US2725013A - Rotary engine - Google Patents

Rotary engine Download PDF

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US2725013A
US2725013A US266515A US26651552A US2725013A US 2725013 A US2725013 A US 2725013A US 266515 A US266515 A US 266515A US 26651552 A US26651552 A US 26651552A US 2725013 A US2725013 A US 2725013A
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slots
socket
rotor
ports
engine
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US266515A
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Constantinos H Vlachos
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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
    • 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
    • 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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F01C1/3446—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 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 more than one line or surface
    • 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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F01C1/3446—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 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 more than one line or surface
    • F01C1/3447—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 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 more than one line or surface the vanes having the form of rollers, slippers or the like

Definitions

  • This invention relates to piston carriers, housings therefor and rotary engines.
  • One object of the invention is to provide a rotary engine which may effectively function as a motor, pump or compressor.
  • Rotary movement applied to the rotor performs the function of a pump or compressor, and uid under pressure when applied through inlet ports causes the engine to perform as a motor.
  • Another object of the invention lies in the provision of uid pressure means for shifting related parts of the engine into working position and thereby making compensation for any wear which may be present among the parts and thus maintain a perfect uid seal between working parts.
  • Another object of the invention lies in the provision of a new combination of pistons which enable the engine to be used as a motor, pump or compressor with no perceptible variation in efficiency.
  • Another object of the invention lies in the provision of an engine that is nearly silent in its operation and which may be run in either direction to perform the function required of it.
  • Another object of the invention lies in the provision of an engine which may be operated in any position with equal eiliciency.
  • Figure l is a side elevation of a rotary engine embodying my invention, l
  • Figure 2 is a central vertical longitudinal section through the same, as at line 2 2 of Figure 1, and,
  • Figure 3 is a vertical transverse section through the same.
  • An oblong socket 8 is formed in the body 5 from its front face 9 and extends longitudinally into the body terminating in a faced end wall 10.
  • the side walls 11 of socket 8 are also polished or faced to present a smooth working surface for the cooperating parts.
  • a bearing well 12 is formed coaxially of socket 8 and in end wall 10, and a bronze, or other type, bushing 13 is pressed therein to form a bearing for the rotor described hereafter.
  • Radially extending, internally threaded and diametrically opposed ports 14 are provided in the body 5 and cornmunicate with socket 8. Each port is spaced from its adjacent ports 90 degrees on centers, thus providing four of said ports.
  • socket 8 when the greatest transverse dimension of socket 8 is horizontal, the ports 14 are 2,725,013 Patented Nov. 29, 1955 ICC positioned 45 degrees above and below horizontal ones on each side of a longitudinal vertical plane.
  • socket 8 may be positioned at any angle desired and the ports will then be provided in the same position relative to the socket.
  • Piston carrier or rotor 15 is substantially circular in transverse cross section, as seen in Figure 3, and when positioned centric of socket 8, defines crescent shaped chambers 16 between the rotor and housing 4. Ports 14 thus open into socket 8 adjacent the extreme ends of chambers 16. It will be noted by the arrows of Figures 1 and 3 that the opposed ends of chambers 16 have opposite ports 14. That is, one end has an inlet port while the opposed end of the same chamber has an outlet port, and the opposed chambers 16 yon their corresponding upper or lower ends also have opposite ports.
  • socket 8 About the mouth of socket 8, l have provided a recess 20 in face 9, and a matching boss 21 carried by cover plate 22 is fitted therein.
  • a gasket or sealing ring 23 encircles the boss 21 and is clamped between face 9 and cover plate 22 to seal the socket against leaking.
  • the longitudinal movement of boss 21 into socket 8 is limited by reason of shoulders 24 defined by recess 20, thus providing a proper final longitudinal dimension for socket 8.
  • a bushing 25 is pressed into cover plate 22 coaxial with socket 8 and bearing well 12 and provides a bearing for shaft 26 of piston carrier or rotor 15.
