WO1997036107A1 - Dispositif d'entrainement rotatif etanche a excentricite, notamment pour pompe volumetrique - Google Patents
Dispositif d'entrainement rotatif etanche a excentricite, notamment pour pompe volumetrique Download PDFInfo
- Publication number
- WO1997036107A1 WO1997036107A1 PCT/FR1997/000479 FR9700479W WO9736107A1 WO 1997036107 A1 WO1997036107 A1 WO 1997036107A1 FR 9700479 W FR9700479 W FR 9700479W WO 9736107 A1 WO9736107 A1 WO 9736107A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- axis
- section
- input
- cuff
- 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
Links
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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
- F16J3/048—Bellows with guiding or supporting means
-
- 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
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C15/0065—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
- F16J3/047—Metallic bellows
Definitions
- the present invention relates to a waterproof rotary drive device with eccentricity, in particular for a positive displacement pump, that is to say a drive device making it possible to transform a rotary movement into a circular orbital movement, while insulating with a seal. absolute and durable the parts performing the orbital movement compared to those performing the rotary movement.
- Such a drive device is already used in positive displacement rotary piston pumps and it will be described below with reference to such a pump, it being understood that this device can also be used, for example in positive displacement pumps. eccentric screw, or even that this device can be mounted in order to constitute a drive assembly intended to transmit a rotary movement in a completely sealed manner.
- a circular piston performs an orbital movement inside a cylinder delimited by two circular walls of different diameters.
- the diameter of the piston is obviously between these two diameters.
- the cylinder is provided with a wall making it possible to isolate the suction and delivery chambers.
- the skirt of the piston is interrupted at the right of this wall also called partition.
- the center of the piston is animated in a circular movement while the piston does not rotate on itself, that is to say that the axes of abscissa and ordinate remain permanently parallel to their initial orientation.
- the waterproof eccentricity rotary drive device in particular for a positive displacement pump, is of the type comprising a shaft comprising an inlet section, rotatably supported by a fixed bearing and integral with a rotational drive means, and an output section, the axis of which is parallel and eccentric by a distance d relative to the axis of the entry section so as to describe a circular orbital movement around said entry axis during the rotation of the shaft, and a sealed and deformable sleeve, mounted in a sealed manner between two input and output support flanges surrounding in rotation respectively the two opposite ends of the input and output shaft.
- the shaft comprises an inclined intermediate section, which is arranged between the entry and exit sections and whose axis makes an angle a_ with the parallel entry and exit axes, the input support flange is made integral with the fixed bearing and the output support flange is associated with a wafer, which hermetically closes the cuff and in which is blindly housed a bearing associated with the outlet section, and the non-rotating cuff consists of two metal bellows tightly connected by a guide ring mounted in longitudinal sliding on the intermediate section of the shaft, so that any radial shear deformation of the cuff is not rotating is transformed into a simple angular deformation of compression-extension of each of the two bellows, each director of each bellows being forced to make an arc of a circle.
- the two metal bellows are identical, preferably of the corrugated or corrugated type, and are made of stainless steel, the guide ring connecting the two bellows being mounted with lingual sliding with respect to a support ring fixed on the inclined intermediate section,
- the optimal value of the angle a. is studied so that the respective axes of the two metal bellows each describe, during the rotation of the bent shaft, an arc of circle orthogonal to the respective end faces of the cuff, said arcs of circles being tangent to each other at the level of the end faces located on either side of the connection and guide ring, said end faces being respectively common to said ring and to the two bellows,
- the inlet section 2 has a shaft end 4 having an axis of rotation 5.
- This shaft end 4 is integral with a drive means in rotation not shown and generally having the same axis of rotation 5 as said inlet section 2.
- the shaft end 4 is rotatably supported by a fixed bearing 6, a conical or spherical bearing 7 being disposed between the bearing surface 8 of the shaft end 4 and the fixed bearing 6.
- the outlet section 3 has a shaft end 9 having an axis of rotation 10, which is parallel and eccentric at a distance d relative to the axis of rotation 5 of the inlet section 2 so to describe a circular orbital movement around said input axis 5 during the rotation of the shaft 1.
- the shaft end 9 is rotatably supported by a wafer 11 which will be studied in more detail below, a roller bearing 12 being disposed between said wafer 11 and a bearing 13 surrounding the end of the shaft 9.
- the pump secondly comprises a tight and deformable cuff, which is generally designated by 14 and which is mounted in a sealed manner between large and small support flanges, 15 and 16, surrounding the two ends of rotation respectively 'opposite input shaft 4 and output shaft 9 of the rotary shaft 1.
