Abutment Patents (Class 123/248)
  • Patent number: 11143098
    Abstract: An internal combustion rotary engine is provided for producing mechanical torque. The engine includes an annular planar housing, a rotor, sparkplugs, flap valves, an axial shaft and fore-and-aft covers. The housing includes a quadrilateral symmetry including a substantially circular annulus flanked by first and second cavities. The rotor has a cam block sandwiched between fore and aft circular wings. The sparkplugs are respectively accessible to the second cavities. The flap valves rock within the respective cavities and within the cam block. Each valve includes indents to pass around the wings. The fuel intake provides fuel to the cavities. The axial shaft rotates the rotor within the housing. Covers, each having a center orifice and a pair of ports exposed to ambient and respectively adjacent the first and second cavities. The wings intermittently block at least one port while the rotor rotates.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: October 12, 2021
    Assignee: United States of America, as represented by the Secretary of the Navy
    Inventors: William Gregory Buchanan, Vincent J. Vendetti
  • Patent number: 10794186
    Abstract: A transmission assembly for a rotary piston and cylinder device, comprising a rotor including a piston, a stator, a shutter including a slot to receive the piston, and a first gear and a gear sub-assembly, the first gear connectable to a rotatably mounted shutter of the device, and the first gear extending from a side of the shutter, and the first gear connected to the gear sub-assembly which converts rotation to an axis of rotation different to that of the shutter.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: October 6, 2020
    Assignee: Lontra Limited
    Inventor: Stephen F. Lindsey
  • Patent number: 10006357
    Abstract: A rotary engine including a compressor unit and an expander unit, a stator having cylindrical inner wall with intake and outlet ports, a hinged gate which fits into the stator inner wall, multiple sealing-strips being loosely embedded within the stator inner wall and backed by elastic force, an eccentrically rotating rotor with a freely rotatable rotor-sleeve which engages with the hinged gate while separating pressure and non-pressure area incident to the expansion and contraction of the working space, the above components being sandwiched between end-plates, perfect dynamic sealing without solid sliding friction, a gate-operated valve conducting the working fluid from the compressor unit into the expander unit via conduit ports in duly timing. The combination of the two units performs a full and extended power cycle simultaneously during each revolution of a common straight shaft.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: June 26, 2018
    Inventor: Zhong Ai Xia
  • Patent number: 9957961
    Abstract: A concentric rotary fluid machine includes a first body and a second body that are rotatable relative to each other and coaxially arranged one inside the other. A plurality of gates are supported by the second body in gate pockets. Each gate pocket includes: a gate retention recess that receives a gate cylinder of a gate; a gate seal recess that receives a sealing portion of a gate; and an intervening land. The sealing portion is configured to reciprocate up and down within a corresponding gate seal recess while maintaining contact with the recess and the second body. A plurality of lobes on the first body cause the gates to swing about respective swing axes as the first body rotates relative to the second body. The lobes and the lands are configured so that a lobe forms a substantial seal against a land when in mutual radial alignment.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: May 1, 2018
    Assignee: GREYSTONE TECHNOLOGIES PTY. LTD.
