One Working Chamber Stage Encircles Another Patents (Class 418/6)
  • Patent number: 11619133
    Abstract: A rotational engine system comprises a rotational engine and a propulsion system. The rotational engine includes an outer ring enclosure, an inner ring component, and a drive gear. The inner ring component includes a piston and a drive gear engagement portion. The piston is configured to travel within the outer ring enclosure along a circumference of the outer ring enclosure. The drive gear engagement portion is configured to rotate as the piston travels along the circumference of the circular shape of the outer ring enclosure. The drive gear is coupled to the drive gear engagement portion of the inner ring component such that rotation of the drive gear engagement portion rotationally drives the drive gear. The propulsion system is configured to deliver propulsive energy to propel the piston along the circumference of the outer ring enclosure.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: April 4, 2023
    Assignee: Duplicent, LLC
    Inventor: Curren Emmett Krasnoff
  • Patent number: 11242853
    Abstract: A pump as provided includes an inlet, an outlet, and a scroll pumping element. The scroll pumping element includes a fixed scroll component having one or more fixed scrolls and orbiting scroll component having one or more orbiting scrolls for fluid pumping. The fixed scroll component and the orbiting scroll component are arranged so as to be capable of providing pressurized fluid to a thrust bearing and prevent contact between the fixed scroll component and the orbiting scroll component.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: February 8, 2022
    Assignee: TIAX LLC
    Inventor: John Dieckmann
  • Patent number: 9297384
    Abstract: The present invention relates to a scroll pump with two scrolls that are co-operable for pumping fluid from an inlet to an outlet on relative orbiting motion of the scrolls. Each scroll comprises a scroll base from which a scroll wall extends generally axially towards the base of the opposing scroll. A gas conduit having an inlet at a first location of the pumping channel and an outlet at a second location of the pumping channel allows over-compression at the first location of the pumping channel to be exhausted to the second location of the pumping channel. A one-way valve located in the gas conduit allows the passage of gas through the conduit from the conduit inlet to the conduit outlet when a predetermined pressure differential between the first and second locations of the pumping channel is generated during roughing when the scroll inlet is at or close to atmosphere.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: March 29, 2016
    Assignee: Edwards Limited
    Inventors: Ian David Stones, Miles Geoffery Hockliffe, Alan Ernest Kinnaird Holbrook
  • Patent number: 9297381
    Abstract: The present invention is a scroll pump comprising two intermeshing scrolls arranged so that on relative orbital movement of the scrolls gas is pumped from an inlet to an outlet. The scrolls have a plurality of successive scroll wraps I, II, II, IV, V, VI between the inlet and the outlet. There is a single-start condition in which fluid is pumped from the inlet to the outlet along a single flow path extending through each of the scroll wraps in succession and a multi-start condition in which fluid is pumped from the inlet along a plurality of flow paths which extend in parallel through radially adjacent scroll wraps and converge to a single flow path prior to the outlet. A valve arrangement is operable for switching the scroll pump between the single-start and the multi-start conditions.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: March 29, 2016
    Assignee: Edwards Limited
    Inventors: Alan Ernest Kinnaird Holbrook, Miles Geoffery Hockliffe
  • Patent number: 8985974
    Abstract: Disclosed is a vane compressor in which cylinders concentrically formed at the side of a rotor are eccentrically inserted in ring-shaped spaces between cylindrical parts concentrically formed at the side of a stator. A pair of radially extending vane attachment grooves is formed in the rotor, and vanes are slidably attached in the vane attachment grooves. Compression chambers the volumes of which repeatedly increase and decrease with each rotation of the rotor are concentrically formed in multiple stages by the cylindrical parts of the stator, the cylinders of the rotor, and comb-tooth parts of the vanes. It is possible to realize a vane compressor in which compression chambers can be concentrically arranged in multiple stages in a simple structure by suppressing increase in the number of components to the minimum level.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: March 24, 2015
    Assignee: Kashiyama Industries, Ltd.