  • a packing gland and nut 27 are provided to seal the shaft and cover plate and preclude fluid leaking therebetween.
  • Multiple stud bolts 28 pass through spaced openings in cover plate 22 and thread into housing 4 to secure the plate thereon.
  • hoses 29 are adapted with fittings 31 to attach the hoses to ports 14 and permit uid passage therethrough.
  • Rotor or pistou carrier 15 is provided with radially disposed longitudinally extending multiple slots about its periphery.
  • the rotor has a hub 31 and spaced on centers every 120 degrees about the periphery of the hub are outwardly divergent roller receiving slots 32 having tubular roller pistons 33 therein and positioned about the hub 60 degrees from slots 32 are vane receiving slots 34 also occurring every 120 degrees about the hub from each other.
  • Vane pistons 35 are carried by slots 34 and slidable therein. Positioned intermediate each piston receiving slot 32 and 34 I have provided compression slots 36.
  • stub shaft 37 adapted to rotatably fit in bearing 13, and a central bore 38 forms a conduit through the shaft 37 into the hub 31.
  • Radially extending conduits 39 communicate with central conduit 38 and at their outer ends communicate with the piston receiving slots 32 and 34 midway their lengths.
  • Fluid under pressure (from any source not shovsm) is introduced into the housing through ports 14 indicated by the arrows pointing inwardly.
  • a portion of the lluid passes through grooves 17 and conduits 18 and 19 to bearing well 12 where it ows into conduits 38-39 and forces pistons 33 and 35 outwardly to contact walls 11 of socket 8. Since the volume of uid entering is greater than that which willl pass through grooves 17, pressure is ⁇ exerted upon pistons 33 and 3S which are then positioned beyond the respective inlet ports and in chambers 16, thus causing the rotor to turn.
  • the movement of the rotor willbe in the clockwise direction as viewed in Figure 3'.
  • roller pistons 33 will not be in the positions shown in Figure 3, but rather shifted clockwise in socket 8 and positioned to bear against the opposite side of their respective slots from that side shown. To reverse the direction of the motor, it is only necessary to reverse the direction of fluid iiow and the motor will reverse.
  • the compression slots 36 provide greater area for creatingy a reduced pressure in the intake ports thus increasing the ability to pumpl and draw up its prime. It also provides a greater area within the housing for compression when the engine is so used. It isv not definitely known how the compression sl'ots Work to enhance the ability of the engine in its three functions, but working models have proven that such is the case.
  • a piston carrier having vane slots with parallel side faces, compression slots and roller slots having outwardly divergent side faces, and said slots being alternately positioned about the periphery of the piston carrier.
  • a piston carrier having vane slots with parallel side faces, and roller slots having outwardly divergent side faces, and said slots being alternately positioned about the periphery of the piston carrier.

Description

Nov. 29, 1955 C, H, VLACHOS 2,725,013
ROTARY ENGINE Filed Jan. l5, 1952 Gonsfan/hos H lilac/703 6 IN1/EN TOR.
United States Patent ROTARY ENGINE Constantinos H. Vlachos, Vancouver, Wash.
Application January 15, 1952, Serial No. 266,515
4 Claims. (Cl. 103-136) This invention relates to piston carriers, housings therefor and rotary engines.
One object of the invention is to provide a rotary engine which may effectively function as a motor, pump or compressor. Rotary movement applied to the rotor performs the function of a pump or compressor, and uid under pressure when applied through inlet ports causes the engine to perform as a motor.
Another object of the invention lies in the provision of uid pressure means for shifting related parts of the engine into working position and thereby making compensation for any wear which may be present among the parts and thus maintain a perfect uid seal between working parts.
Another object of the invention lies in the provision of a new combination of pistons which enable the engine to be used as a motor, pump or compressor with no perceptible variation in efficiency.
Another object of the invention lies in the provision of an engine that is nearly silent in its operation and which may be run in either direction to perform the function required of it.
