Patents Examined by O. T. Sessions
  • Patent number: 3969044
    Abstract: A fuel pump assembly wherein an elongated tubular housing surrounds a fuel pump and an electric motor and has a fuel-admitting inlet at one end and a fuel-discharging outlet at the other end. The rotor of the electric motor drives the pump rotor through the medium of several axially parallel elastic pins which extend into complementary sockets of the pump rotor. The pump rotor rotates directly on a shaft which is fixedly mounted in the housing. The rotor of the electric motor rotates on several friction bearings consisting of sinter metal and surrounding the fixedly mounted shaft. The pins form part of an elastomeric casing which surrounds a portion of or the entire rotor of the electric motor. Some fuel flows from the pressure side of the pump into an annular space between the shaft and the pump rotor and thence toward the outlet by flowing through the bearings as well as through a sleeve which supports the rotor of the electric motor and rotates with the bearings.
    Type: Grant
    Filed: January 18, 1974
    Date of Patent: July 13, 1976
    Assignee: Robert Bosch G.m.b.H.
    Inventors: Paul Fussner, Horst Salmanzig
  • Patent number: 3968736
    Abstract: A radial type of fluid-pressure apparatus, such as a pump or motor, wherein a crankshaft is supported for rotation about its axis and has a crankpin radially spaced from its axis and connected with the inner end region of a piston which extends outwardly away from the crankshaft axis and which has an outer end region extending into a chamber of an outer housing structure which surrounds the crankshaft axis. This chamber communicates with a fluid passage. An inner circular housing structure is surrounded by the outer housing structure and surrounds the crankshaft while being formed with an opening through which the piston extends, this inner housing structure having a seat at its opening which surrounds the piston. The latter seat forms part of a sphere. The piston extends slidably through a sleeve which has an outer surface also forming part of the latter sphere and seated on this seat.
    Type: Grant
    Filed: May 20, 1974
    Date of Patent: July 13, 1976
    Inventor: Felice Pecorari
  • Patent number: 3966369
    Abstract: An improved positive displacement motor suitable for use in downhole drilling at the end of a drill string and driven by fluid, e.g., liquid mud, under high pressures. The motor has a novel arrangement of inlet and outlet ports in longitudinally extending circumferentially spaced rows for providing fluid at a substantially uniform pressure along substantially the length of the blades driving the motor so as to equalize the driving torque along the length of the rotor and avoid pressure differentials tending to twist the blade. A continuous ring isolates the adjacent rows of inlet and outlet ports.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: June 29, 1976
    Assignee: Empire Oil Tool Company
    Inventor: Marion A. Garrison
  • Patent number: 3964451
    Abstract: An internal combustion engine provided with a supercharging system in which each cylinder head of the engine cylinders is provided with a valve controlled subordinate port connected to a pressurized intake air supply source, and valve actuating means actuates each valve of the subordinate inlet ports shortly before the piston within each cylinder comes into a compression stroke thereof so that the pressurized air flowing into the cylinder agitates and attenuates the fuel mixture sucked from the valve controlled inlet port.
    Type: Grant
    Filed: December 13, 1973
    Date of Patent: June 22, 1976
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventor: Kenji Goto
  • Patent number: 3963391
    Abstract: A method and apparatus for controlling speed and torque of hand held air driven vane type motors is available in several embodiments. For example, one embodiment is used in tool and die work and another embodiment is used in dental work. In reference to the latter, a foot operated control regulates the speed of an air driven handpiece, driving in turn various tools such as cutters and drills as they are generally used in a dental laboratory, by regulating the flow of compressed air both to and from the handpiece. Application of an operator's foot pressure on a floor level foot control, simultaneously depresses two valves which control the flow of compressed air. One valve controls the flow of compressed air from its source to the handpiece, and one valve controls the release into the atmosphere of compressed air from the handpiece.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: June 15, 1976
    Inventors: Fred E. Thorburn, T. Michael Thorburn
  • Patent number: 3960466
    Abstract: The invention is concerned with a peristaltic action pump useful for douche and enema purposes and capable of delivering a uniform flow of liquid. The pump comprises a flexible tube affixed in a hemicircular shape and having a fluid input port at one end thereof and a fluid exit port at the other end thereof. A rotatable member is provided adjacent to and generally parallel to the plane of the hemicircle, the rotatable member being rotatable about an axis in line with the axis of the hemicircle. Means are also provided, coupled with the rotatable member for rotatingly driving it. A pair of levers are provided pivotally mounted intermediate thereof to the rotatable member, each at an equal and non-zero distance from the rotational axis of the member, a line from the mounting of one of the pair of levers to the mounting of the other of the pair of levers passing through the rotational axis of the member.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: June 1, 1976
    Inventor: Edward J. Taylor
  • Patent number: 3955902
    Abstract: Pump with a housing comprising an internal surface and a rotor with two opposite rollers compressing a flexible tube between the rollers and the internal surface, the internal surface being part of a cone and the rollers being truncated cones in order to provide adjustment means for the compression of the tube and to provide regulating means for the pump capacity independently of the rotational speed of the rotor.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: May 11, 1976
    Inventor: Erik Bach Kyvsgaard
  • Patent number: 3955540
    Abstract: A rotary internal combustion engine which includes a housing having a cylindrical inner peripheral wall surface, a hollow, cylindrical rotor rotatably shaft-mounted in the housing in eccentric relationship with respect to the housing, a cylindrical vane track positioned in the hollow cavity of the rotor and located in the center of the housing, and vanes slidably and radially disposed in the walls of the rotor and adapted to traverse the vane track and inner peripheral wall surface of the housing as the rotor rotates. The rotor and vanes cooperate with the housing to define a plurality of chambers which become successively smaller as they are charged with fuel and approach the firing area of the housing, and larger after combustion as they approach the exhaust and intake segments of the housing.
