Spring Biased Patents (Class 418/248)
  • Patent number: 9482151
    Abstract: Direct circular rotary internal-combustion engine with toroidal expansion chamber and rotor without moving parts, which directly converts the combustion expansion into a rotary movement of the shaft thereof, receives the compressed oxidizing agent at high pressure, does not require inertia in order to function, and in which combustion can take place in a static combustion chamber.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: November 1, 2016
    Assignee: Map Energy SpA
    Inventor: Roberto Felipe Moser Rossel
  • Patent number: 9279366
    Abstract: A rotary engine and method having a housing with a bore defining a cavity. A rotatable rotor in the cavity has a plurality of protuberant lobes with respective distal ends moving along the bore. Each of a plurality of vanes has a distal end biased to engage a perimeter of the rotor. The rotor rotates between neutral rotor positions where all of the lobes are simultaneously rotationally aligned with the vanes, and a plurality of different power stroke rotor positions between consecutive neutral rotor positions incrementally increasing in size a like plurality of volumetrically equivalent working fluid expansion chambers that are each in fluid communication with a respective working fluid inlet intersecting the bore and, in turn, incrementally decreasing in size a like plurality of volumetrically equivalent working fluid exhaust chambers each in continuous fluid communication with a respective working fluid outlet intersecting the bore.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: March 8, 2016
    Assignee: SPINDYNE LLC
    Inventors: Stephen W. Shields, David William Shields
  • Patent number: 9011123
    Abstract: A rotary pump device includes a stator chamber with a cylindrical inner wall having intake and exhaust ports and a swinging abutment mounted therein, and a rotor eccentrically mounted on an axial drive shaft for rotation within the chamber. The rotor keeps continuous wiping contact with the chamber wall while the swinging abutment maintains contact with the rotor to partition the intake and outlet ports. In a single abutment configuration, a full intake/exhaust cycle occurs every 360° of rotor travel.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: April 21, 2015
    Inventor: John McIntyre
  • Patent number: 8985985
    Abstract: A rotary compressor (102) has a shaft (4), a cylinder (5), a piston (8), a first vane (32), and a second vane (33). The first vane (32) divides a space between the cylinder (5) and the piston (8) along a circumferential direction of the piston (8). The second vane (33) further divides the space divided by the first vane (32) along the circumferential direction of the piston (8) so that a first compression chamber (25) and a second compression chamber (26) having a smaller volume than the first compression chamber (25) are formed within the cylinder (5). The piston (8) and the second vane (33) are integrated together, or the piston (8) and the second vane (33) are coupled together.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 24, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takeshi Ogata, Atsuo Okaichi, Hiroshi Hasegawa
  • Patent number: 8985976
    Abstract: An expander-integrated compressor (100) includes: a compression mechanism (2) for compressing a working fluid; an expansion mechanism (3) for expanding a working fluid; and a shaft (5) that couples the compression mechanism (2) and the expansion mechanism (3). The expansion mechanism (3) includes a variable vane mechanism (60). The variable vane mechanism (60) controls the movement of a first vane (48) so that the ratio of a period P2 to a period P1 (P2/P1) can be adjusted, where P1 denotes the period during which the first vane (48) is in contact with a first piston (46) in the course of one rotation of the shaft (5), and P2 denotes the period during which the first vane (48) is spaced from the first piston (46) in the course of one rotation of the shaft (5).
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: March 24, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yasufumi Takahashi, Atsuo Okaichi, Takeshi Ogata, Hidetoshi Taguchi, Takumi Hikichi, Masaru Matsui
  • Patent number: 8985984
    Abstract: A rotary compressor (102) has a shaft (4), a cylinder (5), a piston (8), a first vane (32), a second vane (33), a first suction port (19), and a second suction port (20). The first vane (32) divides a space between the cylinder (5) and the piston (8) along a circumferential direction of the piston (8). The second vane (33) further divides the space divided by the first vane (32) along the circumferential direction of the piston (8) so that a first compression chamber (25) and a second compression chamber (26) having a smaller volume than the first compression chamber (25) are formed within the cylinder (5). The first suction port (19) introduces a working fluid into the first compression chamber (25). The second suction port (20) introduces a working fluid into the second compression chamber (26). The second suction port (20) is provided with a suction check valve (50).
