EP0618365B1 - Verdrängermaschine mit magnetischer Führung - Google Patents
Verdrängermaschine mit magnetischer Führung Download PDFInfo
- Publication number
- EP0618365B1 EP0618365B1 EP94400343A EP94400343A EP0618365B1 EP 0618365 B1 EP0618365 B1 EP 0618365B1 EP 94400343 A EP94400343 A EP 94400343A EP 94400343 A EP94400343 A EP 94400343A EP 0618365 B1 EP0618365 B1 EP 0618365B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- piston
- casing
- capsule
- axes
- 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.)
- Expired - Lifetime
Links
Images
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
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
-
- 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
- F04C15/008—Prime movers
-
- 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
- F04C2/22—Rotary-piston machines or pumps of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
Definitions
- the present invention relates to a volumetric machine such as a vacuum pump or a compressor.
- the invention applies to a vacuum pump of small flow, dry, non-polluting and capable of discharging the pumped gas at atmospheric pressure.
- Roots, claw or twin screw pumps are known, but these machines have two shafts, synchronized in rotation by lubricated gears, so they are not entirely dry.
- Dry vane pumps are still known, but the vanes wear out quickly and cause a significant deterioration in performance, a short service life of the pump and pollution of the vacuum chamber by wear products.
- Membrane pumps are still known, but membranes have a short service life, or piston pumps, but they have poor performance and a high level of noise and vibration.
- a machine with planetary movement is also known, for example from document DE 42 09 607 which describes a rotary piston machine comprising a rotor which describes a planetary movement inside a stator: the axis of the rotor describes a circle while that it also rotates in opposite directions around its axis.
- the teeth of the rotor and the stator are of the cycloid type: epicycloids for the heads of the teeth of the rotor and the feet of teeth of the inside teeth of the stator and hypocycloids for the heads of teeth of the inside teeth of the stator and rotor tine feet.
- the planetary movement is obtained by direct contact between the rotor and the stator.
- this requires that the pumped fluid be lubricating.
- the profile of the rotor and the stator is complicated.
- the invention relates to a new type of dry primary pump which overcomes largely the problems and defects of known dry primary pumps. It is a volumetric machine with planetary and geometric hypertrochoidal movement.
- the machine comprises a cylindrical piston, a cylindrical capsule which surrounds it and a bent shaft whose axes are parallel to those of the cylinders defining the shape of the piston and the capsule, in rotoid connection with this piston and this capsule.
- the cylinder defining the shape of the piston has an order of symmetry with respect to its axis equal to S p , that of the capsule an order of equal symmetry to S c ; S p and S c are chosen so that these values differ by one.
- the geometry of the piston and of the capsule is chosen so that there is direct correspondence between these elements.
- One of the organs, capsule or piston has a profile P 1 which identifies with a curve uniformly distant from a closed hypertrochoid, having neither double point nor cusp, excluding hypertrochoids degenerated into hypotrochoids, epitrochoids or peritrochoids .
- the P 1 profile can also be at zero distance from such a hypertrochoid and therefore identify with it.
- the definition of hypertrochoids is specified in FR-A-2 203 421.
- the other organ has a profile P 2 which is the envelope of P 1 in a relative planetary movement defined by two circles C 1 and C 2 of centers and of respective radii (0 1 , R 1 ) and (0 2 , R 2 ), these circles C 1 and C 2 being respectively integral with the profiles P 1 and P 2 and rolling over one another without sliding by internal contact ,
- machines can be derived from machines belonging to one of the four preceding families. Indeed, one can use a profile P 2 of which at least part is identified with the envelope of P 1 in its movement relative to P 2 and of which at least a part is external to this envelope in the case of families I or II and is inside this envelope in the case of families III or IV, the different parts connecting to define a closed curve.
- the planetary movement of such machines can be achieved either by an internal gear with parallel axes, the wheels of which are respectively integral with the piston and the capsule and whose pitch radii are respectively equal to R 1 and R 2 , or, if the geometry of the surfaces of the piston and of the capsule which are in contact allows sufficient driving and if the fluid conveyed in the machine is sufficiently lubricating, then the gear can be eliminated and the relative planetary movement is directly imposed, during the drive in rotation of the bent shaft, by the piston-capsule contact.