- the large flange 15 can be maintained at a fixed position, for example by peripheral studs, against the fixed bearing 6 of the shaft end d entry 4, while the small flange 16 can also be held, for example by locking screws, against the wafer 11 hermetically closing the cuff 14 and forming a blind housing not shown for the roller bearing 12 supporting the bearing 13 of the output shaft end 9.
- the shaft 1 comprises an inclined intermediate section 17 which is arranged between the inlet 2 and outlet 3 sections and the axis 18 of which forms an angle a with the axes d 'inlet 5 and outlet 10.
- the sleeve 14 consists of two metal bellows 19 and 20, which are tightly connected by a guide ring 21 mounted to slide longitudinally on the intermediate section 17 of the shaft 1 Under these conditions, any radial shear deformation of the cuff 14 is transformed into a simple angular compression-extension deformation of each of the two bellows 19 and 20, each director of each bellows 19 or 20 being forced to make an arc of circle.
- the two metal bellows 19 and 20 are generally identical and theoretically interchangeable and are of the ringed or corrugated type. They consist of stainless steel whose stiffness is such that the rotation of tree 1 does not train. the end plate 11 of the sleeve 14 of which only the inlet flange 15 is fixed. As a result, it is possible to eliminate the complex internal device with which the elastomer cuffs were necessarily provided to ensure the transformation of the rotational movement into an orbital movement.
- the guide ring 21 connecting the two metal bellows 19 and 20 is mounted to slide longitudinally relative to a support ring 22 fixed on the inclined intermediate section.
- a needle bearing 23 which can be inserted between the support ring 22 and the guide ring 21.
- the optimal value of the angle a is studied so that the respective axes 5, 18 and 18, 10 of the two metal bellows 19 and 20 each describe, during the rotation of the bent shaft 1, an arc of a circle orthogonal to the respective end faces 24, 25 of the sleeve 14, said arcs of circles being tangent to each other at the level of the end faces 26 and 27 situated on either side of the connection and guide ring 21, said end faces 26 and 27 being respectively common to the ring 21 and to the two bellows 19 and 20.
- the respective points of intersection 28, 29 between the axes 5, 18 and 10 are preferably located midway between the two end faces 24, 26 and 27, 25 of each of the sleeves. associated 19 and 20.
- the value of the angle of inclination a of the intermediate section 17 of the shaft 1 is approximately twice the value of the angle between the input axis 5 and the general direction of the segment not shown connecting the center 30 of the input terminal face 24 and the center 31 of the outlet end face 25 of the sleeve 14.
- the inlet section 2 is preferably slightly conical and has a reduction in diameter from the end of the inlet shaft 4, which has a cylindrical bearing surface 8 whose axis is the inlet axis 5 of the shaft 1, to a leave 32 for connection with the inclined intermediate section 17, the latter having a circular cross section of generally constant diameter and extending from the leave 32 for connection with the inlet section 2 and almost to the area of the output shaft end 9, whose axis is the output axis 10 of the shaft 1.
- the inclined intermediate section 17 has a zone 33 of slightly increased diameter, which is located at the middle part between the respective points of intersection 28, 29 of the inclined axis 18 of the intermediate section 17 with the parallel axes. inlet 5 and outlet 10 and which forms an intermediate surface 33, on which is fixed the ring 22 for supporting the guide ring 21 connecting the two metal bellows 19, 20 and mounted in longitudinal sliding with respect to said ring support 22.
- a pump comprises firstly a fixed cylinder, which is generally designated by 34, and secondly an eccentric rotary piston, which generally is mounted on the end of the cuff 14.
- the fixed cylinder 34 is constituted by a fixed cylindrical body 38 mounted between two fixed annular supports 39 and 40, the support 39 being integral with the fixed bearing 6 supporting the inlet section 2 of the shaft 1 and the support 40 of said body 38 being associated with the cylinder 34 of the pump, the piston of which is integral with the wafer 11 hermetically closing the cuff 14 and supported by the end of the output shaft 9 with circular orbital movement.
- the product to be pumped which can be a fluid or viscous liquid, is housed in particular between the non-rotating cuff 14 and the inner wall 35 of the fixed cylinder 34 and moves freely between the intake zone 36 and the suction zone. discharge 37.
- the suction-discharge 37 or pumping zone proper is located beyond the wafer 11 hermetically closing the cuff 14 and comprises suction and discharge chambers separated by a wall of the cylinder 34, the end with circular orbital movement of the eccentric piston comprising a skirt which is interrupted in line with said wall or partition, these known elements not being shown for clarity.