    Type: Grant
    Filed: May 22, 1974
    Date of Patent: May 11, 1976
    Inventor: James G. Blanchard
  • Patent number: 3953160
    Abstract: A gear pump or motor includes a housing having an 8-shaped chamber, a pair of meshed gears in the chamber and a pair of ports opening into the chamber on opposite sides of the zone of mesh of the gears. The teeth of the gears have on their non-working flanks relieved portions adjacent the tip and the root of the tooth which are arranged to leave an unrelieved land across the entire non-working flank.
    Type: Grant
    Filed: March 12, 1974
    Date of Patent: April 27, 1976
    Assignee: Lucas Aerospace Limited
    Inventor: Harry Simister Bottoms
  • Patent number: 3951109
    Abstract: A rotary internal combustion engine with the rotor having separate power and compressor sections in side-by-side relation secured to the same shaft so that they rotate together and are separated by a separating plate. These sections have, at their outer periphery, members that move laterally into engagement with the wall of the stator within which the rotor rotates. The separating plate rotates with the rotor sections and has an opening through which a compressed gas charge is conveyed from the compressor section into the power section.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: April 20, 1976
    Inventor: Robert A. Chappellier
  • Patent number: 3951110
    Abstract: A rotary internal combustion engine wherein the compression and the power functions are produced by a single rotor with the compression function being achieved by means of vanes that move longitudinally of the axis of rotation of the rotor and cooperate with complimentary recesses and with the power function being achieved by means of members that move laterally of said axis of rotation and cooperate with the periphery of the stator.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: April 20, 1976
    Inventor: Robert A. Chappellier
  • Patent number: 3950117
    Abstract: The present invention refers to a machine with rotary articulated pistons, which work within a cylindrical chamber. The machine could equally be a motor, compressor or pump to achieve transformations of energy.
    Type: Grant
    Filed: March 4, 1974
    Date of Patent: April 13, 1976
    Inventor: Jose Ignacio Martin Artajo
  • Patent number: 3947149
    Abstract: In a peripheral fluid pump designed for operation submerged in a vehicle fuel tank and comprising an impeller raceway with an outer annular channel, appropriately placed stripper abutments and an inlet and outlet on opposite sides of the raceway in communication with the annular channel, an impeller in the raceway has a hub and a plurality of vanes projecting radially outward into the annular channel. Each vane has front and rear sides in the direction of impeller rotation which are parallel to the axis of impeller rotation, an inlet side adjacent the inlet side of the pump forming an acute angle with the front side and an outlet side adjacent the outlet side of the pump forming an acute angle with the rear side.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: March 30, 1976
    Assignee: General Motors Corporation
    Inventor: Daniel C. MacManus
  • Patent number: 3947158
    Abstract: An oil well subsurface pump comprising a plunger reciprocally disposed within a working barrel and having check valve means carried thereby, metallic ring means provided on the outer periphery of the plunger for engaging the inner periphery of the working barrel, resilient sleeve or cup means disposed around the outer periphery of the plunger and having one end in engagement with the ring means, means threadedly secured to the outer periphery of the plunger for engaging the opposite end of the resilient means for applying selected longitudinal pressure thereon for radial expansion thereof into engagement with the inner periphery of the working barrel.