- the machine has the disadvantage, like the machine of the document cited above, of not be perfectly dry, because it requires the presence of a gear for the planetary movement which must therefore be lubricated to allow lasting operation, or else the presence of a pumped lubricating fluid if the gear is removed and if the movement planetary is directly obtained by direct contact between the piston and the capsule. In certain applications where the vacuum must be very clean, this is unacceptable.
- the object of the present invention is to propose a machine as described above, but also making it possible to dispense with lubricant in the means used to generate the planetary movement of the machine.
- the invention thus relates to a volumetric machine comprising a cylindrical piston of axis ⁇ p , rotary and located in a cylindrical capsule of axis ⁇ c , characterized in that said piston has, in a plane perpendicular to its axis ⁇ p , a section of hypertrochoidal geometry having S p axes of symmetry, said capsule defining a hollow volume whose section by a plane perpendicular to its axis ⁇ c has a hypertrochoidal geometry having S c axes of symmetry, S p and S c differentiating d '' a unit, the axes ⁇ p and ⁇ c , parallel, being separated by a distance E, said piston being mounted, free to rotate about its axis ⁇ p , on a crank pin of axis ⁇ p secured to a shaft of axis ⁇ c supported by said capsule, said shaft being intended to be driven in rotation about its axis ⁇ c by
- the invention also relates to a volumetric machine comprising a cylindrical piston of axis ⁇ p , located in a cylindrical capsule of axis ⁇ c , characterized in that said piston has, in a plane perpendicular to its axis ⁇ p , a section of hypertrochoidal geometry having S p axes of symmetry, said capsule defining a hollow volume whose section, by a plane perpendicular to its axis ⁇ c , has a hypertrochoidal geometry having S c axes of symmetry, S p and S c differentiating d '' a unit, the axes ⁇ p and ⁇ c , parallel, being separated by a distance E, and in that said capsule is mounted, free in rotation, around its axis ⁇ c , on a crank pin of axis ⁇ c secured to a shaft with axis ⁇ p supported by bearings in a box enclosing said capsule, said box comprising
- FIGS 1, 2 and 3 show three possible profiles of piston and capsule according to the invention.
- FIGS. 4 and 5 show diagrammatically in two views, a machine according to the invention with piston and capsule profiles in accordance with FIG. 1.
- Figures 6 and 7 are two views similar to Figures 4 and 5 showing a variant.
- Figures 8 and 9 are also two views similar to Figures 4 and 5 showing another variant.
- FIG. 10 is a detail view showing a variant of FIGS. 8 and 9.
- Figures 11 and 12 show, in more detail, a concrete example of machines according to the invention, still in the case of profiles according to Figure 1 and according to the variant of Figure 10.
- Figure 12 is a section along XII- XII of figure 11.
- Figures 13 and 14 are another embodiment of a machine according to the invention, corresponding to the profiles of Figure 1, but in which the piston is fixed and where it is the capsule which performs a planetary movement around the piston axis.
- Figure 1 shows, in section, by a plane perpendicular to the axes ⁇ p and ⁇ c , parallel, of the piston 1 and the capsule 2, the profile of a piston and a capsule.
- FIGs 4 and 5 we will describe a machine according to the invention. These figures are simplified and in particular do not include the suction and discharge which are shown only in Figures 11 to 14. These Figures 4 and 5, as well as Figures 6 to 9, simplified, allow to understand the operation of the machine according to the invention and in particular the production relative planetary movement: either of the piston, Figures 4 to 12, or of the capsule, Figures 13 and 14.
- This piston is cylindrical with axis ⁇ p and it is located in a cylindrical capsule 2 with axis ⁇ c .
- These profiles P 1 and P 2 are hypertrochoidal profiles.
- the axes ⁇ p and ⁇ c are parallel and distant by a value E.
- the piston 1 is mounted to rotate freely, about its axis ⁇ p on a crank pin 4 by means of bearings 5 and 6.
- the crank pin 4 is integrally connected to a shaft 7 of axis ⁇ c supported by the capsule 2 by levels 8 and 9.
- the shaft 7 is rotated about its axis ⁇ c by a motor not shown.