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 24, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takeshi Ogata, Atsuo Okaichi, Hiroshi Hasegawa
  • Patent number: 8967984
    Abstract: A twin rotary compressor is provided. In the twin rotary compressor, a refrigerant suction pipe may be connected to a middle plate positioned between a first cylinder and a second cylinder to reduce a height of the first cylinder, so that heights of a first rolling piston and a first vane may also be lowered. This may allow a contact area between the first rolling piston and the first vane to be decreased so as to reduce refrigerant leakage from a first compression space of the first cylinder, resulting in improvement of compression efficiency of the compressor.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: March 3, 2015
    Assignee: LG Electronics Inc.
    Inventors: Yunhi Lee, Seungjun Lee, Minchul Yong
  • Patent number: 8915727
    Abstract: According to one embodiment, a rotary compressor includes a compressing unit provided with a cylinder having a flared portion to provide a vane groove. In the compressing unit, a piston revolves along a cylinder inner wall, and an operation chamber is formed between the cylinder inner wall and the piston. A vane protrudes from the vane groove into the operation chamber and comes in contact with the annular piston to partition the operation chamber into an inlet chamber and a compression chamber. A spring inserted in a spring hole formed in the back of the vane groove presses the back of the vane. A spring holder pin is inserted in a pin hole located on the outer circumferential side of an end of the vane groove and crossing the spring hole to prevent the spring from coming off the spring hole when the compressing unit is installed in the housing.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: December 23, 2014
    Assignee: Fujitsu General Limited
    Inventor: Junya Tanaka
  • Patent number: 8613270
    Abstract: A rotary internal combustion engine includes an outer housing and an inner housing and an enclosure defined therebetween. At least one of the outer and inner housings is rotatable relative to the other and at least two barriers are disposed in the enclosure and divide the enclosure into a combustion chamber and an exhaust chamber. At least one barrier is rotatable relative to at least one other barrier and at least one barrier comprises a retractable barrier mounted along a pivot axis and is pivotable between an extended position and a retracted position. An intake port, exhaust port, and ignition source are also provided. A method of combusting a fuel comprises rotating a drive member to expand a combustion chamber and substantially isolate the combustion chamber from an exhaust chamber, and introducing and combusting a combustion fluid and a fuel in the combustion chamber as the combustion chamber is expanding.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: December 24, 2013
    Inventor: Scott Hudson
  • Patent number: 8529235
    Abstract: An oscillating variable displacement ring pump provides both positive and variable displacement. A housing circumscribes a pump chamber. The pump chamber encases an oscillating ring driven by a crank assembly. The ring encircles an end of the crank assembly. The crank assembly includes an annular spacer that rolls inside the ring. When the pump chamber is sealed, rotation of the crank assembly causes ring oscillation in the chamber. Ring oscillation creates vacuum pressure, which draws substances into pump chamber via an inlet port while pumping out substances of the pump chamber via an outlet port. A valve within the pump chamber contacts the ring and follows ring oscillation to help separate incoming substances from outgoing substances. The pump can include an adjustable internal by-pass means to control the volume and pressure of substances delivered by the pump.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: September 10, 2013
    Inventor: Ronald Szepesy
  • Patent number: 8286609
    Abstract: A rotary internal combustion engine includes an outer housing and an inner housing and an enclosure defined therebetween. At least one of the outer and inner housings is rotatable relative to the other and at least two barriers are disposed in the enclosure and divide the enclosure into a combustion chamber and an exhaust chamber. At least one barrier is rotatable relative to at least one other barrier and at least one barrier comprises a retractable barrier mounted along a pivot axis and is pivotable between an extended position and a retracted position. An intake port, exhaust port, and ignition source are also provided. A method of combusting a fuel comprises rotating a drive member to expand a combustion chamber and substantially isolate the combustion chamber from an exhaust chamber, and introducing and combusting a combustion fluid and a fuel in the combustion chamber as the combustion chamber is expanding.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: October 16, 2012
    Inventor: Scott Hudson
  • Patent number: 8257069
    Abstract: An improved high torque rotary abutment motor is provided that is capable of producing ultra high pressures, while still remaining light weight and reliably efficient. The rotary abutment motor is provided with a body and rotor are sealed in the axial direction with two face spring seals compensating for tolerance and wearing gap. In such a configuration, increasing pressures create increasing force of sealing, thereby allowing operational pressures in excess of what is currently available today.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: September 4, 2012
    Inventor: Yan Satanovskiy
  • Patent number: 8075292
    Abstract: A rotary piston compressor comprises a cylinder block (100), an eccentric rotor group (200) being fitted in the chamber of the cylinder block, a shaft (2) and a separating means (40). The eccentric rotor group (200) comprises a cylindrical rotor (4) provided on the shaft (2) and rotatable therewith, and a collar (3) rotationally provided on the cylindrical rotor (4). The separating means (40) is used for separating the axially extended sealed chamber, which is formed between the outer peripheral surface of the eccentric rotor group (200) and the inner wall of the cylinder block (100), into an induction chamber (70) and an exhaustion chamber (71).
