wire or a flat strip.
  • FIG. 12 illustrates another embodiment of a series of interconnected segments wherein each segment 25 is formed with two notches 26, 27, a spring 28 of adequate configuration engaging the adjacent notches of two successive' segments.
  • FIG. 13 is another embodiment wherein the segments 29 also of inverted T configuration are each urged against the rotor by two coil springs 30, 31 disposed on either side of the central member of the T and adapted to engage a correspondingly notched counter-plate 32 acting on the one hand as a spring-receiving member and on the other hand as a stop to limit the radial movement of the segments by reserving a predetermined clearance.
  • the counter-plate 32' and sealing elements 29 have corresponding abutment portions 43 and 44 which serve to prevent further outward radial movement of the blades 29 afterthe springs. 30 have been compressed to a certain point.
  • this counter-plate 32 fillsthe maximum volume of the blade-receiving groove, which maybe advanfageous for reducing; dead space and thus prevent a non negligible fraction of gas' from' circulating along the groove.
  • the bearing of this invention is not limited by the specific forms of embodiment described with reference-to, the attached figures but extends to any otherembodiment consistent with the spirit and scope of the patent, which resides in dividing a sealing blade into segments either free or interconnected by spring links in order to ensure a satisfactory and'reliab'le fluid-tightness alongv the def formed generatrices of the rotor, or along the side flanges or plates of the stator in rotary engines.
  • a rotary engine comprising a stator having an inner wall which defines a hollow compartment, said wall defining in radial cross-section a plurality of angularly adgroove, said spring comprising straight portions which abut said stator and curved portions between said straight tudinal axis being substantially transverse to the radial line of travel of said sealing elements, said coil. spring being located between the bottom of said groove and the rear face of said sealing elements with its helical coils being transversely compre'ssedb'etween said sealing elements. and the bottom of said groove.
  • each of said sealing elements comprises two longitudinally spacedv recesses, said biasing.
  • means in each of said grooves comprising a pl'uralitygof flat-type springs having an arch joining concave recesses and an inwardly protruding apex at each point of juncture between t-wo adjoining recesses, a rotor mounted within said compartment along'a longitudinalaxis which is parallel to the longitudinal axis of saidstator, said rotor having a peripheral surface which defines in radial cross-section a plurality of convex lobes, each lobe being curved substantially to the same curvature as eachof said recesses, said stator comprising a longitudinal groove at each of said apexes, 'a sealing means in each of said grooves, each said sealing means comprising a plurality of separate sealing elements longitudi- 'nally aligned and abutting each other on adjacent radial faces, and biasing
  • sealing elements each have fiat front. faces which contact said rotor periphery, said sealing elements eaelr having a recess int-heir rear faces, saidl'biasing means being received in each of saidrecesses. 5 p 1 5.
  • said biasing means in each of said grooves is a single blade-type spring extending substantially the full length of its associated portion and opposite end portions, said arch portion abutting, the bottom of said groove and the opposite end portions of any one spring, being received'in adjacent ones of said' recesses in dilferent ones of said sealing, elements.
  • each of-said sealing elements has an inverted T-shape and each of said spring members are blade-type springs, each of'said bladetype springs abutting against opposite-sides of the horizontal leg, of the T, with the vertical leg ofrthe T fitting between'opposite ends of saidspring.
  • a rotary engine comprisingv a stator and a rotor rotatable within said stator, said stator comprising an inner wall and said rotor comprising an outer peripheral surface, saidrotor and stator defining between said wall and said surface a plurality of'separatesealed chambers, each chamber extending.
  • sealingv means comprising longitudinal grooves circumferentially spaced apart in said stator, a plurality of separate sealing elements in each groove, said elements being longitudinally aligned and abutting one another along radial faces thereof, each of said elements being separately slidable in a radial direction in said groove, resilient biasing means separately urging each of said elements inwardly towards said rotor, said elements sealing.- ly contacting. said rotor peripheral surface.
  • said biasing means comprises a blade-type spring for each of said sealing elements and wherein. said sealing elements are in the form of an inverted T with each said spring, bearing against opposite'horizontal arms of one of said elements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