- the drive device is housed in the cylindrical body 38 of the pump, the large flange 15 for supporting the cuff 14 being able to be maintained at a fixed position, by the aforementioned studs, between the fixed bearing 6 of the input shaft end 4 and the annular support 39 of the cylinder 34.
- the drive device is mounted in a positive displacement pump, which is not shown.
- a pump generally comprises an eccentric helical screw or rotor, with one tooth, rotating in a helical stator with two teeth, the rotation generating closed volumes which move axially from the suction to the discharge.
- the pump stator is associated directly or indirectly with the fixed bearing 6 supporting the input section 2 of the shaft 1, while the eccentric rotor helical screw is associated with the wafer 11 and the shaft end outlet 9 with circular orbital motion. It is understood that the present invention has only been described and shown for explanatory purposes but is 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.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reciprocating Pumps (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Sealing Devices (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002221117A CA2221117C (fr) | 1996-03-22 | 1997-03-18 | Dispositif d'entrainement rotatif etanche a excentricite, notamment pour pompe volumetrique |
| DE69714935T DE69714935T2 (de) | 1996-03-22 | 1997-03-18 | Abgedichtete exzentergetriebene welle für eine verdrängerpumpe |
| US08/952,278 US5983738A (en) | 1996-03-22 | 1997-03-18 | Eccentric sealed rotary drive device, particularly for a positive displacement pump |
| DK97915513T DK0834016T3 (da) | 1996-03-22 | 1997-03-18 | Roterende, tæt, excenterdrivenhed, især til en volumetrisk pumpe |
| AT97915513T ATE222999T1 (de) | 1996-03-22 | 1997-03-18 | Abgedichtete exzentergetriebene welle für eine verdrängerpumpe |
| EP97915513A EP0834016B1 (fr) | 1996-03-22 | 1997-03-18 | Dispositif d'entrainement rotatif etanche a excentricite, notamment pour pompe volumetrique |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9603588A FR2746452B1 (fr) | 1996-03-22 | 1996-03-22 | Dispositif d'entrainement rotatif etanche a excentricite, notamment pour pompe volumetrique |
| FR96/03588 | 1996-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997036107A1 true WO1997036107A1 (fr) | 1997-10-02 |
Family
ID=9490445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1997/000479 Ceased WO1997036107A1 (fr) | 1996-03-22 | 1997-03-18 | Dispositif d'entrainement rotatif etanche a excentricite, notamment pour pompe volumetrique |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5983738A (fr) |
| EP (1) | EP0834016B1 (fr) |
| KR (1) | KR100460266B1 (fr) |
| CN (1) | CN1102701C (fr) |
| AT (1) | ATE222999T1 (fr) |
| DE (1) | DE69714935T2 (fr) |
| DK (1) | DK0834016T3 (fr) |
| ES (1) | ES2182057T3 (fr) |
| FR (1) | FR2746452B1 (fr) |
| PT (1) | PT834016E (fr) |
| WO (1) | WO1997036107A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019115890A1 (fr) | 2017-12-14 | 2019-06-20 | Mouvex | Pompe volumétrique à nettoyage amélioré |
| FR3093140A1 (fr) | 2019-02-26 | 2020-08-28 | Mouvex | Pompe volumétrique à piston excentré |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20218878U1 (de) * | 2002-12-06 | 2003-02-13 | Burgmann Dichtungswerke GmbH & Co. KG, 82515 Wolfratshausen | Gleitringdichtungsanordnung |
| WO2007123635A1 (fr) * | 2006-03-28 | 2007-11-01 | Emerson Climate Technologies, Inc. | Arbre d'entraînement pour compresseur |
| US20070231170A1 (en) * | 2006-03-28 | 2007-10-04 | Xiaogen Su | Drive shaft for a compressor |
| FR2912788A1 (fr) * | 2007-02-19 | 2008-08-22 | Blackmer Soc Par Actions Simpl | Dispositif etanche de transmission d'un mouvement de rotation a l'interieur d'une chambre |