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: December 13, 2011
    Inventor: Xiaoying Yun
  • Publication number: 20100310403
    Abstract: An oscillating variable displacement ring pump provides both positive and variable displacement. A housing circumscribes a pump chamber. The pump chamber encases an oscillating ring driven by a crank assembly. The ring encircles an end of the crank assembly. The crank assembly includes an annular spacer that rolls inside the ring. When the pump chamber is sealed, rotation of the crank assembly causes ring oscillation in the chamber. Ring oscillation creates vacuum pressure, which draws substances into pump chamber via an inlet port while pumping out substances of the pump chamber via an outlet port. A valve within the pump chamber contacts the ring and follows ring oscillation to help separate incoming substances from outgoing substances. The pump can include an adjustable internal by-pass means to control the volume and pressure of substances delivered by the pump.
    Type: Application
    Filed: July 29, 2010
    Publication date: December 9, 2010
    Inventor: Ronald SZEPESY
  • Patent number: 7845332
    Abstract: A rotary engine includes an outer shell having a plurality of working spaces each receiving a power-generating unit. A rotor is rotatable within the outer shell, and includes a rotor body and a plurality of vanes. When the rotor rotates one revolution in the outer shell, each of the vanes drives each of the power-generating units to complete a working cycle including four strokes of intake, compression, combustion, and exhaust. In each combustion stroke, compressed gas is injected on the corresponding vane to rotate the rotor about the central axis of an output shaft.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: December 7, 2010
    Inventor: Sern-Bean Wang
  • Patent number: 7837449
    Abstract: There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: November 23, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masaya Tadano, Haruhisa Yamasaki, Kenzo Matsumoto, Dai Matsuura, Kazuya Sato, Takayasu Saito, Toshiyuki Ebara, Satoshi Imai, Atsushi Oda, Takashi Sato, Hiroyuki Matsumori
  • Patent number: 7766636
    Abstract: An oscillating variable displacement ring pump provides both positive and variable displacement. A housing circumscribes a pump chamber. The pump chamber encases an oscillating ring driven by a crankshaft. The crankshaft's offset shaft is located inside the pump chamber. The ring encircles the offset shaft. A bearing rotatably attached to the offset shaft rolls inside the ring. When the pump chamber is sealed, rotation of the offset shaft causes ring oscillation in the chamber. Ring oscillation creates vacuum pressure, which draws substances into pump chamber via an inlet port while pumping out substances of the pump chamber via an outlet port. A valve within the pump chamber contacts the ring and follows ring oscillation to help separate incoming substances from outgoing substances. The pump can include an adjustable internal by-pass means to control the volume and pressure of substances delivered by the pump.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: August 3, 2010
    Inventor: Ronald Szepesy
  • Patent number: 7757658
    Abstract: An internal combustion rotary engine using vanes to create separate combustion chambers within the engine and capable of performing all four strokes of the Otto cycle (intake, compression, combustion and exhaust) in each separate combustion chamber. Each Otto cycle is completed in a 180-degree rotation with all four strokes of the Otto cycle being completed in 720 degrees. An intake and exhaust valve system tightly controls the flow of the air/fuel mixture into each separate combustion chamber.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: July 20, 2010
    Inventors: Sumiyuki Nagata, Ryan William Cobb
  • Publication number: 20100158729
    Abstract: A rotary expander includes: a cylinder (61); a piston (62) disposed inside the cylinder (61); closing members disposed with the cylinder (61) being sandwiched therebetween; and an injection passage for introducing further a working fluid in the expansion process of the working fluid. An introduction outlet (65c) of the injection passage leading to the working chamber (69) is provided at a position located inwardly away from the inner circumferential surface (61b) of the cylinder (61), on one of the closing members, in such a manner that the injection passage and the discharge passage are not communicated with each other.