L. PERAS March 30, 1965 SEGMENTARY SEALING BLADES FOR ROTARY ENGINES 5 Sheets$heet 1 Filed March 15, 1962 FIG.2
/ izwm a r 3,175,503 SEGMENTARY SEALING BLADES FOR ROTARY ENGINES Lucien Pras, Billancourt, France, assignor to Regie Nationale des Usiues Renault, Billancourt, France Filed Mar. 15, 1962, Ser. No. 179,931 Claims priority, application France, Mar. 31,1961, 857,549, Patent 1,293,169 10 Claims. (Cl. 103-130) This invention relates to blades adapted to seal the joint between the component elements of rotary engines which are subjected to the compression and expansion of the gases accomplishing their power stroke in working chambers.
3,175,503 PatentedMar. 30, 19,65
FIG. 4 illustrates in fragmentary section a rotary engine wherein the generatrices of rotor 1 are not deformed and wherein a single blade can provide the fluid-tightness due to its eflicient engagement with the rotor surface. In this figure 1 is the rotor, 2 the stator, 3 and 4 the end flanges, 5 the joint and 6 the blade spring.
It has already been proposed to use one-piece deformable sealing blades having properties enabling them to accommodate the deformations of the aforesaid component elements.
The sealing blades according to the present invention are segmented in order to accommodate as fully as possible the generatrices of the rotor or cases of rotary engines.
The blade may be segmented as simply as possible, that is, into two elements for very narrow rotors, but the higher the number of segments, the better the result, and this number is unlimited except for the complication arising from an excessive number of elements.
The invention will be described hereinafter with reference to the attached drawing wherein:
FIGURE 1 is a section taken across a rotary engin equipped with segmental blades;
FIGURE 2 is a fragmentary section taken upon the line IIII of FIG. 1;
FIGURE 3 is a fragmentary section showing on a larger scale a detail of the cross section of FIG. 1;
FIGURE 4 is a front view showing a unitary blade disposed between the rotor and stator of the rotary engine, and
FIGURES 5 to 13 are similar views showing different forms of embodiment of segmental joints fitted in corresponding slots of rotary engines.
In the drawings, FIGS. 1, 2 and 3 areshown only to remind the structure of a rotary engine. In the example illustrated the four-lobed rotor 1 revolves within a stator 2 formed with five chambers and provided with side flanges or plates. The stator 2 comprises in slots or grooves 7 sealing blades 5 adapted to isolate the chambers from one another by bearing against the rotor 1. To this end, springs 6 fitted in the bottom of grooves 7 urge the blades against the rotor. As is quite obvious from FIGURE 1, thestator has an inner wall which encloses a chamber Within which the rotor can rotate. As is well known and as is also seen from FIGURE 1, the rotor and stator have parallel longitudinal axes. The stator inner wall specifically defines a plurality of concave recesses 40 adjoining each other at apices 41. The rotor has a peripheral surface which defines in radial cross-section a plurality of convex lobes 42 whose convexity substantially corresponds to the concavity of the recesses 40. As is also seen in FIG- URE 1, the number of lobes 42 is one less than the number of recesses 40. Each apex 41 comprises a groove 7 within which is located the sealing meanscomprising the aforementioned blades 5 and resilient biasing means 6.
It will be seen from FIGURE 1, that as the rotor rotates, its peripheral surface will slide past and against each of the sealing blades or elements 5. This continual contact between the rotor periphery and the blades 5 permits effective separation and sealing of the adjacent compartments formed between the rotor and stator wall.
FIG. 5 illustrates a rotor 1 of which the shape can be altered mainly by its expansion due to the gaseous combustion in the working chambers.
According to this invention, each sealing blade is divided into a plurality of blade segments resiliently urged by separate springs. These segments position themselves automatically along tangents to the curves of the rotor generatrices moving past the blade segments inserted in a stator slot or groove. FIG. 5 shows clearly the improvement resulting from this arrangement if there is considered the chord a, the deformed generatrix b and the tangents 8, 9 and 10 to this generatrix.
FIG. 6 shows segments assumed to move parallel to their position in the cold state. In this case the advantage resulting from the segmental blade disposal is moderate for it is clear that the blade should be divided into a greater number of segments, as shown in FIG. 7. These :segrnental elements 11, in the example illustrated in FIG. 7, are ten in number, each element being provided with a separate spring 12 engaging a recess formed in each segment 11 and bearing against the bottom 13 of the slot 14 formed in stator 2.
FIG. 8 shows an embodiment comprising a great number of segmental elements 15, a single-coil spring 16 of generally flattened cross-section ensuring the desired resilient engagement with the rotor generatrices. The reference numerals 17, 17' and 18 designate in cross-sections typical examples of the coil-spring cross-sectional shape, the first two examples showing flattened springs and the third example a circular spring.
FIG. 9 is another illustration of a deformable seg mental blade wherein the segments 19 are of inverted T configuration and the springs 20 react against the side arms of each T and against the bottom of the stator groove.
It may beadvantageous to provide a series of segments interconnected through flexible, spring-like members to facilitate the mass-production, storing and checking operations. The length of the segmental blade can easily be ascertained after assembly to check the axial plays between the assembled blade segments and the side flanges or plates.
FIG. 10 is a view similar to FIG. 9 and shows a modified embodiment wherein adjacent springs are linked by a ring 21.
FIG. 11 shows another form of embodiment comprising a plurality of segments constituting a deformable sealing blade wherein each segment 22, 22 is formed with a notch 23'on its upper face, each notch 23 being engaged by a correspondingly shaped portion of a single spring 24 consisting of a wire or a flat strip.
FIG. 12 illustrates another embodiment of a series of interconnected segments wherein each segment 25 is formed with two notches 26, 27, a spring 28 of adequate configuration engaging the adjacent notches of two successive' segments. Y
