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EP0578533A1 - Vane pump for foodstuffs - Google Patents

Vane pump for foodstuffs Download PDF

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Publication number
EP0578533A1
EP0578533A1 EP93401660A EP93401660A EP0578533A1 EP 0578533 A1 EP0578533 A1 EP 0578533A1 EP 93401660 A EP93401660 A EP 93401660A EP 93401660 A EP93401660 A EP 93401660A EP 0578533 A1 EP0578533 A1 EP 0578533A1
Authority
EP
European Patent Office
Prior art keywords
rotor
pump according
cover
shaft
edge
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.)
Withdrawn
Application number
EP93401660A
Other languages
German (de)
French (fr)
Inventor
André Sergent
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.)
Mouvex SAS
Original Assignee
Mouvex SAS
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 Mouvex SAS filed Critical Mouvex SAS
Publication of EP0578533A1 publication Critical patent/EP0578533A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0854—Vane tracking; control therefor by fluid means
    • F01C21/0863—Vane tracking; control therefor by fluid means the fluid being the working fluid

Definitions

  • the present invention relates to a vane pump for pumping fluids from the food industry.
  • the present invention therefore aims to fulfill the above conditions, by providing a vane pump comprising in particular no vane pusher usually requiring drilling in the shaft and the rotor, which is particularly harmful from a bacteriological point of view.
  • the pump for food products is of the type comprising a stator-forming body connected to the suction and discharge conduits, in which is arranged a rotor provided with the housings of the full radial vanes and mounted on a shaft.
  • the rotor constituting a blind socket on the shaft, provided with a seal relative to the latter at the end opposite to the blind part of the socket, while a cover mounted on the body, on the blind side of the rotor, comprises an internal circular cavity and a channel opening, on the one hand, into the discharge and, on the other hand, into said cavity.
  • the parts located under the pallets are all in communication and subjected to the discharge pressure tending to apply them on the surface of the stator. It is thus possible to pump both fluid and viscous products, without the need for pallet pushers which would lead, as mentioned above, to the holes in the rotor and the shaft, which are bacteriologically harmful.
  • a pump according to the invention comprises in a manner known per se a body 1 whose internal wall 2 defines a stator, in which is disposed an off-center rotor 3 secured to a drive shaft 4 and provided with housings 5 of full radial pallets 6.
  • the body 1 further comprises the suction 7 and discharge 8 conduits advantageously from the foundry with said body.
  • the front part of the body, of general reference 9, is closed by a ferrule 10 through which the shaft 4 passes and it comprises the assembly 11 of the usual mounting and sealing elements.
  • the rotor 3 is mounted freely on the shaft 4, by means of a key 12 for locking in rotation, on which it forms a socket comprising a fitted cylindrical part 13 and a blind bottom 14. So that the pumped product cannot penetrate between the shaft 4 and the bore of the cylindrical part 13 to stagnate therein, a seal in the form of an O-ring 15 is placed in a groove 16 of the rotor in contact of the shaft 4.
  • the cover 17 mounted on the body 1 of the blind side 14 of the rotor, provided with a groove 18 for an O-ring, comprises a circular cavity 19 concentric with the shaft 4 and of a diameter such that the internal parts of the housings 5 of the pallets, directed towards the shaft 4, open into said bowl and are all in communication.
  • a hollow channel 20 opens, on the one hand, into the outlet 8 of the pump and, on the other hand, into this bowl.
  • the circular cavity 19 into which the channel 20 opens has an edge 21 parallel to the bottom 22, arranged in relief relative to the latter and limited by an edge 23 whose curve is directly deduced from the stator profile.
  • the base of the pallets 6 has two rectangular notches 24, 25 the purpose of which will be specified below.
  • the front internal face 26 forming a bottom of the body 1, which can be attached comprises the homologous parts 27 of the edge 21 and 28 of the edge 23.
  • the space between the internal face 2 of the stator and the respective edges 23, 28 has substantially the same width as the lateral faces 29, 30 of the pallets which are in contact with the respective bottoms 22 and 26.
  • the notches 24, 25 take respectively support on the edges 23, 28 and, therefore, during the rotation of the rotor, the vanes are guided in their radial movement by means of said edges whose curve they follow. This guidance is particularly useful at the start of pumping, where the discharge pressure is not yet established and cannot ensure the thrust on the vanes and their application on the surface of the stator, which is normally reached in pumping regime .
  • the pump according to the invention provides an easy solution to the problem posed by pumping fluids food, because it does not contain any site favoring a bacteriological accumulation and which is not susceptible to easy cleaning, while ensuring its service with maximum efficiency.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to the field of vane pumps. The vane pump according to the invention, including a body (1) forming a stator connected to the intake (7) and delivery (8) ducts, in which is located an off-centred rotor (3) equipped with housings (5) for the solid radial vanes (6) and mounted on a drive shaft (4), is essentially characterised in that the rotor constitutes a blind socket on the shaft, equipped with a seal with respect to the latter at the opposite end from the blind part of the socket, whereas a cover mounted on the body, on the blind side of the rotor, comprises an internal circular cavity (19) concentric with the rotor and a passage (20) emerging, on the one hand, in the delivery and, on the other hand, in the said cavity. Application to the pumping of food products. <IMAGE>