    Type: Application
    Filed: September 21, 2007
    Publication date: June 24, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Hiroshi Hasegawa, Takeshi Ogata, Takumi Hikichi, Masanobu Wada, Yasufumi Takahashi
  • Patent number: 7722343
    Abstract: A sealed-type rotary compressor includes a rotary drive unit and a compression mechanism coupled via a rotary shaft pivotally supported by a main bearing and a sub-bearing, and roller bearings. In the compressor, there are provided an oil filler opening which is provided to the rotary shaft along its center axis from one end face and which introduces lubricant of the bottom of an closed case, and oil filler openings, one end of which opens into the oil filler opening and the other end of which opens into the outer circumferential surface of the rotary shaft and which feed lubricant to roller bearings are equipped. The oil filler openings are formed to open towards the direction subject to the load when the roller bearings are subject to a large load.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: May 25, 2010
    Assignee: Toshiba Carrier Corporation
    Inventor: Takuya Hirayama
  • Publication number: 20100008808
    Abstract: A highly reliable sliding face modification material capable of forming a stable film of molybdenum disulfide on the sliding face of a sliding member, the sliding face modification material having a molybdenum disulfide content of 95 wt % or more and an organic material content of 1500 ppm or less in weight ratio, and the sliding face modification material being projected onto the sliding face to form a coating layer.
    Type: Application
    Filed: October 15, 2007
    Publication date: January 14, 2010
    Inventors: Yuuki Yoshimi, Yoichiro Nakamura, Hirotaka Kawabata, Masato Ishiwata, Masato Hinata, Katsuhiro Shikano
  • Patent number: 7600501
    Abstract: A method for increasing the power output in an engine, pump, or similar device, which includes a cylinder, inside which is a lever piston pivoted to make a reciprocating motion and a rotating piston mounted eccentrically in a bearing to make a rotating motion, as well as an inlet opening opening into the work chamber of the cylinder and an exhaust opening leading out of the exhaust chamber of the cylinder. At least the rotating piston is hollow or manufactured from a material lighter than the pressurized medium used in the device. The lever piston too can be hollow or manufactured from a material lighter than the medium used.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: October 13, 2009
    Inventor: Velkko Kalevi Rantala
  • Patent number: 7500463
    Abstract: A rotary internal combustion engine has a hollow stator with inner cylindrical surface, and a right-prism rotor having rhombus-shape base with round angles and convex sides whose big diagonal equals the diameter of the stator. Two cavities within the rotor on opposite ends of the big diagonal of rhombus-shape base form principal combustion chambers with spark plugs. The hollow stator contains a diametrically opposed space separators sealingly engaged with the surface of the rotor. Variable volume intake, compression, power and exhaust chambers of the engine are formed by the inner surface of the stator, outer surface of the rotor and the side surfaces of the space separators. Intake and exhaust chambers are connected to the intake and exhaust systems via respective conduits. Compression and power chambers are connected to the combustion chambers via a slot openings controlled by the sliding covers moving within a radial rectangular grooves in the rotor.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: March 10, 2009
    Inventor: Yaroslav M. Shuba
  • Patent number: 7488166
    Abstract: A rotary volumetric machine includes a stator in which a cylindrical chamber is provided, a rotor disposed therein and secured to a shaft, blades formed on the rotor, and abutments movable by actuating elements between an extended position into the volume of the cylindrical chamber during the working phase so as to generate variations of volume between the blades and the abutments, and a position retracted into the stator to permit the passage of the blades from one side to the other of the abutments. The rotor includes a disc, two concentric shoulders disposed on opposite sides of the disc and two fixed blades disposed diametrically opposite on opposite sides of the disc each against one surface thereof and secured to the periphery of a shoulder so as to obtain an assembly balanced in rotation.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: February 10, 2009
    Inventor: Rene Snyders
  • Patent number: 7311077
    Abstract: A casing has a circular cylindrical internal surface delimiting an operating chamber. An orbiting piston is mounted so as to orbit about a chamber axis which is the axis of the internal surface. The orbiting piston has a circular cylindrical external surface, a generatrix of the external surface being adjacent to the said internal surface, and a diametrically opposite generatrix spaced form the internal surface. A vane member has a tip face which faces the external surface of the orbiting piston and which has a length substantially equal to that of the orbiting piston. A linkage connects the vane member to the orbiting piston to keep the tip face adjacent the external surface. At least one of the external and internal surfaces has individual compliant strips distributed around the one surface, which run parallel to one another, and project above the one surface.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: December 25, 2007
    Assignee: E.A. Technical Services Ltd.