| DE202007019039U1 (de) | 2007-09-12 | 2010-06-24 | Fischer, Francesco Peter, Dipl.-Ing. | Vorrichtung zum Pumpen eines Mediums nach dem Orbitalverdrängerprinzip |
| FR2945328A1 (fr) * | 2009-05-11 | 2010-11-12 | Mouvex | Dispositif etanche de transmission d'un mouvement de rotation et systeme de pompage comprenant un tel dispositif |
| FR2971575B1 (fr) * | 2011-02-11 | 2013-12-13 | Snecma | Element de conduit a perte de charge reduite |
| CN102966661B (zh) * | 2011-08-31 | 2014-12-10 | 艾默生环境优化技术(苏州)有限公司 | 用于压缩机的驱动轴、压缩机和驱动轴的弯曲方法 |
| US9657556B2 (en) * | 2014-11-17 | 2017-05-23 | Baker Hughes Incorporated | Metal bellows with guide rings |
| DE102015010126A1 (de) | 2015-08-10 | 2017-02-16 | Windmöller & Hölscher Kg | Farbkreislauf eines Farbwerks einer Flexo- oder Tiefdruckmaschine |
| CA3033626A1 (fr) | 2016-08-09 | 2018-02-15 | Baker Hughes, A Ge Company, Llc | Entrainement excentrique etanche pour pompe submersible |
| DE102019107630A1 (de) | 2019-03-25 | 2020-10-01 | Vat Holding Ag | Membranbalg |
| ES2943501T3 (es) | 2020-04-29 | 2023-06-13 | Reinhold Schulte | Bomba de desplazamiento positivo |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1165435A (en) * | 1966-10-06 | 1969-10-01 | Paul Vulliez | Improvements in or relating to Rotary Positive Displacement Pumps |
| FR1596943A (fr) * | 1967-12-18 | 1970-06-22 | ||
| US3782865A (en) * | 1971-03-05 | 1974-01-01 | A Braun | Sealing sleeve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3247731A (en) * | 1963-09-30 | 1966-04-26 | Hughes Aircraft Co | Flexible seal |
| US3252341A (en) * | 1964-12-09 | 1966-05-24 | Sydney H Reiter | High speed hermetically sealed shaft coupling |
| US3364754A (en) * | 1966-05-16 | 1968-01-23 | Honeywell Inc | Controllers |
| US3782685A (en) * | 1972-07-17 | 1974-01-01 | Nupro Co | Bellows sealed butterfly valve |
| US4185839A (en) * | 1977-08-26 | 1980-01-29 | Allen Clifford H | Packing gland for pump shaft seal |
| US4540019A (en) * | 1982-03-11 | 1985-09-10 | Kerotest Manufacturing Corp. | Bellows sealed stem for rotary valve |
| JPS58142449U (ja) * | 1982-03-19 | 1983-09-26 | トヨタ自動車株式会社 | ブ−ツ |
| US4831277A (en) * | 1987-08-11 | 1989-05-16 | Christopher Nicholas S | Remote power system |
-
1996
- 1996-03-22 FR FR9603588A patent/FR2746452B1/fr not_active Expired - Lifetime
-
1997
- 1997-03-18 PT PT97915513T patent/PT834016E/pt unknown
- 1997-03-18 AT AT97915513T patent/ATE222999T1/de active
- 1997-03-18 ES ES97915513T patent/ES2182057T3/es not_active Expired - Lifetime
- 1997-03-18 CN CN97190231A patent/CN1102701C/zh not_active Expired - Lifetime
- 1997-03-18 DE DE69714935T patent/DE69714935T2/de not_active Expired - Lifetime
- 1997-03-18 KR KR1019970708328A patent/KR100460266B1/ko not_active Expired - Lifetime
- 1997-03-18 WO PCT/FR1997/000479 patent/WO1997036107A1/fr not_active Ceased
- 1997-03-18 DK DK97915513T patent/DK0834016T3/da active
- 1997-03-18 US US08/952,278 patent/US5983738A/en not_active Expired - Lifetime
- 1997-03-18 EP EP97915513A patent/EP0834016B1/fr not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1165435A (en) * | 1966-10-06 | 1969-10-01 | Paul Vulliez | Improvements in or relating to Rotary Positive Displacement Pumps |
| FR1596943A (fr) * | 1967-12-18 | 1970-06-22 | ||
| US3782865A (en) * | 1971-03-05 | 1974-01-01 | A Braun | Sealing sleeve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019115890A1 (fr) | 2017-12-14 | 2019-06-20 | Mouvex | Pompe volumétrique à nettoyage amélioré |
| FR3075280A1 (fr) * | 2017-12-14 | 2019-06-21 | Mouvex | Pompe volumetrique a nettoyage ameliore |
| JP2021507160A (ja) * | 2017-12-14 | 2021-02-22 | ムーベックス | 洗浄を改善する容積移送式ポンプ |
| US11319955B2 (en) | 2017-12-14 | 2022-05-03 | Mouvex | Positive displacement pump with improved cleaning |
| FR3093140A1 (fr) | 2019-02-26 | 2020-08-28 | Mouvex | Pompe volumétrique à piston excentré |
| EP3702583A1 (fr) | 2019-02-26 | 2020-09-02 | Mouvex | Pompe volumétrique à piston excentré |