Description

La présente invention concerne une pompe à palettes destinée au pompage de fluides de l'industrie alimentaire.The present invention relates to a vane pump for pumping fluids from the food industry.

On sait que pour qu'une pompe soit utilisable dans cette industrie, il faut qu'elle réponde à des impératifs sanitaires rigoureux, par exemple, toutes surfaces usinées, excellents états de surface, aucun recoin, facilité de lavage par solutions adaptées etc. Dans ces conditions, une pompe à palettes usuelle ne peut être utilisée, à moins d'être fréquemment demontée pour nettoyage, si toutefois elle présente les autres critères quant à sa structure.We know that for a pump to be usable in this industry, it must meet rigorous sanitary requirements, for example, all machined surfaces, excellent surface conditions, no nooks, ease of washing with suitable solutions, etc. Under these conditions, a conventional vane pump cannot be used, unless it is frequently dismantled for cleaning, if however it has the other criteria as to its structure.

La présente invention vise donc à remplir les conditions ci-dessus, en fournissant une pompe à palettes ne comportant notamment aucun poussoir de palette nécessitant de manière usuelle des perçages dans l'arbre et le rotor, ce qui est particulièrement néfaste sur le plan bactériologique.The present invention therefore aims to fulfill the above conditions, by providing a vane pump comprising in particular no vane pusher usually requiring drilling in the shaft and the rotor, which is particularly harmful from a bacteriological point of view.

Conformément à l'invention, la pompe pour produits alimentaires est du type comportant un corps formant stator relié aux conduits de l'aspiration et du refoulement, dans lequel est disposé un rotor muni des logements des palettes radiales pleines et monté sur un arbre d'entraînement, le rotor constituant un emboîtement borgne sur l'arbre, muni d'un joint d'étanchéité par rapport à ce dernier à l'extrémité opposée à la partie borgne de l'emboîtement, tandis qu'un couvercle monté sur le corps, du côté borgne du rotor, comprend une cavité circulaire interne et un canal débouchant, d'une part, dans le refoulement et, d'autre part, dans ladite cavité.In accordance with the invention, the pump for food products is of the type comprising a stator-forming body connected to the suction and discharge conduits, in which is arranged a rotor provided with the housings of the full radial vanes and mounted on a shaft. drive, the rotor constituting a blind socket on the shaft, provided with a seal relative to the latter at the end opposite to the blind part of the socket, while a cover mounted on the body, on the blind side of the rotor, comprises an internal circular cavity and a channel opening, on the one hand, into the discharge and, on the other hand, into said cavity.