    Inventor: Ronald William Driver
  • Patent number: 7264452
    Abstract: Improved rotor position control for rotary machines allows for positioning mechanisms which are more compact, relative to the stroke of the machine. A crank having a center shaft which extends through the rotor chamber is rotatably mounted in a forward in wall of the chamber. An eccentric shaft of the crank is rotatably mounted by the rotor and is aligned with rotor axis. A stationary gear extends into the rotor chamber and is rigidly mounted in a forward in wall of the chamber. A crank web is connected to the center shaft rearward of the stationary gear. The eccentric shaft passes through the rotor gear and is connected to the crank web forward of the rotor gear. The rotor gear has a pitch radius greater than that of the stationary gear by a ratio of the number of lobes of the rotor divided by the number of lobes minus one.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: September 4, 2007
    Inventor: Joaseph A. Sbarounis
  • Patent number: 7231894
    Abstract: A rotary displacement machine includes a casing having a circular cylindrical internal surface and a rotor disposed in the chamber mounted to orbit about a chamber axis, with the rotor having a circular cylindrical external surface. A vane member is mounted on the casing and pivotable about a pivot axis parallel to the chamber axis. The vane member has a passage way communicating between the exterior of the casing and the operating chamber. A linkage connects the vane member to the rotor so as to keep a tip face of the vane member in sealing contact with an external surface of the rotor.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: June 19, 2007
    Assignee: E.A. Technical Services Limited
    Inventor: Ronald William Driver
  • Patent number: 7044725
    Abstract: A machine, such as an engine, which includes a cylinder (1), an essentially cylindrical piston (5) set on bearings and equipped with an eccentrically-set shaft (11), an inlet port or valve (8), an outlet port or valve (9), and a lever device (7), which is attached by bearings to a shaft (6) and which is intended to be in essentially tight contact with the piston (5). The cylinder (1) forms an essentially cylindrical chamber for the rotary piston (5) and a partially cylindrical chamber for the lever device (7) that moves backwards and forwards. The piston (5) is equipped, in the interior of the working chamber, with sliding-ring-type bearings (13, 14).
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: May 16, 2006
    Inventor: Veikko Kalevi Rantala
  • Patent number: 7040883
    Abstract: A vane supporting apparatus for a hermetic compressor elastically supports vanes contacting to both cam faces of a dividing plate with thin torsion coil springs, and forms curved surface portions on upper ends of the vanes where the torsion coil springs are contacted, and thereby, height of the supporting apparatus supporting the respective vanes is reduced to miniaturize the compressor, and also, to prevent contacted portions between the vanes and the torsion coil springs from being worn away.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: May 9, 2006
    Assignee: LG Electronics Inc.
    Inventors: Kwang-Sik Yang, Hyoung-Joo Cho, Hong-Hee Park, Bum-Dong Sa
  • Patent number: 6926505
    Abstract: Two or more slidably mounted seals of radially orientation are provided in a rotary machine. One of the slidably mounted seals can be selectably retractable to perform a valving operation with respect to a rotor mounted for eccentric rotary motion within the machine.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: August 9, 2005
    Inventor: Joaseph A. Sbarounis
  • Patent number: 6887059
    Abstract: A machine, such as an engine, which includes a cylinder (1), an essentially cylindrical piston (5) set on bearings and equipped with an eccentrically-set shaft (11), an inlet port or valve (8), an outlet port or valve (9), and a lever device (7), which is attached by bearings to a shaft (6) and which is intended to be in essentially tight contact with the piston (5). The cylinder (1) forms an essentially cylindrical chamber for the rotary piston (5) and a partially cylindrical chamber for the lever device (7) that moves backwards and forwards. The piston (5) is equipped, in the interior of the working chamber, with sliding-ring-type bearings (13, 14).
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: May 3, 2005
    Inventor: Veikko Kalevi Rantala
  • Publication number: 20040219049
    Abstract: The invention relates to a method for increasing the power output in an engine, pump, or similar device, which includes a cylinder (4), inside which is a lever piston (7) pivoted (8) to made a reciprocating motion and a rotating piston (6) mounted eccentrically in a bearing (1) to make a rotating motion, as well as an inlet opening (3) opening into the work chamber (9) of the cylinder and an exhaust opening (5) leading out of the exhaust chamber (10) of the cylinder. At least the rotating piston (5) is hollow or manufactured from a material lighter than the pressurized medium used in the device. The lever piston (7) too can be hollow or manufactured from a material lighter than the medium used.