    Inventors: Nicholas Ryan Marchand, Jeffery Ronald Clausen
  • Patent number: 8776759
    Abstract: A rotary engine according to the present invention comprises a main housing assembly and a rotor assembly rotatably supported within the housing. The rotor assembly has two rotors, an intake/compression rotor rotatably disposed within the intake/compression housing, and a power/exhaust rotor rotatably disposed within the power/exhaust housing. The rotors have N number of apexes and sides, wherein N is an integer greater than 2. A rotating chamber is formed between each side of the each rotor and the inner wall of the respective housing. The stages of the thermodynamic cycle of the engine occur within these chambers. For example, if the rotors have three sides, the rotors will have a triangular-like shape with three apexes. The apexes form the outermost radial part of the rotors which engage the inner wall of the respective housing bore. Each of these chambers is split into two divided chambers by a reciprocating vane, thereby forming 2 times N divided chambers in each of the respective housing bores.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: July 15, 2014
    Inventor: Jose Lopez Cruz
  • Patent number: 8689763
    Abstract: The rotary engine includes a circular stator, a circular rotor rotating about the stator; the rotor and the stator being separated by a circular cylinder and at least one element with two flanges. The rotor includes two compression pistons attached to the inner surface of the rotor. These two pistons are located at the two extremities of a first diameter of the rotor and kept substantially in contact with the outer surface of the stator. The stator includes a recess at each extremity of a diameter. Each recess forms a compression chamber with the compression piston positioned at the end of the recess in the direction of rotation of the rotor and one of the flanges of the element with two flanges, referred to as the cylinder head flange. The motive force is applied to the compression piston when the pressure of the gases inside the compression chamber is suddenly increased to a predefined value.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: April 8, 2014
    Inventor: Henri Pandolfo
  • Patent number: 7793516
    Abstract: The problems of prior compressor structures relying upon conventional check valves are obviated by using, instead, flow control passages which operate to control flow while avoiding mechanical moving elements which may become problematical.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: September 14, 2010
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Timothy Samuel Farrow, Albert Vincent Makley
  • 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: 7341042
    Abstract: A rotary positive displacement control system and apparatus includes a transmission assembly, at least a compression assembly and buffer assembly, and an expansion assembly, the buffer assembly disposed between the compression and expansion assembly. The compression assembly includes multiple compression rotors with lobes intermeshing with each other, and the expansion assembly including expansion rotors with lobes intermeshing with each other. An intake and exhaust port respectively located at the compression assembly and expansion assembly. The buffer assembly has a buffer chamber being able to efficiently lead compressed gases to the expansion assembly; meanwhile, residual gases can be discharged from a first and second exhaust slots both disposed on the expansion assembly.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: March 11, 2008
    Assignee: Liung Feng Industrial Co., Ltd.
    Inventors: Tien-tung Chung, Heng-i Lin, Tsang-lin Hsu, Chin-te Lin
  • Patent number: 7073477
    Abstract: A rotary engine is provided with solid vanes which extend through the rotor and engage opposing interior wall portions of the stator housing. A series of grooves in the interior wall permit the expanding exhaust gases to by-pass the minimal surface area of vanes proximate to the combustion chamber to engage the larger surface area of a vane which is protruding more significantly from the rotor. This robust rotary engine is preferably made of cast iron, having internal portions coated with ceramic so that it readily can operate at temperatures exceeding 850° F. The heat energy is utilized to obtain maximum productive work rather than being discarded as a waste product as is typical with most state of the art power plants, resulting in an efficiency rating exceeding 60%.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: July 11, 2006
    Inventor: Raymond W. Gorski
  • Patent number: 6854437
    Abstract: A revolving piston rotary annular cylinder valved continuous combustion or flow expandable chamber devices, compressor and engine machine system with an outer toroid cylinder housing assembly having a central axis, having one or a plurality of balanced pistons with means for attachment to a rotor and radiating through the outer rotor assembly to contact or come within close tolerance of the interior surface of the outer housing at the other extreme of the pistons, whereby, a plurality of relatively air tight compartments are formed between the interior surface of the outer housing, the outer surface of the rotor assembly and the piston or plurality of pistons with the volume of said compartment varying as a function of the rotative position of the inner cylinder and rotor assembly in relation to the isolating valve.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: February 15, 2005
    Inventor: Jesus Vazquez
  • Publication number: 20020134343
    Abstract: The engine comprises four open-ended curved cylinders (10) disposed in torroidal arrangement with respect to a central pivot point (11). Two piston arms (12) are pivoted about the point (11) and carry at their ends four pistons (13). Each piston (13) has two faces so mounted to the piston arm (12) as to face tangentially one away from the other for alternate engagement with adjacent ends of two of the cylinders (10).
    Type: Application
    Filed: January 4, 2002
    Publication date: September 26, 2002
    Inventor: Brian Parker
  • Patent number: 6341590
    Abstract: A rotary engine including a static toroidal cavity having an inlet port for introducing fuel and air to the cavity and an outlet port for exhausting products of combustion from the cavity. A first power train including a first output shaft and a second power train including a second output shaft are located partially within the cavity and able to rotate in the first direction. A plurality of pistons are positioned around a perimeter of the toroidal cavity and between the first and second power trains. The plurality of pistons are movable with respect to the cavity and include a first set of pistons connected to rotate with the first power train and a second set of pistons connected to rotate with the second power train. The plurality of pistons defining a plurality of chambers therebetween.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: January 29, 2002
    Inventors: René Manuel Barrera, René Alejandro Barrera
  • Patent number: 6129068
    Abstract: A rotary engine (10) is provided having a housing (11), a rotor (34) mounted within the housing, an intake manifold 21, an exhaust manifold (33) and a reciprocating combustion containment valve (42). The rotor has a base (35) and a shoulder (36) extending from the base. A fuel injector (23), air injector (25) and spark plug (27) are all coupled to the intake manifold. The rotor is coupled to a cam (40) having a cam follower (43) thereon coupled to the combustion containment valve, whereby the movement of the combustion containment valve is synchronized with the movement of the rotor shoulder.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: October 10, 2000
    Inventor: John L. Wingate, Jr.