Another object of the invention lies in the provision of an engine which may be operated in any position with equal eiliciency.
These and other objects and advantages of the invention will be apparent during the course of the following description.
In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,
Figure l is a side elevation of a rotary engine embodying my invention, l
Figure 2 is a central vertical longitudinal section through the same, as at line 2 2 of Figure 1, and,
Figure 3 is a vertical transverse section through the same.
Inspection of the drawing will reveal that the exemplied form of my invention has a cast housing 4 cornprising a body 5 and a base 6. The base is drilled and tapped to receive anchoring bolts 7 for mounting the engine for use.
An oblong socket 8 is formed in the body 5 from its front face 9 and extends longitudinally into the body terminating in a faced end wall 10. The side walls 11 of socket 8 are also polished or faced to present a smooth working surface for the cooperating parts. A bearing well 12 is formed coaxially of socket 8 and in end wall 10, and a bronze, or other type, bushing 13 is pressed therein to form a bearing for the rotor described hereafter.
Radially extending, internally threaded and diametrically opposed ports 14 are provided in the body 5 and cornmunicate with socket 8. Each port is spaced from its adjacent ports 90 degrees on centers, thus providing four of said ports.
As indicated in Figure 3, when the greatest transverse dimension of socket 8 is horizontal, the ports 14 are 2,725,013 Patented Nov. 29, 1955 ICC positioned 45 degrees above and below horizontal ones on each side of a longitudinal vertical plane. Of course, socket 8 may be positioned at any angle desired and the ports will then be provided in the same position relative to the socket.
Piston carrier or rotor 15 is substantially circular in transverse cross section, as seen in Figure 3, and when positioned centric of socket 8, defines crescent shaped chambers 16 between the rotor and housing 4. Ports 14 thus open into socket 8 adjacent the extreme ends of chambers 16. It will be noted by the arrows of Figures 1 and 3 that the opposed ends of chambers 16 have opposite ports 14. That is, one end has an inlet port while the opposed end of the same chamber has an outlet port, and the opposed chambers 16 yon their corresponding upper or lower ends also have opposite ports.
Between the ports of the corresponding ends of opposed chambers 16, I have provided by-pass grooves 17 which communicate with socket 8 throughout their length, and midway the length of said grooves, I have provided conduits 18 communicating with said grooves and extending longitudinally of the housing 4. Conduits 18 terminate at their rear ends in a vertically extending conduit 19 which communicates midway its length with the bearing Well 12.
About the mouth of socket 8, l have provided a recess 20 in face 9, and a matching boss 21 carried by cover plate 22 is fitted therein. A gasket or sealing ring 23 encircles the boss 21 and is clamped between face 9 and cover plate 22 to seal the socket against leaking. The longitudinal movement of boss 21 into socket 8 is limited by reason of shoulders 24 defined by recess 20, thus providing a proper final longitudinal dimension for socket 8. A bushing 25 is pressed into cover plate 22 coaxial with socket 8 and bearing well 12 and provides a bearing for shaft 26 of piston carrier or rotor 15. A packing gland and nut 27 are provided to seal the shaft and cover plate and preclude fluid leaking therebetween. Multiple stud bolts 28 pass through spaced openings in cover plate 22 and thread into housing 4 to secure the plate thereon.
As seen in Figure 1, hoses 29 are adapted with fittings 31 to attach the hoses to ports 14 and permit uid passage therethrough.
Rotor or pistou carrier 15 is provided with radially disposed longitudinally extending multiple slots about its periphery. As indicated in Figure 3 the rotor has a hub 31 and spaced on centers every 120 degrees about the periphery of the hub are outwardly divergent roller receiving slots 32 having tubular roller pistons 33 therein and positioned about the hub 60 degrees from slots 32 are vane receiving slots 34 also occurring every 120 degrees about the hub from each other. Vane pistons 35 are carried by slots 34 and slidable therein. Positioned intermediate each piston receiving slot 32 and 34 I have provided compression slots 36.