    Type: Application
    Filed: March 22, 2004
    Publication date: November 4, 2004
    Inventor: Velkko Kalevi Rantala
  • Publication number: 20040076537
    Abstract: An object of the present invention is to provide a multi-cylinder rotary compressor which can enhance the reliability by improving the compression efficiency/mechanical efficiency. The bearings are fixed on the inner wall of the closed container, the cylinders are fixed to the bearings, and a gap is formed between the respective cylinders and the inner wall of the closed container. The design with the relatively large internal volume of the closed container is possible, and the reliability can be enhanced. Further, improvement in the compression efficiency and the mechanical efficiency can be achieved with the compact multi-cylinder rotary compression element.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 22, 2004
    Inventors: Kenzo Matsumoto, Akira Hashimoto, Midori Futakawame, Masazumi Sakaniwa, Hiroyuki Sawabe
  • Patent number: 6692242
    Abstract: An object of the present invention is to provide a multi-cylinder rotary compressor which can enhance the reliability by improving the compression efficiency/mechanical efficiency. The bearings are fixed on the inner wall of the closed container, the cylinders are fixed to the bearings, and a gap is formed between the respective cylinders and the inner wall of the closed container. The design with the relatively large internal volume of the closed container is possible, and the reliability can be enhanced. Further, improvement in the compression efficiency and the mechanical efficiency can be achieved with the compact multi-cylinder rotary compression element.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: February 17, 2004
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matsumoto, Akira Hashimoto, Midori Futakawame, Masazumi Sakaniwa, Hiroyuki Sawabe
  • Patent number: 6676393
    Abstract: An object of the present invention is to provide a multi-cylinder rotary compressor which can enhance the reliability by improving the compression efficiency/mechanical efficiency. The bearings are fixed on the inner wall of the closed container, the cylinders are fixed to the bearings, and a gap is formed between the respective cylinders and the inner wall of the closed container. The design with the relatively large internal volume of the closed container is possible, and the reliability can be enhanced. Further, improvement in the compression efficiency and the mechanical efficiency can be achieved with the compact multi-cylinder rotary compression element.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: January 13, 2004
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matsumoto, Akira Hashimoto, Midori Futakawame, Masazumi Sakaniwa, Hiroyuki Sawabe
  • Patent number: 6619939
    Abstract: A rotary pump including: a casing having a circular inner circumferential surface, a rotor rotating about a center of the inner circumferential surface of the casing, a partition plate installed so as to be movable in and out of the casing so that a tip end of the partition plate comes into contact with an outer circumferential surface of the rotor, a spring which drives the partition plate so that the partition plate is in constant contact with the rotor, and an intake port and a discharge port formed in the casing so as to be positioned after and before the partition plate with respect to the direction of rotation of the rotor; and the partition plate is formed with a communicating portion that communicates between the intake port side and the discharge port side.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: September 16, 2003
    Assignee: Takuma Co., Ltd.
    Inventors: Umeo Inoue, Satoshi Shibata, Hiroyuki Kishida
  • Publication number: 20030170136
    Abstract: A machine, such as an engine, which includes a cylinder (1), an essentially cylindrical piston (5) set on bearings and equipped with an eccentrically-set shaft (11), an inlet port or valve (8), an outlet port or valve (9), and a lever device (7), which is attached by bearings to a shaft (6) and which is intended to be in essentially tight contact with the piston (5). The cylinder (1) forms an essentially cylindrical chamber for the rotary piston (5) and a partially cylindrical chamber for the lever device (7) that moves backwards and forwards. The piston (5) is equipped, in the interior of the working chamber, with sliding-ring-type bearings (13, 14).
    Type: Application
    Filed: March 17, 2003
    Publication date: September 11, 2003
    Inventor: Veikko Kalevi Rantala
  • Publication number: 20030072667
    Abstract: A rotary pump including: a casing having a circular inner circumferential surface, a rotor rotating about a center of the inner circumferential surface of the casing, a partition plate installed so as to be movable in and out of the casing so that a tip end of the partition plate comes into contact with an outer circumferential surface of the rotor, a spring which drives the partition plate so that the partition plate is in constant contact with the rotor, and an intake port and a discharge port formed in the casing so as to be positioned after and before the partition plate with respect to the direction of rotation of the rotor; and the partition plate is formed with a communicating portion that communicates between the intake port side and the discharge port side.