FIG. 13 is another embodiment wherein the segments 29 also of inverted T configuration are each urged against the rotor by two coil springs 30, 31 disposed on either side of the central member of the T and adapted to engage a correspondingly notched counter-plate 32 acting on the one hand as a spring-receiving member and on the other hand as a stop to limit the radial movement of the segments by reserving a predetermined clearance.
As will be seen in FIGURE 13, the counter-plate 32' and sealing elements 29 have corresponding abutment portions 43 and 44 which serve to prevent further outward radial movement of the blades 29 afterthe springs. 30 have been compressed to a certain point. i
Moreover, this counter-plate 32fillsthe maximum volume of the blade-receiving groove, which maybe advanfageous for reducing; dead space and thus prevent a non negligible fraction of gas' from' circulating along the groove. p 7 V The bearing of this invention is not limited by the specific forms of embodiment described with reference-to, the attached figures but extends to any otherembodiment consistent with the spirit and scope of the patent, which resides in dividing a sealing blade into segments either free or interconnected by spring links in order to ensure a satisfactory and'reliab'le fluid-tightness alongv the def formed generatrices of the rotor, or along the side flanges or plates of the stator in rotary engines.
I claim? 1". A rotary engine comprising a stator having an inner wall which defines a hollow compartment, said wall defining in radial cross-section a plurality of angularly adgroove, said spring comprising straight portions which abut said stator and curved portions between said straight tudinal axis being substantially transverse to the radial line of travel of said sealing elements, said coil. spring being located between the bottom of said groove and the rear face of said sealing elements with its helical coils being transversely compre'ssedb'etween said sealing elements. and the bottom of said groove.
7.v The engine of' claim 4, wherein the rear face of each of said sealing elements comprises two longitudinally spacedv recesses, said biasing. means in each of said grooves comprising a pl'uralitygof flat-type springs having an arch joining concave recesses and an inwardly protruding apex at each point of juncture between t-wo adjoining recesses, a rotor mounted within said compartment along'a longitudinalaxis which is parallel to the longitudinal axis of saidstator, said rotor having a peripheral surface which defines in radial cross-section a plurality of convex lobes, each lobe being curved substantially to the same curvature as eachof said recesses, said stator comprising a longitudinal groove at each of said apexes, 'a sealing means in each of said grooves, each said sealing means comprising a plurality of separate sealing elements longitudi- 'nally aligned and abutting each other on adjacent radial faces, and biasing means in said grooves separately urging each of said element-s radially inwardly in sealing contact against the peripheral su'rface'of-said rotor, said rotor being rotatable about its longitudinal axis with'its periph eral surface slidingpast each of said sealing elements, said peripheral surface of said rotor defining with said stator inner wall longitudinally extending chambers which i are sealing ly'separated from each other by said sealing and said sealing elements, said plate member comprising longitudinally aligned notches, saidspring members being coil springs and each said coil spring fitting in one of said notches and being compressed between said plate member and'said sealing elements, said plate member and said sealing elements comprising respective abutment portions radially aligned with" each other and radially spaced" apart, said abutment portions serving to limit the outward radial movementof said sealing elements by abutting: against each other. when the spring elements'are V compressed beyond" av certain degree. 7
.4. The engine of claim 1, wherein said: sealing elements each have fiat front. faces which contact said rotor periphery, said sealing elements eaelr having a recess int-heir rear faces, saidl'biasing means being received in each of saidrecesses. 5 p 1 5.. The engine of claim 4, wherein said biasing means in each of said grooves is a single blade-type spring extending substantially the full length of its associated portion and opposite end portions, said arch portion abutting, the bottom of said groove and the opposite end portions of any one spring, being received'in adjacent ones of said' recesses in dilferent ones of said sealing, elements.
8. The engine of claim 2, wherein each of-said sealing elements has an inverted T-shape and each of said spring members are blade-type springs, each of'said bladetype springs abutting against opposite-sides of the horizontal leg, of the T, with the vertical leg ofrthe T fitting between'opposite ends of saidspring.
9; A rotary engine comprisingv a stator and a rotor rotatable within said stator, said stator comprising an inner wall and said rotor comprising an outer peripheral surface, saidrotor and stator defining between said wall and said surface a plurality of'separatesealed chambers, each chamber extending. longitudinally along the full axial length of said rotor surface, said chambers being disposed circumferentially adjacent to each other, sealing means sealingly separating adjacent chambers from each other, said sealingv means comprising longitudinal grooves circumferentially spaced apart in said stator, a plurality of separate sealing elements in each groove, said elements being longitudinally aligned and abutting one another along radial faces thereof, each of said elements being separately slidable in a radial direction in said groove, resilient biasing means separately urging each of said elements inwardly towards said rotor, said elements sealing.- ly contacting. said rotor peripheral surface.
10. The engine of claim 9, wherein said biasing means comprises a blade-type spring for each of said sealing elements and wherein. said sealing elements are in the form of an inverted T with each said spring, bearing against opposite'horizontal arms of one of said elements.
References. Cited. by the Examiner UNITED STATES PATENTS 724,994 4/03 Cooley 123 8 827,529 7/06 Hicks 91-105 1 ,350,231 8/20 McFarland 1'23-8 1,776,452 9/30 Rosenthal'; 103136 2,801,791 8/57 Walter 230 152 2,829,603 4/58 Clark 103-136 3 ,070,074 1'2/62 Mallinckrodt 1238 FOREIGN PATENTS 537,506 3/22 France; 21,136,531: 9/62 Germany. 5
15,015 8/26- The Netherlands.
5 8,490 9/ 11' Switzerland.
JOSEPH H. BRANSON, JR.,1 Primary Examiner.
LAURENCE VJEFNER, WILB-UR'J. GOODLIN, Examiners.