    Inventors: Osamu Ozawa, Shuzo Tsutsumi
  • Publication number: 20120251368
    Abstract: The present invention provides a positive displacement dry pump comprising: a plurality of vacuum pumping stages comprising a respective plurality of pumping mechanisms driven by one or more drive shafts for pumping fluid in series through the pumping stages from a pump inlet at the high vacuum stage to a pump outlet at the low vacuum stage; a lubrication chamber housing a bearing assembly for supporting the drive shaft for rotational movement, the drive shaft extending from the high vacuum stage to the lubrication chamber through an opening of a head plate of the lubrication chamber; an inter-stage purge port through which gas can enter the pump at an inter-stage location downstream of the high vacuum stage and pass only through the or each vacuum pumping stage downstream of the inter-stage port; a lubrication chamber purge port located in the lubrication chamber through which purge gas can flow from a source of purge gas; wherein the inter-stage port is connected to the lubrication chamber for controlling t
    Type: Application
    Filed: November 23, 2010
    Publication date: October 4, 2012
    Applicant: EDWARDS LIMITED
    Inventors: Philip John Stephens, Ian David Stones, Malcolm William Gray, Paul David Neller
  • Patent number: 7419371
    Abstract: In a scroll fluid machine, a driving shaft extends axially to allow an orbiting scroll to revolve with respect to a fixed scroll thereby compressing a gas introduced from the outer circumference of the fixed scroll in a compressing chamber formed between the orbiting and fixed scrolls. From one end of the driving shaft, external air is introduced in a cooling hole extending axially of the driving shaft to cool the driving shaft. A cooling fan is rotatably secured at one end of the driving shaft to rotate by the driving shaft to cool the fixed scroll. The cooling fan comprises a base plate having a main fin on one side surface facing the side of the fixed scroll and a plurality of auxiliary fins on the other side surface to prevent cooling-finished air from invading into the cooling hole of the driving shaft.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: September 2, 2008
    Assignee: Anest Iwata Corporation
    Inventors: Naohiro Minekawa, Masatomo Tanuma, Yuki Takada, Minako Toda
  • Patent number: 7364417
    Abstract: Disclosed herein is a compression unit of an orbiting vane compressor having improved tight contact between a circular vane and sealing means wherein the sealing means can be easily manufactured. The compression unit compresses refrigerant gas introduced by an orbiting movement of a circular vane in an annular space defined between the inner wall of a cylinder and an inner ring. The compression unit comprises a first horizontal contact surface formed at the outer circumferential surface of the inner ring, a second horizontal contact surface formed at the inner wall of the cylinder while being parallel with the first horizontal contact surface, and a linear slider disposed in an opening formed at the circular vane for performing a linear reciprocating movement along the first and second horizontal contact surfaces.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: April 29, 2008
    Assignee: LG Electronics Inc.
    Inventors: Seon-woong Hwang, Dong-won Yoo
  • Patent number: 7086844
    Abstract: To provide a seal configuration which prevents leakage of high pressure compressed fluid from a succeeding stage compression section to a preceding stage compression section of a multistage compression type fluid machine, a seal element 25 is located on the rand 9a between the discharge port 2e located at the end of the spiral lap groove of the preceding stage compression section and the suction port 2f located at the start of the spiral lap groove of the succeeding stage compression section to suck in the compressed fluid discharged from said discharge port and cooled through passing a cooler.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: August 8, 2006
    Assignee: Anest Iwata Corporation
    Inventors: Hideyuki Kimura, Atsushi Unami
  • Patent number: 7001161
    Abstract: To offer the seal configuration which prevents the leakage of high pressure compressed fluid from the succeeding stage compression section to the preceding stage compression section of a multistage compression type fluid machine, a seal element 25 is located on the rand 9a between the discharge port 2e located at the end of the spiral lap groove of the preceding stage compression section and the suction port 2f located at the start of the spiral lap groove of the succeeding stage compression section to suck in the compressed fluid discharged from said discharge port and cooled through passing a cooler.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: February 21, 2006
    Assignee: Anest Iwata Corporation
    Inventors: Hideyuki Kimura, Atsushi Unami
  • Patent number: 6922999
    Abstract: A single-winding multi-stage expander comprises a fixed scroll and an orbiting scroll which revolves eccentrically with respect to the fixed scroll so as to pressurize a sealed chamber formed between the two scrolls to drive a crankshaft. A high-temperature pressurized gas is introduced into a first-stage inner division and sent to an external heater. The heated gas is sent back to a second-stage outer division of the expander to significantly increase efficiency thereof.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: August 2, 2005
    Assignee: Anest Iwata Corporation
    Inventors: Hideyuki Kimura, Yutaka Kenmochi
  • Patent number: 6764288
    Abstract: Vacuum pumping apparatus includes a scroll set having an inlet and an outlet. The scroll set includes a first stationary scroll blade and a second stationary scroll blade extending from a stationary plate and separated by a gap, and an orbiting scroll extending from an orbiting plate, wherein the first and second stationary scroll blades are intermeshed with the orbiting scroll blade to define one or more interblade pockets. The vacuum pumping apparatus further includes a relief port in the gap between the first and second stationary scroll blades and coupled through a relief passage to an exhaust, a relief valve in the relief passage, and a drive mechanism operatively coupled to the orbiting scroll element for producing orbiting motion of the orbiting scroll blade relative to the first and second stationary scroll blades.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: July 20, 2004
    Assignee: Varian, Inc.