    Type: Grant
    Filed: May 13, 1974
    Date of Patent: March 30, 1976
    Inventor: Lonnie L. Gage
  • Patent number: 3945359
    Abstract: A rotary internal combustion engine which includes a plurality of cylinders equiangularly mounted around a central rotary valve assembly on an axial horizontal shaft, in which more complete combustion and less emission of unburnt gases is achieved. The engine embodies a valving rotor comprising horizontally spaced discs having two properly located intake and exhaust valve passages and related generally cup-shaped intake/exhaust guide means eccentrically mounted on the shaft. This arrangement together with correspondingly horizontally spaced intake/exhaust ports in the respective cylinders, provides for dual intake charges and for the exhaust gas to be discharged twice and more completely in a single exhaust stroke via the properly located exhaust valves. The exhaust valves, which are also in the horizontally spaced rotor discs, are circumferentially displaced from the respective intake valves and also from each other.
    Type: Grant
    Filed: November 27, 1973
    Date of Patent: March 23, 1976
    Inventor: Ryuzi Asaga
  • Patent number: 3942920
    Abstract: A rotary fluid pump rotor is not eccentrically rotated relative to a casing and as a consequence an eccentric load is not loaded on the shaft and bearing. The fluid pump of the invention may use a seal ring in order to maintain fluids air-tight for effective operation.
    Type: Grant
    Filed: November 29, 1974
    Date of Patent: March 9, 1976
    Assignee: Nippon Piston Ring Co., Ltd.
    Inventor: Hiroshi Sakamaki
  • Patent number: 3941519
    Abstract: A reciprocating type pump has a pair of body members with complementary concave and convex surfaces which clamp a flexible sheet means therebetween to hold the same in curved configuration. The member having the convex surface has a pump chamber opening toward the flexible sheet means and the concave member has inlet and outlet passages opening toward the flexible sheet. The flexible sheet has portions overlying such inlet and outlet passages and the overlying portions have free edge portions extending in the direction of curvature of the flexible sheet and adapted to be flexed toward said convex surface member by fluid pressure from said passages whereby the overlying portions of the flexible sheet are reversely curved under the force of said fluid pressure and return resiliently to original passage closing condition when such pressure is not acting thereagainst.
    Type: Grant
    Filed: September 12, 1974
    Date of Patent: March 2, 1976
    Inventor: Herbert J. McCauley
  • Patent number: 3938912
    Abstract: There is disclosed a horizontal type hydrohoist, in which slurry is forced to feed under lower pressure into feed pipes which are connected to a transport pipeline at their one ends and to a high pressure clear water pump at the others, said pump being adapted to deliver clear water under a high pressure, after which clear water is transferred under a high pressure through said feed pipe from said high pressure clear water pump, thereby transferring said slurry. This hydrohoist system presents the provision of means for preventing mixing and its spreading at the boundary portion between slurry and water within the feed pipes. More particularly, a separator which is designed not to rotate during the transfer is inserted in the aforesaid boundary portion in a manner that the separator may be transferred together with fluid, thus preventing the mixing of water with slurry as well as the resultant spreading thereof.
    Type: Grant
    Filed: March 1, 1974
    Date of Patent: February 17, 1976
    Assignees: Hitachi, Ltd., Showa Denko K.K., Hitachi Sanki Engineering Co., Ltd.
    Inventors: Masakatsu Sakamoto, Kenji Uchida, Makoto Saito, Yasunori Yamada, Yoshiyuki Takenaka
  • Patent number: 3938425
    Abstract: A piston type fluid pump structure providing a selective variable operating fluid displacement, and including a piston having an operable travel, within a cooperable cylinder bore, through a pump stroke which may be of fixed length, a fluid supply port being provided which communicates with the interior of the cylinder bore when the piston is in a retracted position and a fluid outlet port communicating with interior of said bore through which fluid therein may be discharged during such pump stroke, an expansion chamber being provided in communication with the cylinder bore adjacent the discharge port therein, the effective volume of the expansion chamber being selectively variable whereby the output displacement of said pump structure may be varied by controlling the volume of said expansion chamber, and therewith the amount of fluid received therein during a pump stroke.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: February 17, 1976
    Assignee: Houdaille Industries, Inc.
    Inventor: Kenneth K. Kroffke
  • Patent number: 3937186
    Abstract: A trochoidal type rotary internal combustion engine wherein the intake port is controlled by the rotor, and variation in the fuel feed is provided by a slidable valve member in the intake pipe, which in closed position seats very close to the peripheral surface of the engine cavity to prevent entry of exhaust gas into the intake line at idling or low load conditions, the valve being controlled by a foot pedal or other conventional adjusting means.
    Type: Grant
    Filed: May 23, 1974
    Date of Patent: February 10, 1976
    Assignees: Audi NSU Auto Union Aktiengesellschaft, Wankel G.m.b.H.
    Inventors: Dieter Stock, Johannes Steinwart