Claims (1)

1. A ROTARY ENGINE COMPRISING A STATOR HAVING AN INNER WALL WHICH DEFINES A HOLLOW COMPARTMENT, SAID WALL DEFINING IN RADIAL CROSS-SECTION A PLURALITY OF ANGULARLY ADJOINING CONCAVE RECESSES AND AN INWARDLY PROTRUDING APEX AT EACH POINT OF JUNCTURE BETWEEN TWO ADJOINING RECESSES, A ROTOR MOUNTED WITHIN SAID COMPARTMENT ALONG A LONGITUDINAL AXIS WHICH IS PARALLEL TO THE LONGITUDINAL AXIS OF SAID STATOR, SAID ROTOR HAVING A PERIPHERAL SURFACE WHICH DEFINES IN RADIAL CROSS-SECTON A PLURALITY OF CONVEX LOBES, EACH LOBE BEING CURVED SUBSTANTIALLY TO THE SAME CURVATURE AS EACH OF SAID RECESSES, SAID STATOR COMPRISING A LONGITUDINAL GROOVE AT EACH OF SAID APEXES, A SEALING MEANS IN EACH OF SAID GROOVES, EACH OF SAID SEALING MEANS COM-
US179931A 1961-03-31 1962-03-15 Segmentary sealing blades for rotary engines Expired - Lifetime US3175503A (en)

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FR857549A FR1293169A (en) 1961-03-31 1961-03-31 Split segments