  • Patent number: 5203297
    Abstract: A rotary engine has a plurality of pistons rigidly connected as a single assembly, which pistons advance in a substantially toroidal chamber continuously along an annular path. Included in each of at least one firing position along this path is an inwardly projecting valve defining combustion zones within the chamber, and preventing communication between adjacent combustion zones. Also included in the firing positions are at least one exhaust port, an inlet port and valve, and a spark plug. Power may be taken from a central shaft along the axis of rotation of the piston assembly. The floor of the chamber comprises a movable wall which rises with increasing rotational speed to decrease effective engine displacement.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: April 20, 1993
    Inventor: Dennis D. Iversen
  • Patent number: 5138994
    Abstract: A supercharged rotary piston engine, which comprises a cylinder (1) with fluid conducting inlet and outlet channels (15, 16); an inner chamber (2) of the cylinder being ring-shaped. The inner chamber includes a supercharging section (10), a working stroke section (11) and an exhaust section (12). A main shaft (5) is rotatably positioned in the cylinder, and a rotary piston (3) in the inner chamber (2) is mounted coaxially with the main shaft (5) and is connected to and rotatable together with the main shaft (5) for driving the shaft. At least one stop valve (8) is disposed between the inlet and outlet channels, the stop valve sealingly closing the inner chamber when in the closed position, and the stop-valve when in the open position leaving the inner chamber free for the unhindered passage of the rotating piston. A supercharger (K) for supercharging fluid under a final compression pressure is disposed in the supercharging section (10) of the inner chamber (2) behind the rotating piston (3).
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: August 18, 1992
    Inventor: Laszlo Maday
  • Patent number: 5131359
    Abstract: Features of this apparatus include a carrier ring with attached concentrically rotating pistons which tangentially couple forces from expanding gasses to a power transfer means, a rotating head with windows to allow piston passage, fuel admittance and exhaust ports to provide fuel intake and combusted gas removal without using reciprocating action, a power transfer means to couple power from the rotating pistons to a power output shaft, a means of simultaneous fuel admittance and exhaust gas removal, a unique sealing apparatus, and a balanced firing arrangement where two or more pistons symmetrically arranged with respect to their axis of rotation are simultaneously forced by expanding gases to rotate about their center of rotation in a concentric fashion. These features enable the apparatus to utilize maximum torque through the entire power stroke, do not require reciprocating motion, eccentric piston surface motion or angular deflection.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: July 21, 1992
    Inventors: Thiel J. Gomm, Noal C. Messick
  • Patent number: 5046465
    Abstract: A rotary internal combustion engine which comprises a housing containing an axle, a pair of toroidal casings both containing a rotor with a piston disposed within the respective casings, an on/off valve for forming an ignition and explosion zone together with the piston disposed in the casings, and a gas outlet in the vicinity of the on/off valve disposed in the casings, whereby the rotation of the rotor within the internal combustion engine is achieved by transferring a compressed air-fuel mixture into the ignition and explosion zone, igniting the mixture and simultaneously, exploding, and exhausting the combusted gas through the gas outlet, thereby causing the rotation of the rotors together with the axle.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: September 10, 1991
    Inventor: Chong S. Yi
  • Patent number: 5009206
    Abstract: A rotary internal combustion engine which comprises a housing containing an axle, a pair of toroidal casings both disposed in parallel within the housing, the toroidal casings containing a rotor with a piston disposed within the casings, respectively, an on/off valve in a closed position for forming an ignition and explosion zone with the piston disposed in the casings, respectively, and a gas outlet in the on/off valve disposed in the casings, respectively, whereby the rotary internal combustion engine is achieved by continuously transferring a compressed air-fuel mixture into the ignition and explosion zone, igniting and simultaneously exploding the mixture continuously, and exhausting gases of combustion through the gas outlet in the closed valve position, and thereafter, the piston passes through the valve in an open position thereby causing rotation of the rotors with the axle.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: April 23, 1991
    Inventor: Chong S. Yi
  • Patent number: 4884537
    Abstract: A rotary internal combustion engine is disclosed having a rotor which includes at least one fuel peripheral cavity. The rotor effects a valve action with respect to fuel inlet and exhaust ports. A rotor housing includes a circumferential array of piston - cylinder assemblies cooperating with the fuel cavity and with the rotor for compressing fuel mixture and exhausting products of combustion. The engine includes at least four separate seal arrangements for confining compressed fuel to the combustion chamber and a method of effecting the seals.