    Inventors: Anthony G. Liepert, Jeffrey C. Warren, Robert M. Curry, Jr.
  • Patent number: 6736620
    Abstract: A scroll fluid machine comprises a stationary scroll that has a spiral stationary wrap, and an orbiting scroll that has a spiral orbiting wrap to form a compression chamber between the stationary and orbiting wraps. In the stationary and orbiting wraps, an outer low-pressure pressurizing portion is separated from an inner high-pressure pressurizing portion. A plurality of outlets and inlets are formed in the low-pressure and high-pressure pressurizing portions respectively. At least one of the outlets or at least one of inlets is selectively closed.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: May 18, 2004
    Assignee: Anest Iwata Corporation
    Inventor: Tohru Satoh
  • Patent number: 6682328
    Abstract: To offer the seal configuration which prevents the leakage of high pressure compressed fluid from the succeeding stage compression section to the preceding stage compression section of a multistage compression type fluid machine, a seal element is located on the rand between the discharge port 2e located at the end of the spiral lap groove of the preceding stage compression section and the suction port 2f located at the start of the spiral lap groove of the succeeding stage compression section to suck in the compressed fluid discharged from said discharge port and cooled through passing a cooler.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: January 27, 2004
    Assignee: Anest Iwata Corporation
    Inventors: Hideyuki Kimura, Atsushi Unami
  • Patent number: 6658866
    Abstract: A scroll expresser of a refrigerant system includes a non-orbiting expander scroll plate and an orbiting expander scroll plate which form a plurality of expansion chambers and a non-orbiting compressor scroll plate and a orbiting compressor scroll plate which form a plurality of compression chambers. The scroll expresser expands high pressure refrigerant in the expansion chambers to low pressure vapor refrigerant and liquid refrigerant. The liquid refrigerant exits the scroll expresser for evaporation. The vapor refrigerant is compressed in the compression chambers and mixes with the refrigerant exiting the compressor. Alternatively, the orbiting scroll plates are integrated into one component.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: December 9, 2003
    Assignee: Carrier Corporation
    Inventors: Yan Tang, James W. Bush
  • Patent number: 6659743
    Abstract: The present invention has an object of offering a scroll fluid machine having a multi-stage compressing part which is characterized in that volumes of a sealed spaces is less scattering thereof corresponding to the given angle rotational amount of the revolving scroll driving shaft.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: December 9, 2003
    Assignee: Anest Iwata Corporation
    Inventors: Hideyuki Kimura, Atsushi Unami
  • Patent number: 6607371
    Abstract: Expansible chamber apparatus for a positive displacement, high volume, low friction, reversible rotary pump for gases and/or liquids. Two or more chambers are provided, defined in part by one or more small abutments that move radially in a slot to switch or redirect fluid flow with minimal loss of fluid mechanical energy. A complementary pair of chambers, formed by a single groove, is radially divided by a concentric land ring and is longitudinally segmented by the abutment, which seals the chambers against reverse leakage. The abutment is slightly smaller in radial dimension than the groove and is floated to avoid hard contact with the inner and outer land ring surfaces of the groove by a balancing of the Bernoulli effects that develop. The apparatus can also be operated as a fluid compressor, as a motor and in other applications, in single cycle or multiple cycle operation. The pump provides substantially non-pulsating fluid flow in one or more stages.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: August 19, 2003
    Inventors: Charles D. Raymond, William W. Eschenbach
  • Publication number: 20030063990
    Abstract: To offer the seal configuration which prevents the leakage of high pressure compressed fluid from the succeeding stage compression section to the preceding stage compression section of a multistage compression type fluid machine, a seal element 25 is located on the rand 9a between the discharge port 2e located at the end of the spiral lap groove of the preceding stage compression section and the suction port 2f located at the start of the spiral lap groove of the succeeding stage compression section to suck in the compressed fluid discharged from said discharge port and cooled through passing a cooler.