    Type: Application
    Filed: January 9, 2002
    Publication date: April 17, 2003
    Inventors: Umeo Inoue, Satoshi Shibata, Hiroyuki Kishida
  • Patent number: 6530357
    Abstract: The present invention pertains to rotary internal combustion engines and essentially relates to an engine including a body that comprises an inner cylindrical cavity as well as side covers. The cavity comprises a rotor-piston which is concentrically mounted therein, which comprises side surfaces, radial protrusions and radial recesses on its peripheral surface, and which forms together with the body a plurality of segmented cavities. The side surfaces of the rotor-piston abut tightly with the side covers, while the radial protrusions at the peripheral surface of the rotor-piston abut tightly with the inner cylindrical surface of the body cavity. The combustion chamber is located beyond the limits of the inner cylindrical cavity and communicates with the latter through inlet and outlet channels provided with controlled slide valves.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: March 11, 2003
    Inventor: Viktor Prokoflevich Yaroshenko
  • Patent number: 6524086
    Abstract: An object of the present invention is to provide a multi-cylinder rotary compressor which can enhance the reliability by improving the compression efficiency/mechanical efficiency. The bearings are fixed on the inner wall of the closed container, the cylinders are fixed to the bearings, and a gap is formed between the respective cylinders and the inner wall of the closed container. The design with the relatively large internal volume of the closed container is possible, and the reliability can be enhanced. Further, improvement in the compression efficiency and the mechanical efficiency can be achieved with the compact multi-cylinder rotary compression element.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: February 25, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matsumoto, Akira Hashimoto, Midori Futakawame, Masazumi Sakaniwa, Hiroyuki Sawabe
  • Publication number: 20020182095
    Abstract: An object of the present invention is to provide a multi-cylinder rotary compressor which can enhance the reliability by improving the compression efficiency/mechanical efficiency. The bearings are fixed on the inner wall of the closed container, the cylinders are fixed to the bearings, and a gap is formed between the respective cylinders and the inner wall of the closed container. The design with the relatively large internal volume of the closed container is possible, and the reliability can be enhanced. Further, improvement in the compression efficiency and the mechanical efficiency can be achieved with the compact multi-cylinder rotary compression element.
    Type: Application
    Filed: July 19, 2002
    Publication date: December 5, 2002
    Applicant: Sanyo Electric Co. Ltd.
    Inventors: Kenzo Matsumoto, Akira Hashimoto, Midori Futakawame, Masazumi Sakaniwa, Hiroyuki Sawabe
  • Publication number: 20020182096
    Abstract: An object of the present invention is to provide a multi-cylinder rotary compressor which can enhance the reliability by improving the compression efficiency/mechanical efficiency. The bearings are fixed on the inner wall of the closed container, the cylinders are fixed to the bearings, and a gap is formed between the respective cylinders and the inner wall of the closed container. The design with the relatively large internal volume of the closed container is possible, and the reliability can be enhanced. Further, improvement in the compression efficiency and the mechanical efficiency can be achieved with the compact multi-cylinder rotary compression element.
    Type: Application
    Filed: July 19, 2002
    Publication date: December 5, 2002
    Applicant: Sanyo Electric Co. Ltd.
    Inventors: Kenzo Matsumoto, Akira Hashimoto, Midori Futakawame, Masazumi Sakaniwa, Hiroyuki Sawabe
  • Patent number: 6347611
    Abstract: An engine system includes a plurality of adjacent expansion rotor housings each having a generally cylindrical expansion rotor cavity. The expansion rotor cavity of each expansion rotor housing is substantially aligned with the expansion rotor cavity of each other expansion rotor housing. An elongated shaft extends through the expansion rotor cavity of each expansion rotor housing along a respective longitudinal axis of each expansion rotor cavity. A set of adjacent combustion assemblies is attached to each one of the expansion rotor housings. Each one of the combustion assemblies includes a combustion chamber. An expansion rotor is mounted on the shaft in the expansion rotor cavity of each expansion rotor housing such that the elongated shaft extends through a centroidal axis of each expansion rotor. A fuel delivery system is attached to each one of the combustion assemblies for providing a supply of fuel to each one of the combustion chambers.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: February 19, 2002
    Inventor: Ellis F. Wright
  • Patent number: 6336799
    Abstract: An object of the present invention is to provide a multi-cylinder rotary compressor which can enhance the reliability by improving the compression efficiency/mechanical efficiency. The bearings are fixed on the inner wall of the closed container, the cylinders are fixed to the bearings, and a gap is formed between the respective cylinders and the inner wall of the closed container. The design with the relatively large internal volume of the closed container is possible, and the reliability can be enhanced. Further, improvement in the compression efficiency and the mechanical efficiency can be achieved with the compact multi-cylinder rotary compression element.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: January 8, 2002
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matsumoto, Akira Hashimoto, Midori Futakawame, Masazumi Sakaniwa, Hiroyuki Sawabe
  • Patent number: 6241499