- the axis ⁇ p of the pin 4 that is to say the piston 1 is rotated about the axis ⁇ c.
- the planetary movement of the piston 1 is caused by magnetic repulsion forces by means of permanent magnets located, on the one hand, on the surface of the piston 1 and on the other hand on the internal surface of the capsule 2.
- FIGS. 4 and 5 it is a question, both on the piston and on the capsule, of a plurality of magnets 10 and 11 respectively.
- these magnets are substantially polarized radially and in such a way that the poles of the same name are on the surface on the piston and the capsule so as to produce repulsion forces.
- the piston 1 and the capsule 2 define between them three chambers A, B and C which, each, during the planetary movement of the piston, increases and decreases alternately.
- each room is equipped with a suction inlet and a discharge outlet fitted with valves.
- Figures 6 and 7 show an example in which the permanent magnets are axially polarized in the same direction on the piston and the capsule so as to obtain repulsion forces.
- Figures 8 and 9 show another example in which the magnets 10 and 11 are replaced by magnetized strips 12 and 13 axially magnetized. These strips could also be magnetized radially. These magnetic strips 12 and 13 can be attached to the piston 1 and the capsule 2 and be glued to their surface.
- FIG. 10 is a partial sectional view showing a variant, not directly attaching the magnetic strips 12 and 13 to the surfaces of the piston and of the capsule, but proceeding by molding the magnetizable material containing a plastic binder.
- the magnetic strips 12 and 13 are not directly on the surface but, for the purposes of molding, in order to form formwork, slightly below this surface; there therefore remains a thin wall 14 and 15 respectively of the piston and of the capsule separating the two magnetic strips 12 and 13.
- Figures 11 and 12 show a more concrete machine than the previous ones with suction and discharge and in the case where the magnetic forces are created by two magnetic strips 12 and 13 which have been cast in accordance with Figure 10.
- the piston 1 is mounted by the bearings 5 and 6 on the crank pin 4 linked to a plate 16 itself secured to the shaft 7 which supports the assembly, cantilevered, by the bearings 8 and 9 mounted in part 2A of the capsule 2 in three parts 2A, 2B and 2C.
- the piston 1 is held by a screw 17 and a washer 18.
- the machine comprises three independent pumping chambers A, B and C, which each pulsate like a heart and which each comprise an inlet and outlet block 19 comprising a suction inlet 20, equipped with a valve 21, and a discharge outlet 22, fitted with a valve 23.
- the magnetic repulsive forces which angularly position the piston relative to the capsule axially generate an unstable equilibrium point is then carried out as follows: the two magnetic strips 12, 13 are offset very slightly, axially, one with respect to the other, with respect to their unstable equilibrium point, so to obtain an axial force in a determined direction which is then collected by the mounting of the prestressed bearings.
- the piston 1, outside the magnetic strip 12 and the capsule 2 in its three parts 2A, 2B and 2C, outside the magnetic strip 13, are made of non-magnetic material, aluminum for example, so as not to disturb the magnetic fields which position the piston relative to the capsule.
- FIGS. 13 and 14 show an example in which the piston 1 is fixed and where it is the capsule 2 which describes a planetary movement around the fixed axis ⁇ p of the fixed piston 1.
- the forces of Magnetic repellents are created by a plurality of permanent magnets 10 and 11 radially polarized, as in Figures 4 and 5.
- magnets axially polarized or two magnetic strips polarized axially or radially could be used.
- the capsule 2 is mounted to rotate freely around its axis ⁇ c on the crank pin 4 linked to the shaft 7, the axis ⁇ p of which is itself coaxial with the axis ⁇ p of the fixed piston 1.
- the shaft 7 is supported by bearings 8 and 9, mounted in a fixed box in two parts 24A and 24B.
- the box 24A, 24B encloses the capsule 2 in a circular cylindrical housing 25 of axis ⁇ p whose dimensions are sufficient to allow the planetary movement of the capsule 2 around the axis ⁇ p of the piston with sufficient play to avoid the contact.