    Type: Application
    Filed: November 7, 2002
    Publication date: April 3, 2003
    Inventors: Hideyuki Kimura, Atsushi Unami
  • Patent number: 6425744
    Abstract: A helical blade type compressor is comprising a stationary cylindrical body, a closed-ended cylinder eccentrically arranged surrounding the cylindrical body, a helical compression section including a helical blade serving to divide the free space between the closed-ended cylinder and the cylindrical body into a plurality of compression chambers arranged in the axial direction of the cylindrical body, and a rotary shaft serving to eccentrically rotate the cylinder surrounding the cylindrical body, wherein a helical blade groove is formed on the circumferential surface of the cylindrical body and the helical blade is engaged with the helical groove such that an object fluid is moved in the axial direction of the cylindrical body so as to be compressed in accordance with the eccentric rotation of the cylinder.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: July 30, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masao Ozu, Takayoshi Fujiwara, Tetsuo Fukuda
  • Publication number: 20010026765
    Abstract: A helical blade type compressor is comprising a stationary cylinder, a roller eccentrically arranged within the cylinder, a helical compression section including a helical blade serving to divide the free space between the roller and the cylinder into a plurality of compression chambers arranged in the axial direction of the cylinder, and a rotary shaft serving to eccentrically rotate the roller within the cylinder, wherein a helical blade groove is formed on the inner circumferential surface of the cylinder and the helical blade is engaged with the helical groove such that an object fluid is moved in the axial direction of the cylinder so as to be compressed in accordance with the eccentric rotation of the roller.
    Type: Application
    Filed: April 30, 2001
    Publication date: October 4, 2001
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Masao Ozu, Takayoshi Fujiwara, Tetsuo Fukuda
  • Patent number: 6203301
    Abstract: Disclosed is a fluid pump comprising: a camshaft eccentrically connected to a rotating shaft of a motor to be eccentrically rotated by rotation of the motor; a rotor coupled to three crankshafts to revolve along a predetermined orbit by eccentric rotation of the camshaft, the rotor having a concave groove which is formed in a radial direction; an outer casing cooperating with the rotor to define a first fluid chamber between an outer wall of the rotor and the outer casing, the outer casing having a pair of fluid passages which are defined at both sides of a guide bank to allow fluid to be sucked and discharged therethrough, respectively; a side cover coupled to the outer casing to define a body of the fluid pump; an inner casing integrally formed with the side cover, the inner casing cooperating with the rotor to define a second fluid chamber between an inner wall of the rotor and the inner casing; the three crankshafts disposed in the outer casing and locked to the rotor inside of the inner wall of the rotor
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: March 20, 2001
    Inventor: Chun Kyung Kim
  • Patent number: 6089830
    Abstract: A multiple stage rotary compressor having a housing with a pump cavity and an orbiting ring piston in the cavity. A cylindrical post carried by the housing within the orbiting ring. A pair of vanes engaging the outer surface of the orbiting ring to define first-stage having a pair of primary pumping chambers in the cavity. A second pair of internal vanes contacting the inner surface of the orbiting ring to define a second-stage having a pair of secondary pumping chambers. A capacity control mechanism applied to the first-stage operative to limit the compressor capacity to the second-stage only. A second capacity control mechanism applied to the second-stage operative to variably bypass second-stage discharge to second-stage suction. The plurality of capacity controllers operating to establish varying compressor pump capacity depending upon the operating requirements of the compressor.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: July 18, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventors: Shane Anthony Harte, Lavlesh Sud, Ronald J. Mangiapane, Guntis Viktors Strikis
  • Patent number: 6079952
    Abstract: A control strategy for a multiple stage rotary compressor having compressive capacity output based on the demand of an air conditioning system. The constant variance in capacity to meet demand is obtained by recirculation of the multiple stages. Capacity is reduced to less than full capacity by recirculating the output of each stage back to the input of that particular stage. Capacity is increased up to full capacity by decreasing recirculation of the output of each stage back to the input of that particular stage. Additional stages and or portions operate in the same manner and provide further recirculation variability to provide a recirculation schedule based on demand.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: June 27, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventors: Shane Anthony Harte, Lavlesh Sud, Yong Huang