Selon cet agencement, les parties situées sous les palettes se trouvent toutes en communication et soumises à la pression de refoulement tendant à les appliquer sur la surface du stator. Il est ainsi possible de pomper aussi bien des produits fluides que des produits visqueux, sans avoir besoin de poussoirs de palettes qui conduiraient, comme mentionné plus haut, aux trous dans le rotor et l'arbre, néfastes sur le plan bactériologique.According to this arrangement, the parts located under the pallets are all in communication and subjected to the discharge pressure tending to apply them on the surface of the stator. It is thus possible to pump both fluid and viscous products, without the need for pallet pushers which would lead, as mentioned above, to the holes in the rotor and the shaft, which are bacteriologically harmful.

D'autres caractéristiques et avantages de l'invention ressortiront mieux de la description qui va suivre, faite en regard des dessins annexés sur lesquels :

  • la figure 1 représente une vue en coupe transversale d'une pompe selon l'invention suivant l'axe des conduits d'aspiration et du refoulement perpendiculairement à l'arbre d'entraînement ;
  • la figure 2 représente une vue en coupe longitudinale de la pompe selon A-A de la figure 1 ;
  • la figure 3 représente une vue en coupe longitudinale de la pompe selon l'axe des conduits d'aspiration et du refoulement ;
  • les figures 4 à 6 représentent des vues schématiques du couvercle du corps, respectivement en plan, en coupe et en perspective ; et
  • les figures 7 à 10 représentent des vues schématiques en perspective du corps et du couvercle selon une forme de réalisation avantageuse de la pome selon l'invention.
Other characteristics and advantages of the invention will emerge more clearly from the description which follows, given with reference to the appended drawings in which:
  • Figure 1 shows a cross-sectional view of a pump according to the invention along the axis of the suction and delivery conduits perpendicular to the drive shaft;
  • 2 shows a longitudinal sectional view of the pump along AA of Figure 1;
  • FIG. 3 represents a view in longitudinal section of the pump along the axis of the suction and delivery pipes;
  • Figures 4 to 6 show schematic views of the body cover, respectively in plan, in section and in perspective; and
  • Figures 7 to 10 show schematic perspective views of the body and the cover according to an advantageous embodiment of the container according to the invention.

Sur ces dessins, les mêmes références désignent les mêmes éléments.In these drawings, the same references designate the same elements.

En se référant aux dessins, une pompe selon l'invention comprend de façon connue en soi un corps 1 dont la paroi interne 2 définit un stator, dans lequel est disposé un rotor décentré 3 solidarisé à un arbre d'entraînement 4 et muni de logements 5 de palettes radiales pleines 6. Le corps 1 comprend en outre les conduits de l'aspiration 7 et du refoulement 8 avantageusement venus de fonderie avec ledit corps. La partie avant du corps, de référence générale 9, est obturée par une virole 10 traversée par l'arbre 4 et elle comprend l'ensemble 11 des éléments de montage et d'étanchéité usuels.Referring to the drawings, a pump according to the invention comprises in a manner known per se a body 1 whose internal wall 2 defines a stator, in which is disposed an off-center rotor 3 secured to a drive shaft 4 and provided with housings 5 of full radial pallets 6. The body 1 further comprises the suction 7 and discharge 8 conduits advantageously from the foundry with said body. The front part of the body, of general reference 9, is closed by a ferrule 10 through which the shaft 4 passes and it comprises the assembly 11 of the usual mounting and sealing elements.