- the capsule 2, housed in the box 24A-24B is open on a side face, and it is the part 24B of the box which encloses the capsule 2, the piston 1 being fixed to this part 24B by screws, axes 26 and 27.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Tires In General (AREA)
Claims (6)
- Volumetrische Maschine, die einen zylindrischen Kolben (1) mit der Achse Δp besitzt, der drehbar ist und in einer zylindrischen Kapsel (2) mit der Achse Δc liegt, dadurch gekennzeichnet, daß der Kolben in einer Ebene senkrecht zu seiner Achse Δp einen Querschnitt in Form einer hypertrochoidalen Geometrie mit Sp Symmetrieachsen besitzt, während die Kapsel ein Hohlvolumen (3) definiert, dessen Querschnitt in einer Ebene senkrecht zu ihrer Achse Δc eine hypertrochoidale Geometrie mit Sc Symmetrieachsen definiert, wobei Sp und Sc sich um eine Einheit unterscheiden, daß die Achsen Δp und Δc zueinander parallel in einem Abstand E verlaufen, daß der Kolben (1) frei um seine Achse Δp drehbar auf einer Kurbelwelle (4) montiert ist, deren Achse Δp mit einer Welle (7) der Achse Δc fest verbunden ist, die von der Kapsel (2) getragen wird, daß die Welle (7) um ihre Achse Δc durch einen Motor angetrieben werden kann, daß der Kolben und die Kapsel zwischen sich mindestens drei Kammern (A, B, C) begrenzen, und daß die Kapsel mindestens einen Saugeinlaß (20) und einen Auslaß (22) besitzt, und daß die Drehung des Kolbens (1) in seiner Planetenbewegung um die Achse Δc der Kapsel (2) durch magnetische Abstoßungskräfte (10, 11, 12, 13) mit Hilfe von Dauermagneten erzeugt wird, die einerseits auf der Oberfläche oder in der Nähe der Oberfläche des Kolbens und andererseits auf der Innenfläche oder in der Nähe der Innenfläche der Kapsel liegen.
- Volumetrische Maschine, die einen zylindrischen Kolben (1) mit einer Achse Δp besitzt, der in einer zylindrischen Kapsel (2) der Achse Δc liegt, dadurch gekennzeichnet, daß der Kolben in einer Ebene senkrecht zu seiner Achse Δp einen Querschnitt in Form einer hypertrochoidalen Geometrie mit Sp Symmetrieachsen besitzt, während die Kapsel (2) ein Hohlvolumen (3) definiert, dessen Querschnitt in einer Ebene senkrecht zu seiner Achse Δc eine hypertrochoidale Geometrie mit Sc Symmetrieachsen definiert, wobei Sp und Sc sich um eine einheit unterscheiden, daß die Achsen Δp und Δc zueinander parallel in einem Abstand E verlaufen, daß die Kapsel (2) frei drehbar um ihre Achse Δc auf einer Kurbelwelle (4) sitzt, deren Achse Δc mit einer Welle (7) einer Achse Δp fest verbunden ist, die auf Lagern (8, 9) in einem Gehäuse (24A, 24B) getragen wird, das die Kapsel umgibt, daß das Gehäuse einen kreisförmigen zylindrischen Innenraum (25) mit der Achse Δp besitzt, dessen Abmessungen für die freie Drehung der Kurbelwelle (4) um die Achse Δp der Welle (7) und die Planetenbewegung der Kapsel (2) um die Achse Δp ausreichen, daß die Kapsel (2) auf einer Seite offen ist und der Kolben auf dieser Seite ohne Bewegungsfreiheit an das Gehäuse angeschlossen ist, daß die Welle (7) um ihre Achse Δp durch einen Motor in Drehung versetzt werden kann, daß die Drehung der Kapsel in ihrer Planetenbewegung um die Achse Δp des Kolbens (1) durch magnetische Abstoßungskräfte mit Hilfe von Dauermagneten (10, 11) erzeugt wird, die einerseits auf der Oberfläche oder in der Nähe der Oberfläche des Kolbens und andererseits auf der Innenfläche oder in der Nähe der Innenfläche der Kapsel liegen, und daß der Kolben und die Kapsel zwischen sich mindestens drei Kammern (A, B, C) begrenzen, wobei eine Seite (24B) des Gehäuses mindestens einen Saugeinlaß (20) und einen Auslaß (22) besitzt, die in mindestens eine Kammer münden.