  • Patent number: 6050792
    Abstract: A scroll is provided which can be operated as either a vacuum pump, a low pressure compressor or a high pressure compressor. The scroll includes a housing, a fixed scroll plate having a continuous fixed involute wrap and an orbiting scroll plate having a continuous orbiting involute wrap. The wraps are of constant width and pitch. The fixed and orbiting scroll plates are mounted in the housing with their involute wraps extending toward each other to define a series of chambers. The fixed involute wrap and orbiting involute wrap each have at least a first section of one height and a second section of a second different height. Additionally, the scroll includes a first port proximate a peripheral edge of the housing, a second port proximate the center of the housing, and at least one mid-port; the mid-port being located proximate the change in height between the first and second sections of the involute wraps.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: April 18, 2000
    Assignee: Air-Squared, Inc.
    Inventor: Robert W. Shaffer
  • Patent number: 5871342
    Abstract: A variable capacity rotary compressor (12) having a housing (14) with a cylindrical chamber (16) and an orbiting ring piston (26) in the chamber. A pair of outer vanes (20) slidably mount in the housing and are biased into engagement with the orbiting ring (26), forming a pair of gas chambers (27). A pair of vane deactivation assemblies (52) each include a deactivation pin (58) which engages a deactivation recess (60) in its respective outer vane (20) when a corresponding one or both solenoid actuators (54) are energized. The pins (58) hold the outer vanes (20) in a retracted position out of contact with the orbiting ring (26), thus reducing the capacity of the compressor (12). Each outer vane (20) includes a slotted recess (62) adjacent to its deactivation recess (60) in order to allow for plastic yielding of the vane (20) behind the deactivation recess (60) without the yielded material interfering with the sliding motion of the outer vanes (20) relative to the walls of corresponding vane slots (18).
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: February 16, 1999
    Assignee: Ford Motor Company
    Inventors: Shane Anthony Harte, Vipen Kumar Khetarpal, Guntis Viktors Strikis
  • Patent number: 5855474
    Abstract: A two-stage rotating vane device comprising an outer stator defining a plurality of ports and an elliptically or cylindrically shaped interior cavity surface, with an inner stator defining a plurality of ports, the inner stator either being elliptically shaped or configured in a predetermined shape and located in the elliptically or cylindrically shaped interior cavity. A rotor is disposed in the elliptically or cylindrically shaped interior cavity between the interior cavity surface of the outer stator and the inner stator, the rotor defining a plurality of slots. A plurality of slidable vanes are situated in the plurality of slots for spanning between the interior cavity surface of the outer stator and the inner stator, and wherein a first stage is defined between the inner stator and the rotor, and a second stage is defined between the interior cavity surface of the outer stator and the rotor, the first and second stages communicating with each other.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: January 5, 1999
    Inventor: Ahmad R. Shouman
  • Patent number: 5626469
    Abstract: A vacuum pump of the scroll type having first and second scroll components each having a scroll structure defined thereon. The scroll components are arranged in the pump such that the respective scroll structures inter-engage with the first scroll component being held stationary and the second scroll component orbiting the first scroll component to trap a volume of gas and urge the volume from one end of the respective scroll structures to the other end. The first and second scroll components define inter-engaging scroll structures having an initial multi-start portion including at least two pump inlets and a subsequent single-start portion including a pump outlet.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: May 6, 1997
    Assignee: The BOC Group plc
    Inventor: Nigel P. Schofield
  • Patent number: 5597295
    Abstract: A multiple rotary fluid machine which includes a stator and a plurality of coaxial rotors held together, sealing vanes and fluid ports which are all offset alternately in the radial plane and form a multiplicity of rotary fluid machines or stages which are dislocated in the radial plane with respect to each other such that the total flow or torque produced by the multiple fluid machine is uniform at any time in the operating cycle or vary during the working cycle in any predestined manner.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: January 28, 1997