Conformément à l'invention, le rotor 3 est monté libre sur l'arbre 4, par l'intermédiaire d'une clavette 12 de blocage en rotation, sur lequel il forme un emboîtement comprenant une partie cylindrique ajustée 13 et un fond borgne 14. Pour que le produit pompé ne puisse pénétrer entre l'arbre 4 et l'alésage de la partie cylindrique 13 pour y stagner, un joint d'étanchéité sous la forme d'un joint torique 15 est disposé dans une gorge 16 du rotor au contact de l'arbre 4. Le couvercle 17 monté sur le corps 1 du côté borgne 14 du rotor, muni d'une gorge 18 pour un joint torique, comporte une cavité circulaire 19 concentrique à l'arbre 4 et d'un diamètre tel que les parties internes des logements 5 des palettes, dirigées vers l'arbre 4, débouchent dans ladite cuvette et se trouvent toutes en communication. En outre, un canal 20 en creux débouche, d'une part, dans le refoulement 8 de la pompe et, d'autre part, dans cette cuvette. Cette disposition permet d'apporter la pression de refoulement sous les palettes et d'appliquer ainsi ces dernières sur la surface 2 du stator, outre l'effet de la force centrifuge, ce qui autorise comme indiqué plus haut de pomper aussi bien des produits fluides que des produits visqueux.According to the invention, the rotor 3 is mounted freely on the shaft 4, by means of a key 12 for locking in rotation, on which it forms a socket comprising a fitted cylindrical part 13 and a blind bottom 14. So that the pumped product cannot penetrate between the shaft 4 and the bore of the cylindrical part 13 to stagnate therein, a seal in the form of an O-ring 15 is placed in a groove 16 of the rotor in contact of the shaft 4. The cover 17 mounted on the body 1 of the blind side 14 of the rotor, provided with a groove 18 for an O-ring, comprises a circular cavity 19 concentric with the shaft 4 and of a diameter such that the internal parts of the housings 5 of the pallets, directed towards the shaft 4, open into said bowl and are all in communication. In addition, a hollow channel 20 opens, on the one hand, into the outlet 8 of the pump and, on the other hand, into this bowl. This arrangement makes it possible to bring the discharge pressure under the vanes and thus to apply them on the surface 2 of the stator, in addition to the effect of the centrifugal force, which allows, as indicated above, to pump fluid products as well only viscous products.

Selon une forme de réalisation avantageuse d'une pompe selon l'invention, la cavité circulaire 19 dans laquelle débouche le canal 20 comporte un bord 21 parallèle au fond 22, disposé en relief par rapport à ce dernier et limité par une arête 23 dont la courbe est directement déduite du profil du stator. Par ailleurs, la base des palettes 6 présente deux échancrures rectangulaires 24, 25 dont le but sera précisé ci-après. En se référant plus particulièrement aux figures 9 et 10, la face interne avant 26 formant un fond du corps 1, qui peut être rapportée, comporte les parties homologues 27 du bord 21 et 28 de l'arête 23. Dans une pompe ainsi agencée, l'espace compris entre la face interne 2 du stator et les arêtes respectives 23, 28 présente sensiblement la même largeur que les faces latérales 29, 30 des palettes qui sont au contact des fonds respectifs 22 et 26. Les échancrures 24, 25 prennent respectivement appui sur les arêtes 23, 28 et,de ce fait, lors de la rotation du rotor, les palettes sont guidées dans leur mouvement radial par l'intermédiaire desdites arêtes dont elles suivent la courbe. Ce guidage présente en particulier tout son intérêt en début de pompage, où la pression de refoulement n'est pas encore établie et ne peut assurer la poussée sur les palettes et leur application sur la surface du stator, qui est normalement atteinte en régime de pompage.According to an advantageous embodiment of a pump according to the invention, the circular cavity 19 into which the channel 20 opens has an edge 21 parallel to the bottom 22, arranged in relief relative to the latter and limited by an edge 23 whose curve is directly deduced from the stator profile. Furthermore, the base of the pallets 6 has two rectangular notches 24, 25 the purpose of which will be specified below. With particular reference to FIGS. 9 and 10, the front internal face 26 forming a bottom of the body 1, which can be attached, comprises the homologous parts 27 of the edge 21 and 28 of the edge 23. In a pump thus arranged, the space between the internal face 2 of the stator and the respective edges 23, 28 has substantially the same width as the lateral faces 29, 30 of the pallets which are in contact with the respective bottoms 22 and 26. The notches 24, 25 take respectively support on the edges 23, 28 and, therefore, during the rotation of the rotor, the vanes are guided in their radial movement by means of said edges whose curve they follow. This guidance is particularly useful at the start of pumping, where the discharge pressure is not yet established and cannot ensure the thrust on the vanes and their application on the surface of the stator, which is normally reached in pumping regime .