Centric of hub 31 and integral therewith, I have provided a stub shaft 37 adapted to rotatably fit in bearing 13, and a central bore 38 forms a conduit through the shaft 37 into the hub 31. Radially extending conduits 39 communicate with central conduit 38 and at their outer ends communicate with the piston receiving slots 32 and 34 midway their lengths.
The operation of the rotary engine as a motor is as follows:
Fluid under pressure (from any source not shovsm) is introduced into the housing through ports 14 indicated by the arrows pointing inwardly. A portion of the lluid passes through grooves 17 and conduits 18 and 19 to bearing well 12 where it ows into conduits 38-39 and forces pistons 33 and 35 outwardly to contact walls 11 of socket 8. Since the volume of uid entering is greater than that which willl pass through grooves 17, pressure is` exerted upon pistons 33 and 3S which are then positioned beyond the respective inlet ports and in chambers 16, thus causing the rotor to turn. The movement of the rotor willbe in the clockwise direction as viewed in Figure 3'. However, the roller pistons 33 will not be in the positions shown in Figure 3, but rather shifted clockwise in socket 8 and positioned to bear against the opposite side of their respective slots from that side shown. To reverse the direction of the motor, it is only necessary to reverse the direction of fluid iiow and the motor will reverse.
When operating the engine as a pump, rotary motion is applied to the rotor from a mechanical source. A portion of the fluid pressure created by the pump lows through the described conduits 18-19-38 and 39 to create a pressure behind the pistons and cause them to extend to the socket walls. The pistons create a reduced pressure in the intake ports and eliminate the necessity of priming the pump, and it is easily seen how the pistons pump the uid through the chambers 16- and out of the outlet ports 14.
It is theorized that the compression slots 36 provide greater area for creatingy a reduced pressure in the intake ports thus increasing the ability to pumpl and draw up its prime. It also provides a greater area within the housing for compression when the engine is so used. It isv not definitely known how the compression sl'ots Work to enhance the ability of the engine in its three functions, but working models have proven that such is the case.
Having thus described my invention, I claim:
1. A piston carrier having vane slots with parallel side faces, compression slots and roller slots having outwardly divergent side faces, and said slots being alternately positioned about the periphery of the piston carrier.
2'. The combination with a rotor having piston slots and compression slots, selected ones of said slots having parallel side faces and containing spaced vanes, other of said slots having outwardly divergent side faces and containing rollers alternately positioned about the periphery of said rotor with respect to said Vane slots, of a housing having an oblong socket containing the rotor and providing opposed chambers between the rotor and i the housing, and inlet and outlet ports in the housing communicating with said chambers.
3. A piston carrier having vane slots with parallel side faces, and roller slots having outwardly divergent side faces, and said slots being alternately positioned about the periphery of the piston carrier.
4. The combination with a rotor having piston slots, selective ones of said slots having parallel side faces and containing spaced vanes, other of said slots hav-ing outwardly divergent side faces and containing rollers alternately positioned about the periphery of said rotor with respect to said vane slots, of a housing having an oblong socket containing the rotor and providing opposed chambers between the rotor and the housing, and inlet and outlet ports in the housing communicating with said chambers.