    Inventor: Alexander G. Pipaloff
  • Patent number: 5472327
    Abstract: A rotary compressor having a housing with a pump cavity, an orbiting ring piston in the cavity, a cylindrical post carried by the housing within the orbiting ring, at least one pair of vanes engaging the orbiting ring to define pumping chambers in the cavity, a pair of primary fluid inlet passages communicating with the working pressure chamber during expansion of the pressure chamber, a pair of fluid outlet ports communicating with the working chambers as the volume of the working chambers contracts upon rotation of the orbiting ring piston, and a pair of secondary fluid inlet ports in parallel disposition with respect to the primary ports formed in a valve plate adjacent the orbiting ring piston whereby the orbiting ring piston registers with the ports and opens and closes the ports in synchronism with the opening end and closing of the main ports whereby the effective inlet flow capacity for the fluid into the expanding working chamber is increased.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: December 5, 1995
    Assignee: Ford Motor Company
    Inventors: Guntis V. Strikis, Vipen K. Khetarpal, Victor G. Filipenco
  • Patent number: 5399076
    Abstract: A rolling piston type compressor of a simplified design having a single rolling piston, capable of reducing a variation in torque. The compressor has a housing in which a rolling piston 42 is arranged so that an orbital movement of the rolling piston is obtained about the axis of a crankshaft 5, so that a first operating chamber 40 is formed between the rolling piston 42 and the housing. A cylindrical pillar 47 which is stationary is arranged in the rolling piston, so that a second operating chamber is formed between the rolling piston and the pillar. The medium compressed in the first operating chamber is introduced into the second operating chamber for obtaining two step compression.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: March 21, 1995
    Assignees: Nippondenso Co., Ltd., Nippon Soken Inc.
    Inventors: Mikio Matsuda, Mitsuo Inagaki, Hiroshi Ogawa, Hideaki Sasaya
  • Patent number: 5375985
    Abstract: A multiple rotary fluid machine which includes a stator and a plurality of coaxial rotors held together, sealing vanes and fluid ports which are all offset alternately in the radial plane and form a multiplicity of rotary fluid machines or stages which are dislocated in the radial plane with respect to each other such that the total flow or torque produced by the multiple fluid machine is uniform at any time in the operating cycle or vary during the working cycle in any predestined manner.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: December 27, 1994
    Inventor: Alexander G. Pipaloff
  • Patent number: 5370511
    Abstract: A clutch apparatus for a rotary compressor for an air conditioning system is disclosed including a crankshaft, an eccentric for engaging an orbiting ring within the compressor, and a plunger disposed within the crankshaft. The apparatus further includes a device for axially reciprocating the plunger in the crankshaft so as to cause engagement and disengagement of the plunger into the eccentric whereby the crankshaft transmits torque to the eccentric to rotate the orbiting ring within the compressor.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: December 6, 1994
    Assignee: Ford Motor Company
    Inventors: Guntis V. Strikis, Vipen K. Khetarpal
  • Patent number: 5346374
    Abstract: A rotating spiral pump comprises a housing in which two displacement disks are rotatably disposed. The two displacement disks are provided on one side with ribs that extend in spiral fashion and interlock for the purpose of forming pumping chambers, and seal against the opposite displacement disk with their free face ends. The spirally extending ribs are embodied in several steps. The plurality of steps are spatially separated from each other by the formation of an space, and the radially outer step has at least twice as many pumping chambers as the radially inner step. Cooling means in the form of cooling ribs are preferably provided in the space, between the outlet of the radially outer step and the inlet of the radially inner step.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: September 13, 1994
    Assignee: Aginfor AG fur Industrielle Forschung
    Inventor: Heinrich Guttinger
  • Patent number: 5284426