    Abstract: The present invention relates to a rotary piston engine to be used as a pump or an engine, comprising a housing (1) fitted with end walls (8, 9), a rotary body (2) rotatably mounted in said housing, and at least one sealing element (7) separating a volume formed between the housing (1) and the rotary body (2), said housing having at least one pair of inlet and outlet openings and the sealing element (7) having two legs portions, the ends of which abut against the rotary body (2), and a web portion intermediate said leg portions, said sealing element additionally being pivotable about a pivot axis on said web portion. The sealing element is movably associated with the housing in such a manner that the sealing element is displaceable radially, thus allowing the sum of the distances from the axis of rotation of the rotary body to the points of abutment on said body to vary.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: June 5, 2001
    Inventor: Ake Stigebrandt
  • Patent number: 6168401
    Abstract: An hydraulic conveying device, in particular for conveying diesel fuel for an internal-combustion engine in motor vehicles, with a housing provided with at least one conveying chamber as well as a displacement unit rotor arranged in the conveying chamber. Rotation of the displacement unit forms pump chambers with varying volumes by means of which a fluid is conveyed from a suction connection of the conveying device to a pressure connection of the conveying device. The conveying devices includes a screen or wall with openings for retaining a quantity of the fluid to be conveyed in the conveying chamber when a supply of fluid by way of the suction connection is interrupted.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: January 2, 2001
    Assignee: Luk Automobiltechnik GmbH & Co. KG
    Inventors: Kai Schenck, Dieter Otto
  • Patent number: 6162033
    Abstract: The present invention comprises an economizer tube assembly for a sealed compressor. The economizer tube assembly of the present invention includes an economizer fitting and an economizer fitting extension. The economizer fitting extension extends through a center shell assembly of the compressor into a housing element that defines a portion of the compression chamber. The economizer fitting extension includes a refrigerant vapor seal with the housing element. The economizer fitting and economizer fitting extension both include interior chambers, which are in communication with each other. The economizer fitting mounts flush to the center shell assembly and is preferably secured to the center shell assembly by a welded joint.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: December 19, 2000
    Assignee: Carrier Corporation
    Inventors: Billy W. Moore, Jr., Scott Westberg, Frederick L. Phillips
  • Patent number: 6158995
    Abstract: A sealed compressor has a sealed casing in which a motor section and a compression section are both accommodated, and also has a pipe connector including at least one sleeve. The sleeve has a first end and a second end opposite to each other. The first end is inserted into a sleeve insertion hole defined in the compression section to allow a refrigerant to flow therethrough, while the second end is hermetically brazed to a copper pipe disposed outside the sealed casing. The sleeve is formed by deep-drawing a copper-plated steel plate into a generally cylindrical shape.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: December 12, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeru Muramatsu, Hiroshi Takano, Hiroyuki Fukuhara
  • Patent number: 6149414
    Abstract: The invention concerns an oil-sealed vane-type rotary vacuum pump (1) with a rotor (3) and an oil pump (45, 46) whose suction chamber is fitted with feeds (64, 65) for gas and oil. In order to simplify the supply of a gas/oil mixture to the vacuum pump, the invention proposes that the gas and oil feeds (64, 65) are disposed in such a way that initially only oil and subsequently both oil and air are aspirated into the volume swept by the oil pump (45, 46) as it rotates.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: November 21, 2000
    Assignee: Leybold Vakuum GmbH
    Inventors: Thomas Abelen, Peter Muller
  • Patent number: 6120272
    Abstract: A pump or motor 10 provides a housing 20 which carries one or more elliptical drivers 40 which rotate freely with an axle which is rotatably carried by the housing. One V-shaped rocker 60 is associated with each elliptical driver, and moves in an oscillatory motion in response to being driven by the associated elliptical driver. When used as a motor, fluid entering the housing tends to apply pressure to one side of the elliptical driver, while the other side is shielded from pressure by the V-shaped rocker. Uneven pressure causes the elliptical driver to rotate. As the elliptical driver rotates, the V-shaped rocker oscillates in a period manner at twice the frequency of the elliptical driver. The vertical height of the V-shaped is determined by an adjustable support 80, which allows regulation over the friction level and fluid seal between the rocker and the elliptical drive, and which allows adjustment to compensate for wear of the surfaces of contact between the rocker and the elliptical driver.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: September 19, 2000
    Inventor: Arturo Gallardo
  • Patent number: 5144626
    Abstract: A data processor comprises a multifrequency receiver formed together with a central processor on a semiconductor substrate. The multifrequency receiver produces digital data for identifying a tone wave included in a multifrequency analog signal or produces an identification result in accordance with the condition of signal issued by the central processor. The multifrequency receiver is thereby operative to deal with tone waves which are flexible in type and input analog signals which are flexible in their frequency band, and has increased latitude of choice for the operational characteristics and function such as the number of sampling periods of input analog signals and the discrimination accuracy.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: September 1, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Kenzo Funatsu, Takashi Ito, Naoki Yashiki, Chiaki Kubumura, Keiji Kubuyama