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: December 5, 1989
    Assignee: Raul Castells
    Inventor: Jan Witkowski
  • Patent number: 4715338
    Abstract: A rotary type internal combustion engine including an outer housing in which a rotor is rotatably mounted, the rotor having at least one pocket formed in the periphery and in which combustion gases expand to drive the rotor. A oscillating member is mounted in an inner circumferential wall of the housing and engages the outer periphery of the rotor and enters the pocket as it passes, the oscillating member being hollow and co-operating with a stationary inner piston to form an expandable combustion chamber into which is admitted a fuel mixture for ignition by ignition means. The oscillating member has an outlet which permits most of the combustion gases to escape from the combustion chamber into the pocket of the rotor to provide a force between the reciprocating member and a leading surface of the pocket for driving the rotor.
    Type: Grant
    Filed: December 30, 1986
    Date of Patent: December 29, 1987
    Inventor: Raymond F. Pasquan
  • Patent number: 4667468
    Abstract: A rotary internal combustion engine has a housing with an elliptical inside surface surrounding an elliptical rotor forming with the housing combustion chambers. Valve and ignition assemblies connected to a source of air under pressure and injectors for introducing fuel into the air supply sequentially allows the air and fuel mixture to flow into the combustion chambers and ignite the air and fuel mixture therein. Vane and seal assemblies on the rotor and housing are controlled with cam and linkages to provide positive effective gas seals between the housing and rotor. A slack adjuster maintains lateral sealing relationships between the housing vane and seal assemblies and opposite side walls of the housing.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: May 26, 1987
    Assignee: Hansen Engine Corporation
    Inventor: Craig N. Hansen
  • Patent number: 4590761
    Abstract: A rotary engine comprises a circular rotor surrounded by an annular stator. The rotor is provided around its outer circumference with spaced combustion chambers and with recesses therebetween. Each recess serves as an expansion chamber for a jet of gas produced by combustion in an associated combustion chamber. Each recess is also provided, remote from the associated combustion chamber, with a cam. The stator at its inner circumference has retractible reaction members which are movable into the recesses to be acted on by the gas jet so as to create forces acting in opposite sense on the rotor and stator and thus cause the rotor to rotate. The reaction members have deflector surfaces arranged to deflect the gas jet in such a manner that the members are drawn into the recesses, the members being engaged by the cams during the rotor rotation and moved back into the stator.
    Type: Grant
    Filed: August 22, 1984
    Date of Patent: May 27, 1986
    Inventor: Michael Zettner
  • Patent number: 4137890
    Abstract: The Toroid Sweep Engine with Reciprocating Jut generates power within a toroidal-shaped chamber whose walls are divided into two ring-like sections which are free to rotate relative to one another around the toroid axis. An obstacle juts from each of the wall sections into the chamber. Fresh air is pumped at high pressure and high temperature into a region of the chamber between the two obstacles, and fuel is then injected into and burned in this region. The products of combustion force the obstacles apart, turning a wall section, and when the obstacles eventually meet after circumnavigation of the toroid, one of them withdraws from the chamber allowing the obstacles to pass. More fresh air and fuel are introduced between the again separating obstacles following the rendezvous, while spent gases from the previous burning are swept and squeezed out an exhaust duct leading from that volume within the chamber which is compressed between the obstacles.
    Type: Grant
    Filed: December 21, 1973
    Date of Patent: February 6, 1979
    Inventor: Stephen M. Wohl