    Abstract: A multiple stage rotary compressor having a housing with a pump cavity, an orbiting ring piston in the cavity, a cylindrical post carried by the housing within the orbiting ring, a pair of vanes engaging the outer surface of the orbiting ring to define a pair of primary pumping chambers in the cavity and a second pair of internal vanes contacting the inner surface of the orbiting ring to define a pair of secondary pumping chambers and a capacity controller adapted to selectively disable each of the outer vanes to establish differing compressor pump capacities depending upon the operating requirements of the compressor.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: February 8, 1994
    Assignee: Ford Motor Company
    Inventors: Guntis V. Strikis, Vipen K. Khetarpal
  • Patent number: 5135368
    Abstract: A gas compressor includes a housing defining a compression chamber, a crankshaft having an eccentric surface radially offset from the axis of rotation of the crankshaft, an orbiting ring rotatably mounted on the eccentric for rotation about an axis offset from the shaft axis, a cylindrical post coaxial with the axis of the housing passages for carrying gas to and from the compression chamber, vanes movable radially with respect to the orbiting ring, and pressure sensitive valves that open exhaust passages from the compression chamber. The orbiting ring rotates in continual contact with the inner surface of the housing and the outer surface of the cylindrical post. Compression occurs within a first stage space and a second stage space, each space divided into compression chambers by the sliding vanes and contact between the ring and post or between the ring and housing.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: August 4, 1992
    Assignee: Ford Motor Company
    Inventors: Jayendra J. Amin, Guntis V. Strikis, Vipen K. Khetarpal
  • Patent number: 5015161
    Abstract: A gas compressor includes a housing defining a compression chamber, a crankshaft having an eccentric surface radially offset from the axis of rotation of the crankshaft, an orbiting ring rotatably mounted on the eccentric for rotation about an axis offset from the shaft axis, a cylindrical post coaxial with the axis of the housing passages for carrying gas to and from the compression chamber, vanes movable radially with respect to the orbiting ring, and pressure sensitive valves that open exhaust passages from the compression chamber. The orbiting ring rotates in continual contact with the inner surface of the housing and the outer surface of the cylindrical post. Compression occurs within a first stage space and a second stage space, each space divided into compression chambers by the sliding vanes and contact between the ring and post or between the ring and housing.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: May 14, 1991
    Assignee: Ford Motor Company
    Inventors: Jayendra J. Amin, Guntis V. Strikis
  • Patent number: 4902209
    Abstract: A multiple or compound work cycle, eccentric rotor, fluid power translation device, featuring adjustable and reversible work output capability, essentially comprising: A symmetric rotor having a plurality of fixed radially extended vanes rotating closely between opposing co-axially adjustable confinement plates. An internal, eccentrically disposed annulus comprised of segmented concentric rings having co-axially protruding edges; said edges engaging circular, matching bearing grooves provided by said opposed confinement plates. The segments comprising each segmented ring being each penetrated by a rotor vane; two or more segments per vane thereby compelling co-rotation of said segments and locating said segments relative segments penetrated by adjacent rotor vanes.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: February 20, 1990
    Inventor: Howard A. Olson
  • Patent number: 4867652
    Abstract: A rolling rotor motor/compressor is made with a stator and both an inner and an outer rotor which serve to mechanically balance the device. The device can be configured to be a single compressor, two compressors, staged compressors as well as functioning as a motor. In the preferred embodiment the rotors are restricted to an orbiting movement.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: September 19, 1989
    Assignee: Carrier Corporation
    Inventor: Thomas P. Gormley
  • Patent number: 4793138
    Abstract: An adjustable hydrostatic drive, particularly for the auxiliary units of motor vehicle internal combustion engines, has a pump/motor unit (2, 3) with the pump and motor arranged radially one within the other in a common housing (1) with an eccentric control ring (6) between them. The pump and motor are hydraulically connected together and have delivery volumes adjustable in opposite senses. The speed variation mechanism includes a shaft (14) driving the pump/motor unit (2, 3) which passes through the side plates (17) of the housing and rotates with one projecting end (20) in a bushing (22) having an eccentric, sickle-shaped shoulder (21) that engages in a through bore (23) in a front face (30) of the control ring (6) and an outer bushing (24) that coaxially surrounds the shaft end bushing and includes a nose (25) which projects into a radial groove (26) in the control ring (6).