| US11619227B2 (en) | 2019-02-26 | 2023-04-04 | Mouvex | Positive displacement pump having an eccentric piston |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0834016B1 (fr) | 2002-08-28 |
| DK0834016T3 (da) | 2003-01-06 |
| ATE222999T1 (de) | 2002-09-15 |
| DE69714935D1 (de) | 2002-10-02 |
| CN1183135A (zh) | 1998-05-27 |
| KR19990021854A (ko) | 1999-03-25 |
| KR100460266B1 (ko) | 2005-04-06 |
| CN1102701C (zh) | 2003-03-05 |
| FR2746452A1 (fr) | 1997-09-26 |
| DE69714935T2 (de) | 2003-05-28 |
| EP0834016A1 (fr) | 1998-04-08 |
| ES2182057T3 (es) | 2003-03-01 |
| US5983738A (en) | 1999-11-16 |
| PT834016E (pt) | 2003-01-31 |
| FR2746452B1 (fr) | 1998-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0834016B1 (fr) | Dispositif d'entrainement rotatif etanche a excentricite, notamment pour pompe volumetrique | |
| EP0728948B1 (fr) | Pompe à vide à spirales | |
| CH514787A (fr) | Machine volumétrique, notamment pompe à vide | |
| WO2015011384A1 (fr) | Sous-ensemble oscillo-rotatif et dispositif de pompage volumétrique oscillo-rotatif pour pompage volumétrique d'un fluide | |
| CA2918927C (fr) | Sous-ensemble oscillo-rotatif pour pompage d'un fluide et dispositif de pompage oscillo-rotatif | |
| FR2567970A1 (fr) | Pompe a vide integralement seche et etanche a mouvement rectiligne de compression alternative | |
| CA2949729A1 (fr) | Raccord d'etancheite tournant haute-pression a bague continue extensible | |
| EP0882893A2 (fr) | Machine a déplacement de fluide du type scroll | |
| EP0534836B1 (fr) | Machine hydraulique du type à engrenages à corps flottant | |
| FR2509802A1 (fr) | Pompes et moteurs | |
| FR2604489A1 (fr) | Dispositif a fluide du type a disque a mouvement de nutation | |
| FR3063325A1 (fr) | Attelage articule pour dispositif d'etancheite pour piston | |
| FR2514079A1 (fr) | Machine a pistons radiaux, notamment pompe a pistons a bille | |
| WO2021198572A1 (fr) | Piston hydraulique à gorge dépressurisée | |
| EP4409139B1 (fr) | Pompe volumetrique a lobes | |
| FR2521649A1 (fr) | Machine pour l'aspiration et le refoulement d'un fluide | |
| EP3702583B1 (fr) | Pompe volumétrique à piston excentré | |
| BE333628A (fr) | ||
| FR2682999A1 (fr) | Pompe peristaltique. | |
| FR2541414A1 (fr) | Dispositif d'etancheite pour arbre de machines tournantes | |
| FR2582740A1 (fr) | Pompe a piston excentrique | |
| FR2507255A1 (fr) | Pompe a membrane | |
| FR2478751A1 (fr) | Pompe rotative a membrane | |
| CH379923A (fr) | Pompe à mouvement alternatif | |
| FR2945328A1 (fr) | Dispositif etanche de transmission d'un mouvement de rotation et systeme de pompage comprenant un tel dispositif |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 97190231.3 Country of ref document: CN |
|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA CN JP KR US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
| ENP | Entry into the national phase |
Ref document number: 2221117 Country of ref document: CA Ref document number: 2221117 Country of ref document: CA Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 08952278 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1019970708328 Country of ref document: KR |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1997915513 Country of ref document: EP |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWP | Wipo information: published in national office |
Ref document number: 1997915513 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref document number: 97534069 Country of ref document: JP |
|
| WWP | Wipo information: published in national office |
Ref document number: 1019970708328 Country of ref document: KR |
|
| WWG | Wipo information: grant in national office |
Ref document number: 1997915513 Country of ref document: EP |
|
| WWG | Wipo information: grant in national office |
Ref document number: 1019970708328 Country of ref document: KR |