References Cited in the file of this patent UNITED STATES PATENTS Re. 22,159 Centervall Aug. 18,` 1942 592,237 Closs Oct. 26, 1897 1,352,750 Jackson Sept. 14, 192.0 1,580,162 Peterson Apr. 13, 1926 1,635,006 Oliver July 5, 1927 1,669,779 Reavell May 15, 1928 1,965,388 Ott July 3, 1934 2,006,280 Schlueter June 25, 1935 2,141,171 Centervall Dec. 27, 19,38 2,159,941 Guinness May 23, 1939 2,193,178 Laythorpe Mar. 12, 1940 2,255,785 Kendrick Sept. 16, 19,41 2,312,891 Ferris Mar. 2, 1943 2,378,390 Bertea June 19, 1945 2,473,309 Stephens lune 14, 1949 2,589,449 Stageberg Mar. 18, 1952 2,631,544 Wilcox Mar. 117, 1953 2,641,193 Klessig June 9, 1953 2,660,123` Vlachos Nov. 24, 1953 FOREIGN PATENTS 442,746 Italy Nov. 30, 1948 509,694 Germany Oct. 11, 1930 518,564 France Ian. 6, 1921 844,907 France May 1, 1939
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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918877A (en) * 1954-07-02 1959-12-29 Woodcock Francis Henry Vane pumps
US2941479A (en) * 1955-04-01 1960-06-21 Oscar E Rosaen Fluid pumps or motors of the vane type
US2992616A (en) * 1956-07-02 1961-07-18 Arthur E Rineer Fluid power converter
US3008419A (en) * 1958-11-13 1961-11-14 Constantinos H Vlachos Combined motor and pump
US3016019A (en) * 1957-02-18 1962-01-09 Arthur E Rineer Fluid power converter
US3025802A (en) * 1957-04-08 1962-03-20 Eaton Mfg Co Rotary pump
US3136304A (en) * 1960-08-23 1964-06-09 Tauscher Henry Rotary power device
US3162141A (en) * 1962-10-04 1964-12-22 Constantinos H Vlachos Fluid flow device
US3216366A (en) * 1961-12-14 1965-11-09 Rederiaktiebolaget Soya Rolling-piston machine
US3299816A (en) * 1962-11-09 1967-01-24 Falls Stamping And Welding Com Pump
US3412685A (en) * 1966-09-16 1968-11-26 Eaton Yale & Towne Pump
FR2365043A1 (en) * 1976-09-17 1978-04-14 Plessey Handel Investment Ag Positive displacement pump with radial rollers - has variable pressure controlling movement of roller to regulate output
US4087215A (en) * 1976-07-16 1978-05-02 Trw Inc. Gerotor gearset device
US5030071A (en) * 1987-02-14 1991-07-09 Simpson Neil A A Roller van motor with fluid biassed roller
WO1992014037A1 (en) * 1991-02-02 1992-08-20 Roe, John, Richard, Neville Down-hole wing motor
WO1994001679A1 (en) * 1991-01-16 1994-01-20 Vaehaesalo Perttu Hydraulic motor
WO1994016198A1 (en) * 1993-01-07 1994-07-21 Grupping Arnold W Downhole roller vane motor and roller vane pump
US5518379A (en) * 1994-01-13 1996-05-21 Harris; Gary L. Downhole motor system
US5785509A (en) * 1994-01-13 1998-07-28 Harris; Gary L. Wellbore motor system
US5833444A (en) * 1994-01-13 1998-11-10 Harris; Gary L. Fluid driven motors

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US592237A (en) * 1897-10-26 Friedricii gloss
US1352750A (en) * 1918-01-19 1920-09-14 Jackson Compressor Company Rotary air-compressor
FR518564A (en) * 1918-05-27 1921-05-27 Gaston Ernest Samain Rotary machine for pump, motor, meter, fan, transmitter, etc.