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: December 27, 1988
    Assignee: Pierburg GmbH
    Inventor: Hans Baumgartner
  • Patent number: 4552107
    Abstract: A rotary engine is comprised of at least one rotor assembly including a drum rotor and a cylinder rotor in internal contact with the drum rotor. The drum rotor bounds, with the cylinder rotor, and a crescent shaped working chamber and an annular working chamber, with the inner surface of the housing. The annular working chamber includes a first segmented annulus portion, a second segmented annulus portion of greater width than the first portion, and a transition portion of gradually increasing width connecting one end of first and second segmented annulus portions. A portion of the inner surface of the housing is inwardly projected between another end of first and second segmented annulus portions to come into contact with the periphery of the drum rotor.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: November 12, 1985
    Inventor: Chin L. Chen
  • Patent number: 4531899
    Abstract: A positive displacement rotary gas compressor pump comprising a ring piston having an annular wall with a gap forming confronting inlet and outlet ends, the outlet end, during the compression of the gas in the inner and/or outer pumping chambers, cooperating with a bridging wall portion joining two concentric cylinder walls, or with the end of the inner cylinder wall near its transfer port, so that the gas is compressed before being discharged from the pump.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: July 30, 1985
    Assignee: Pierburg GmbH & Co KG
    Inventors: Rainer Sudbeck, Hans Baumgartner, Manfred Brandstadter
  • Patent number: 4235572
    Abstract: A rotary displacement pump comprising a casing including a cylindrical in surface defining a stator chamber with an inlet and an outlet connected thereto. A cylindrical displacement body is movably mounted within the stator chamber having an outer surface which is movable into close association with the cylindrical inner surface along a line. A shaft is provided with an eccentric connected to the displacement body with a bearing to eccentrically move the displacement body within the stator chamber and move the line of close association in a circular path within the stator chamber. Gas tight spring bodies are connected between the displacement body and the casing for preventing rotation of the displacement body with respect to the casing and the displacement body is provided with first and second slide sealing members for dividing the stator chamber into an inlet base and an outlet base.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: November 25, 1980
    Assignee: Balzers Aktiengesellschaft fur Hochvakuumtechnik und Dunne Schichten
    Inventors: Otto Winkler, Eberhard Moll
  • Patent number: 4157234
    Abstract: The invention comprises a positive fluid displacement apparatus of the scroll type described as a fluid compressor in the exemplary embodiment. The embodiment has single fixed and movable scroll elements in which the latter orbits the former to form variable volume pockets which move from an inlet to an outlet and means are provided for discharging fluid from at least one of the pockets prior to its movement to the outlet port, cooling the vented fluid and returning it to the apparatus for final compression and discharge. Accordingly, by this arrangement, two stages of compression with intercooling are provided in a single apparatus having only a single fixed scroll element and a single movable scroll element.
    Type: Grant
    Filed: September 21, 1978
    Date of Patent: June 5, 1979
    Assignee: Ingersoll-Rand Company
    Inventors: H. William Weaver, Robert W. Shaffer
  • Patent number: 4141677
    Abstract: The invention comprises a positive fluid displacement apparatus of the scroll type described as a fluid compressor in the exemplary embodiment. The embodiment has single fixed and movable scroll elements in which the latter orbits the former to form variable volume pockets which move from an inlet to an outlet and means are provided for discharging fluid from at least one of the pockets prior to its movement to the outlet port, cooling the vented fluid and returning it to the apparatus for final compression and discharge. Accordingly, by this arrangement, two stages of compression with intercooling are provided in a single apparatus having only a single fixed scroll element and a single movable scroll element.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: February 27, 1979
    Assignee: Ingersoll-Rand Company
    Inventors: H. William Weaver, Robert W. Shaffer
  • Patent number: 3930763
    Abstract: A rotary cell pump is provided for the conveying of sausage stuffing and the like. The pump has a stationary hub and a stator surrounding the hub in concentric relation therewith and an eccentric rotor. The rotor divides the pump into an inner pumping chamber for the sausage mix and an outer pump chamber forming an air pump to evacuate air from the sausage mix.
    Type: Grant
    Filed: September 17, 1973
    Date of Patent: January 6, 1976
    Assignee: VEMAG Verdener Maschinen-und Apparatebau GmbH
    Inventor: Heinz Rose