Il est clair que la pompe selon l'invention apporte une solution aisée au problème posé par le pompage de fluides alimentaires, du fait qu'elle ne comporte aucun site favorisant une accumulation bactériologique et qui ne soit susceptible d'un nettoyage facile, tout en assurant son service avec un maximum d'efficacité.It is clear that the pump according to the invention provides an easy solution to the problem posed by pumping fluids food, because it does not contain any site favoring a bacteriological accumulation and which is not susceptible to easy cleaning, while ensuring its service with maximum efficiency.

Il est bien entendu que la présente invention n'a été décrite et représentée qu'à titre explicatif mais nullement limitatif et qu'on pourra y apporter toute modification utile, notamment dans le domaine des équivalences techniques, sans sortir de son cadre.It is understood that the present invention has been described and shown for explanatory purposes but in no way limitative and that any useful modification may be made to it, in particular in the field of technical equivalences, without going beyond its ambit.

Claims (6)

Pompe à palettes pour produits alimentaires, comportant un corps (1) formant stator relié aux conduits de l'aspiration (7) et du refoulement (8) dans lequel est disposé un rotor excentré (3) muni des logements (5) des palettes radiales pleines (6) et monté sur un arbre d'entraînement (4), caractérisée par le fait que le rotor constitue un emboîtement borgne sur l'arbre, muni d'un joint d'étanchéité (15) par rapport à ce dernier à l'extrémité opposée à la partie borgne (14) de l'emboîtement tandis qu'un couvercle (17) monté sur le corps, du côté borgne du rotor, comprend une cavité circulaire interne (19) concentrique au rotor et un canal (20) débouchant, d'une part, dans le refoulement et, d'autre part, dans ladite cavité.Vane pump for food products, comprising a body (1) forming a stator connected to the suction (7) and discharge (8) conduits in which is disposed an eccentric rotor (3) provided with the housings (5) of the radial vanes solid (6) and mounted on a drive shaft (4), characterized in that the rotor forms a blind socket on the shaft, provided with a seal (15) with respect to the latter at l end opposite to the blind part (14) of the socket while a cover (17) mounted on the body, on the blind side of the rotor, comprises an internal circular cavity (19) concentric with the rotor and a channel (20) opening, on the one hand, into the discharge and, on the other hand, into said cavity. Pompe selon la revendication 1, caractérisée par le fait que le rotor comprend une partie cylindrique (13) ajustée sur l'arbre et un fond (14), ainsi qu'une gorge (16) pour un joint torique formant le joint d'étanchéité.Pump according to claim 1, characterized in that the rotor comprises a cylindrical part (13) fitted on the shaft and a bottom (14), as well as a groove (16) for an O-ring forming the seal. . Pompe selon l'une des revendications 1 ou 2, caractérisée par le fait que le rotor est monté libre sur l'arbre par l'intermédiaire d'une clavette (12) de blocage en rotation.Pump according to one of claims 1 or 2, characterized in that the rotor is mounted free on the shaft by means of a key (12) for locking in rotation. Pompe selon l'une quelconque des revendications 1 à 3, caractérisée par le fait que le diamètre de la cavité circulaire (19) du couvercle est tel que les parties internes des logements des palettes débouchent dans ladite cuvette.Pump according to any one of claims 1 to 3, characterized in that the diameter of the circular cavity (19) of the cover is such that the internal parts of the pallet housings open into said bowl. Pompe selon l'une quelconque des revendications 1 à 4, caractérisée par le fait que la cavité circulaire (19) du couvercle (17) comporte un bord (21) parallèle au fond (22), en relief par rapport à ce dernier et limité par une arête (23) dont la courbe est directement déduite du profil du stator (2), la face interne avant (26) du corps comportant un bord en relief (27) présentant une arête (28) homologue de l'arête (23) dudit couvercle.Pump according to any one of Claims 1 to 4, characterized in that the circular cavity (19) of the cover (17) has an edge (21) parallel to the bottom (22), in relief with respect to the latter and limited by an edge (23) whose curve is directly deduced from the profile of the stator (2), the front internal face (26) of the body comprising a raised edge (27) having an edge (28) homologous to the edge (23 ) of said cover. Pompe selon la revendication 5, caractérisée par le fait que la base des palettes comporte deux échancrures rectangulaires (24, 25) complémentaires respectivement des arêtes (23, 28) du couvercle et de la partie interne avant du corps sur lesquelles elles prennent appui et destinées à guider lesdites palettes dans leur mouvement radial.Pump according to claim 5, characterized by the fact that the base of the pallets comprises two rectangular notches (24, 25) respectively complementary to the edges (23, 28) of the cover and of the front internal part of the body on which they bear and intended to guide said pallets in their radial movement.
EP93401660A 1992-06-30 1993-06-28 Vane pump for foodstuffs Withdrawn EP0578533A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9208034A FR2692941A1 (en) 1992-06-30 1992-06-30 Pallet pump for food products.
FR9208034 1992-06-30