- Volumetrische Maschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Dauermagneten axial polarisiert sind.
- Volumetrische Maschine nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Dauermagneten radial polarisiert sind.
- Volumetrische Maschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Dauermagneten mehrere Einzelmagneten (10) auf dem Kolben und mehrere Einzelmagneten (11) auf der Innenfläche der Kapsel besitzen.
- Volumetrische Maschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Kolben ein magnetisches Band (12) trägt und daß die Kapsel ebenfalls ein magnetisches Band (13) trägt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9301926 | 1993-02-19 | ||
FR9301926A FR2701737B1 (fr) | 1993-02-19 | 1993-02-19 | Machine volumétrique à guidage magnétique. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0618365A1 EP0618365A1 (de) | 1994-10-05 |
EP0618365B1 true EP0618365B1 (de) | 1997-05-07 |
Family
ID=9444236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94400343A Expired - Lifetime EP0618365B1 (de) | 1993-02-19 | 1994-02-16 | Verdrängermaschine mit magnetischer Führung |
Country Status (6)
Country | Link |
---|---|
US (1) | US5439357A (de) |
EP (1) | EP0618365B1 (de) |
JP (1) | JPH06249173A (de) |
CA (1) | CA2114601A1 (de) |
DE (1) | DE69403020T2 (de) |
FR (1) | FR2701737B1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2202897A (en) * | 1996-03-06 | 1997-09-22 | Joseph B. Thompson | System for interconnecting standard telephony communications equipment to internet protocol networks |
DE29614108U1 (de) * | 1996-08-16 | 1997-12-11 | Klipstein, Thomas, Dipl.-Ing., 22359 Hamburg | Rotationskolbenmaschine bzw. Rotationskolbenpumpe |
US6174151B1 (en) | 1998-11-17 | 2001-01-16 | The Ohio State University Research Foundation | Fluid energy transfer device |
US6481975B1 (en) * | 2000-03-07 | 2002-11-19 | Motorola, Inc. | Gear pump and switch reluctance motor and method for pumping fluid |
MY142613A (en) * | 2003-08-27 | 2010-12-15 | Kcr Technologies Pty Ltd | Rotary mechanism |
KR100680775B1 (ko) * | 2004-09-24 | 2007-02-09 | 주식회사 원택 | 로터리 엔진 |
RU2322587C1 (ru) * | 2006-12-26 | 2008-04-20 | Сергей Иванович Нефедов | Устройство объемной машины (варианты) |
WO2011140358A2 (en) | 2010-05-05 | 2011-11-10 | Ener-G-Rotors, Inc. | Fluid energy transfer device |
US8714951B2 (en) * | 2011-08-05 | 2014-05-06 | Ener-G-Rotors, Inc. | Fluid energy transfer device |
ITFO20130004A1 (it) * | 2013-03-29 | 2014-09-30 | Hilaly Abdessamad El | Il motore rotativo a quattro lobi |
DE102014223142A1 (de) * | 2014-11-13 | 2016-05-19 | Robert Bosch Gmbh | Rotationskolbenmaschine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4209607A1 (de) * | 1992-03-25 | 1992-08-13 | Rolf Eckert | Rotationskolbenmaschine als brennkraftmaschine, expansionsmaschine oder verdichter |
Family Cites Families (25)
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FR383332A (fr) * | 1907-04-17 | 1908-03-05 | Cooley Dev Company | Machine rotative destinée à propulser un fluide ou à etre actionnée par lui |
US1849222A (en) * | 1929-03-07 | 1932-03-15 | Canton Refrigerators Inc | Combination motor and pump |
US2161374A (en) * | 1936-05-26 | 1939-06-06 | Moineau Rene Joseph Louis | Motor pump or electric generator |
US2561890A (en) * | 1945-07-25 | 1951-07-24 | George C Stoddard | Dynamoelectric machine |