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DE (1) DE1293786B (en)
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GB (1) GB994834A (en)
SE (1) SE303070B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3253581A (en) * 1962-07-23 1966-05-31 Daimler Benz Ag Rotary piston engine
US3270682A (en) * 1965-01-22 1966-09-06 Germane Corp Rotary fluid pressure device
US3289602A (en) * 1965-09-03 1966-12-06 Trw Inc Fluid pressure device
US3366317A (en) * 1966-04-30 1968-01-30 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine, especially circular piston internal combustion engine
US3369739A (en) * 1966-04-30 1968-02-20 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine, especially circular piston internal combustion engine
EP0845596A1 (en) * 1996-11-27 1998-06-03 Voith Turbo GmbH Internal gear pump with empty crescent space and spring biased sealing blades inserted in the teeth heads

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244501B (en) * 1963-05-06 1967-07-13 Borsig Ag Inwardly stretching sealing boundary for the working area of rotary piston machines, laid in several levels
DE1225454B (en) * 1963-12-20 1966-09-22 Nsu Motorenwerke Ag Sealing system for rotary piston machines
GB2215403A (en) * 1988-03-10 1989-09-20 Hydrovane Compressor Rotary compressors

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL15015C (en) *
US724994A (en) * 1900-10-26 1903-04-07 Cooley Epicycloidal Engine Dev Company Rotary fluid-engine.
US827529A (en) * 1905-10-10 1906-07-31 William R Brewer Rotary engine.
CH58490A (en) * 1911-09-23 1913-03-17 Antonio Carbone Rotary machine which can be used as a motor, as a pump or as a compressor
US1350231A (en) * 1918-05-08 1920-08-17 William L Mcfarland Rotary motor
FR537506A (en) * 1920-12-15 1922-05-24 Compressor for all fluids
US1776452A (en) * 1928-09-19 1930-09-23 Max G Rosenthal Rotary pump and the like
US2801791A (en) * 1953-07-14 1957-08-06 Worthington Corp Rotary compressor
US2829603A (en) * 1955-02-24 1958-04-08 George W Clark Fluid power device
US3070074A (en) * 1960-06-08 1962-12-25 Elliot Entpr Inc Rotary engine sealing means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1136531B (en) * 1960-10-07 1962-09-13 Daimler Benz Ag Rotary piston internal combustion engine in trochoid design

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL15015C (en) *
US724994A (en) * 1900-10-26 1903-04-07 Cooley Epicycloidal Engine Dev Company Rotary fluid-engine.
US827529A (en) * 1905-10-10 1906-07-31 William R Brewer Rotary engine.
CH58490A (en) * 1911-09-23 1913-03-17 Antonio Carbone Rotary machine which can be used as a motor, as a pump or as a compressor
US1350231A (en) * 1918-05-08 1920-08-17 William L Mcfarland Rotary motor
FR537506A (en) * 1920-12-15 1922-05-24 Compressor for all fluids
US1776452A (en) * 1928-09-19 1930-09-23 Max G Rosenthal Rotary pump and the like
US2801791A (en) * 1953-07-14 1957-08-06 Worthington Corp Rotary compressor
US2829603A (en) * 1955-02-24 1958-04-08 George W Clark Fluid power device
US3070074A (en) * 1960-06-08 1962-12-25 Elliot Entpr Inc Rotary engine sealing means

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3253581A (en) * 1962-07-23 1966-05-31 Daimler Benz Ag Rotary piston engine
US3270682A (en) * 1965-01-22 1966-09-06 Germane Corp Rotary fluid pressure device
US3289602A (en) * 1965-09-03 1966-12-06 Trw Inc Fluid pressure device
US3366317A (en) * 1966-04-30 1968-01-30 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine, especially circular piston internal combustion engine
US3369739A (en) * 1966-04-30 1968-02-20 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine, especially circular piston internal combustion engine
EP0845596A1 (en) * 1996-11-27 1998-06-03 Voith Turbo GmbH Internal gear pump with empty crescent space and spring biased sealing blades inserted in the teeth heads

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FR1293169A (en) 1962-05-11
ES275984A1 (en) 1962-05-16
GB994834A (en) 1965-06-10
DE1293786B (en) 1969-04-30
SE303070B (en) 1968-08-12

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