US1580162A (en) * 1925-02-16 1926-04-13 Carl J Peterson Rotary pump
US1635006A (en) * 1925-10-07 1927-07-05 Oliver William Pump
US1669779A (en) * 1926-05-17 1928-05-15 Reavell William Rotary compressor, exhauster, and engine
DE509694C (en) * 1930-10-11 Knorr Bremse Akt Ges Rotary piston compressor with pistons displaceable in radial slots in the piston drum
US1965388A (en) * 1932-01-09 1934-07-03 Racine Tool & Machine Company Rotary pump
US2006280A (en) * 1933-03-23 1935-06-25 Theodore J Schlueter Pump for hydraulic drives
US2141171A (en) * 1936-06-25 1938-12-27 Manly Corp Rotary pump or motor
US2159941A (en) * 1933-09-11 1939-05-23 Fluvario Ltd Hydraulic machine
FR844907A (en) * 1938-10-18 1939-08-04 L Outil R B V Sa Rotary hydraulic pump, reversible as a motor
US2193178A (en) * 1940-03-12 Rotary internal combustion engine
US2255785A (en) * 1940-09-06 1941-09-16 Manly Corp Fluid pressure device
USRE22159E (en) * 1942-08-18 Rotary pimp or motor
US2312891A (en) * 1939-05-19 1943-03-02 Oilgear Co Hydrodynamic machine
US2378390A (en) * 1941-11-03 1945-06-19 Burwood Corp Pump
US2473309A (en) * 1945-11-02 1949-06-14 William T Stephens Rotary balanced vane pump
US2589449A (en) * 1943-10-15 1952-03-18 Sterling O Stageberg Movable vane pump
US2631544A (en) * 1946-06-11 1953-03-17 Technical Instr Lab Rotary vane pump
US2641193A (en) * 1950-10-19 1953-06-09 Vickers Inc Power transmission
US2660123A (en) * 1952-08-11 1953-11-24 Constantinos H Vlachos Thermohydraulic power converter

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2193178A (en) * 1940-03-12 Rotary internal combustion engine
DE509694C (en) * 1930-10-11 Knorr Bremse Akt Ges Rotary piston compressor with pistons displaceable in radial slots in the piston drum
USRE22159E (en) * 1942-08-18 Rotary pimp or motor
US592237A (en) * 1897-10-26 Friedricii gloss
US1352750A (en) * 1918-01-19 1920-09-14 Jackson Compressor Company Rotary air-compressor
FR518564A (en) * 1918-05-27 1921-05-27 Gaston Ernest Samain Rotary machine for pump, motor, meter, fan, transmitter, etc.
US1580162A (en) * 1925-02-16 1926-04-13 Carl J Peterson Rotary pump
US1635006A (en) * 1925-10-07 1927-07-05 Oliver William Pump
US1669779A (en) * 1926-05-17 1928-05-15 Reavell William Rotary compressor, exhauster, and engine
US1965388A (en) * 1932-01-09 1934-07-03 Racine Tool & Machine Company Rotary pump
US2006280A (en) * 1933-03-23 1935-06-25 Theodore J Schlueter Pump for hydraulic drives
US2159941A (en) * 1933-09-11 1939-05-23 Fluvario Ltd Hydraulic machine
US2141171A (en) * 1936-06-25 1938-12-27 Manly Corp Rotary pump or motor
FR844907A (en) * 1938-10-18 1939-08-04 L Outil R B V Sa Rotary hydraulic pump, reversible as a motor
US2312891A (en) * 1939-05-19 1943-03-02 Oilgear Co Hydrodynamic machine
US2255785A (en) * 1940-09-06 1941-09-16 Manly Corp Fluid pressure device
US2378390A (en) * 1941-11-03 1945-06-19 Burwood Corp Pump
US2589449A (en) * 1943-10-15 1952-03-18 Sterling O Stageberg Movable vane pump
US2473309A (en) * 1945-11-02 1949-06-14 William T Stephens Rotary balanced vane pump
US2631544A (en) * 1946-06-11 1953-03-17 Technical Instr Lab Rotary vane pump
US2641193A (en) * 1950-10-19 1953-06-09 Vickers Inc Power transmission
US2660123A (en) * 1952-08-11 1953-11-24 Constantinos H Vlachos Thermohydraulic power converter

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918877A (en) * 1954-07-02 1959-12-29 Woodcock Francis Henry Vane pumps
US2941479A (en) * 1955-04-01 1960-06-21 Oscar E Rosaen Fluid pumps or motors of the vane type
US2992616A (en) * 1956-07-02 1961-07-18 Arthur E Rineer Fluid power converter
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