US2761078A (en) * | 1952-03-29 | 1956-08-28 | Wetmore Hodges | Electrical motor pump or compressor |
US2703370A (en) * | 1952-07-02 | 1955-03-01 | Steensen Sverre Johan | Electric compressor or pump motor with rolling rotor |
US2965039A (en) * | 1957-03-31 | 1960-12-20 | Morita Yoshinori | Gear pump |
US3029738A (en) * | 1958-09-02 | 1962-04-17 | Borsig Ag | Control for rotary piston machines |
US3194165A (en) * | 1962-02-28 | 1965-07-13 | Sorlin Nils | Electric motor pump |
BE790122A (fr) * | 1972-10-13 | 1973-04-13 | Leroy A | Capsulisme hypertrochoidal a palettes. |
DE2405557A1 (de) * | 1974-02-06 | 1975-08-07 | Volkswagenwerk Ag | Rotationskolben-brennkraftmaschine |
US3932069A (en) * | 1974-12-19 | 1976-01-13 | Ford Motor Company | Variable reluctance motor pump |
US4111617A (en) * | 1975-09-25 | 1978-09-05 | Gale Richard A | Rotary piston mechanism |
CH612736A5 (de) * | 1976-04-27 | 1979-08-15 | Papst Motoren Kg | |
JPS57143185A (en) * | 1981-02-27 | 1982-09-04 | Mitsubishi Electric Corp | Rotary compressor |
DE3325017C2 (de) * | 1983-07-11 | 1985-11-28 | Continental Gummi-Werke Ag, 3000 Hannover | Preßkopf zum Herstellen von flachen zusammenhängenden Profilsträngen aus plastischen Kautschuk- oder Kunststoffmischungen verschiedener Zusammensetzung |
CH664604A5 (fr) * | 1985-11-25 | 1988-03-15 | Cerac Inst Sa | Machine rotative. |
US4721445A (en) * | 1986-12-31 | 1988-01-26 | Compression Technologies, Inc. | Outer envelope trochoidal rotary device having a rotor assembly having peripheral reliefs |
US4924180A (en) * | 1987-12-18 | 1990-05-08 | Liquiflo Equipment Company | Apparatus for detecting bearing shaft wear utilizing rotatable magnet means |
US4867652A (en) * | 1988-12-08 | 1989-09-19 | Carrier Corporation | Balanced rolling rotor motor compressor |
US4949022A (en) * | 1989-01-27 | 1990-08-14 | Lipman Leonard H | Solid state DC fan motor |
US5080562A (en) * | 1989-12-11 | 1992-01-14 | Carrier Corporation | Annular rolling rotor motor compressor with dual wipers |
US5145329A (en) * | 1990-06-29 | 1992-09-08 | Eaton Corporation | Homoplanar brushless electric gerotor |
US5127377A (en) * | 1990-12-06 | 1992-07-07 | Yang Chung Chieh | Rotary machine with oval piston in triangular chamber |
IT1245466B (it) * | 1991-03-19 | 1994-09-20 | Iveco Fiat | Elettropompa per la circolazione di un liquido, ad esempio in un motore a combustione interna |
-
1993
- 1993-02-19 FR FR9301926A patent/FR2701737B1/fr not_active Expired - Fee Related
-
1994
- 1994-01-31 CA CA002114601A patent/CA2114601A1/en not_active Abandoned
- 1994-02-03 US US08/190,983 patent/US5439357A/en not_active Expired - Fee Related
- 1994-02-16 DE DE69403020T patent/DE69403020T2/de not_active Expired - Fee Related
- 1994-02-16 EP EP94400343A patent/EP0618365B1/de not_active Expired - Lifetime
- 1994-02-17 JP JP6020617A patent/JPH06249173A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4209607A1 (de) * | 1992-03-25 | 1992-08-13 | Rolf Eckert | Rotationskolbenmaschine als brennkraftmaschine, expansionsmaschine oder verdichter |
Also Published As
Publication number | Publication date |
---|---|
FR2701737B1 (fr) | 1995-04-14 |
CA2114601A1 (en) | 1994-08-02 |
JPH06249173A (ja) | 1994-09-06 |
FR2701737A1 (fr) | 1994-08-26 |
EP0618365A1 (de) | 1994-10-05 |
DE69403020D1 (de) | 1997-06-12 |
DE69403020T2 (de) | 1997-08-14 |
US5439357A (en) | 1995-08-08 |
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