Publications (1)

Publication Number Publication Date
EP0578533A1 true EP0578533A1 (en) 1994-01-12

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ID=9431350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401660A Withdrawn EP0578533A1 (en) 1992-06-30 1993-06-28 Vane pump for foodstuffs

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EP (1) EP0578533A1 (en)
FR (1) FR2692941A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1283367A3 (en) * 2001-08-10 2003-05-28 Seiko Instruments Inc. Vane compressor
EP2327963A3 (en) * 2009-11-30 2014-02-05 SMC Corporation Fluid pressure cylinder with position detecting device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR386967A (en) * 1907-04-25 1908-06-27 Jean Nepomucene Hochgesand Device that can be used as a pump or rotary motor
US1539728A (en) * 1924-02-23 1925-05-26 Lloyd V Reynolds Rotary pump
DE1403301A1 (en) * 1958-06-23 1969-03-27 Jabsco Pump Company Connection arrangement between a rotor and a shaft, in particular for a pump
FR2242885A5 (en) * 1973-09-04 1975-03-28 Cenco Inc
US4493626A (en) * 1982-07-22 1985-01-15 Mitsubishi Denki Kabushiki Kaisha Auxiliary radially shifting mechanism for vanes in a pump of the vane type
EP0371167A1 (en) * 1988-11-30 1990-06-06 Siemens Aktiengesellschaft Rotary vane pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR386967A (en) * 1907-04-25 1908-06-27 Jean Nepomucene Hochgesand Device that can be used as a pump or rotary motor
US1539728A (en) * 1924-02-23 1925-05-26 Lloyd V Reynolds Rotary pump
DE1403301A1 (en) * 1958-06-23 1969-03-27 Jabsco Pump Company Connection arrangement between a rotor and a shaft, in particular for a pump
FR2242885A5 (en) * 1973-09-04 1975-03-28 Cenco Inc
US4493626A (en) * 1982-07-22 1985-01-15 Mitsubishi Denki Kabushiki Kaisha Auxiliary radially shifting mechanism for vanes in a pump of the vane type
EP0371167A1 (en) * 1988-11-30 1990-06-06 Siemens Aktiengesellschaft Rotary vane pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1283367A3 (en) * 2001-08-10 2003-05-28 Seiko Instruments Inc. Vane compressor
EP2327963A3 (en) * 2009-11-30 2014-02-05 SMC Corporation Fluid pressure cylinder with position detecting device

Also Published As

Publication number Publication date
FR2692941A1 (en) 1993-12-31

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