Patents Examined by Timothy Thorpe
  • Patent number: 6203284
    Abstract: A compressor has a cam plate located in a crank chamber and mounted on a drive shaft and a piston coupled to the cam plate and located in a cylinder bore. The piston compresses gas supplied to the cylinder bore from a separate external circuit by way of a suction chamber and discharges the compressed gas to the external circuit by way of a discharge chamber. The cam plate is tiltable between a maximum inclined angle position and a minimum inclined angle position with respect to a plane perpendicular to an axis of the drive shaft according to a difference between the pressure in the crank chamber and the pressure in the cylinder bore. The piston moves by the stroke based on an inclination of the cam plate to control the displacement of the compressor. A valve is placed between the discharge chamber and the external circuit.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: March 20, 2001
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Masahiro Kawaguchi, Masanori Sonobe, Ken Suitou, Tetsuhiko Fukanuma, Hiroyuki Nagai, Yoshihiro Makino, Shintaro Miura
  • Patent number: 6116014
    Abstract: A support structure for securing a catalyst structure comprising a multiplicity of longitudinally disposed channels for passage of a flowing gas mixture within a reactor, said support structure being comprised of a monolithic open celled or honeycomb-like structure formed by thin strips or ribs of high temperature resistant metal or ceramic which abuts against one end of the catalyst structure, and extends in a direction perpendicular to the longitudinal axis of the catalyst structure to essentially cover an end face (at either the inlet end or outlet end or both) of the catalyst structure with the support structure being secured on its periphery to the reactor wall. The strips or ribs making up the support structure are bonded together to form a unitary structure having cellular openings at least as large as the catalyst structure channel openings.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: September 12, 2000
    Assignees: Catalytica, Inc., Tanaka Kikinzoku K.K., General Electric Company
    Inventors: Ralph A. Dalla Betta, James C. Schlatter, Martin Bernard Cutrone, Kenneth Winston Beebe
  • Patent number: 6059544
    Abstract: A cassette having, in a first embodiment, a series of break-off, prismatic tabs integrally formed in the cassette that can be optically sensed by the surgical instrument.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: May 9, 2000
    Assignee: Alcon Laboratories, Inc.
    Inventors: Christopher C. Jung, Nader Nazarifar
  • Patent number: 6056515
    Abstract: A vertically oriented hydrocleaning machine comprising a motor having a housing and a downwardly oriented vertical drive shaft, and an axial pump having a piston guide unit driven by the drive shaft. The motor housing includes a closure lid which defines a shaft support for the motor drive shaft, an annular bearing seat, and at least one reference surface for facilitating concentric aligned mounting of the piston guide on the motor, without the necessity for an intermediate mounting flange between the piston guide unit and motor. The illustrated motor closure lid further defines an oil sump chamber internally within the motor and a further annular seat within which a shaft sealing ring is disposed. The motor housing closure lid enables the piston guide unit to be quickly and precisely secured to the drive motor to produce a more compact and rigid high pressure washer.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: May 2, 2000
    Assignee: Officine Meccaniche F.A.I.P. S.r.l.
    Inventor: Carlo Alberto Cuneo
  • Patent number: 6027314
    Abstract: A pump, submerged in a fluid in a pump or well, has a buoyant outer, enclosing casing. Communicated to the casing are a conduit to supplying compressed air to the casing, a conduit for carrying the exhausted air away from the casing, an inlet and check valve for permitting entry of fluid into the casing, and an outlet and a check valve connected to discharge piping for carrying fluid away from the casing. The outer casing slides vertically relative to the discharge piping and is supported by the discharge piping for vertical movement between upper and lower stops where the casing actuates an air exhaust valve and a compressed air inlet valve. When the buoyant casing is in the upper position, air within the casing can escape through the open chamber air exhaust valve and compressed air entry is blocked to the casing through the closed compressed air inlet valve.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: February 22, 2000
    Inventor: Michael K. Breslin
  • Patent number: 6027318
    Abstract: A magnetically driven pump includes a pump chamber, an impeller held in the pump chamber so as to be rotatable about a central axis, a drive unit for rotatively driving the impeller, and a magnetic attraction system provided on the drive unit and impeller for rotating the impeller by mutual magnetic force. At least one of the first and second magnetic attraction devices is provided in parallel with the central axis and being provided also in front of and in back of the pump in the axial direction.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: February 22, 2000
    Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
    Inventors: Shizuo Shimanuki, Norio Sasaki
  • Patent number: 6007306
    Abstract: The invention relates to a pumping system for applying a sufficient pressure increase to multiphase effluents for them to be conveyed from a source such as an petroleum producing well to a remote destination point. To improve pump function and render management of effluent transfers more flexible, the system has a loop (7) for recycling a fraction of the multiphase effluents leaving pump (1) to the inlet thereof, comprising preferably a tap (5) such as a T formed to decrease the volumetric ratio GLR of the recycled effluents. A regulator such as a control valve (8) and a buffer tank and an element (9) such as an ejector-mixer are interposed in the loop to use part of the energy of the effluents tapped off. The invention has application for offshore pumping facilities.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: December 28, 1999
    Assignee: Institute Francais du Petrole
    Inventor: Regis Vilagines
  • Patent number: 5993172
    Abstract: An improved method and apparatus for pressure processing a pumpable substance are shown and described. In a preferred embodiment, a valve is coupled to a source of a pumpable substance and a pressure vessel, the valve being movable to a first, second and third position. When the valve is in a first position, an inlet port in the valve is aligned with a passageway that is open to the pressure vessel. When the valve is in the second position, the valve body seals the passageway, and when the valve is in the third position, an outlet port provided in the valve is aligned with the passageway.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: November 30, 1999
    Assignee: Flow International Corporation
    Inventors: Bruce M. Schuman, Edmund Y. Ting
  • Patent number: 5983780
    Abstract: A compressor includes front and rear cylinder blocks, a drive shaft rotatably supported by the cylinder blocks, a swash plate mounted on the drive shaft, a plurality of cylinder bores defined in the cylinder blocks and located around the drive shaft, and a plurality of pistons respectively disposed in the cylinder bores. The pistons reciprocate by converting rotation of the drive shaft with the swash plate. A plurality of compression chambers are defined in the cylinder bores for compressing the gas supplied to the cylinder bores in accordance with the reciprocating movement of the pistons. Each compression chamber has dead volume defined by a space having a predetermined volume when the associated piston is at top dead center in each cylinder bore. A reference capacity is defined by the capacity when the piston is at a bottom dead center of the cylinder bore that has the smallest dead volume.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: November 16, 1999
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Akira Nakamoto, Kazuhiro Nomura, Takanori Okabe, Naofumi Kimura, Hayato Ikeda, Hiroyuki Gennami, Hisato Kawamura, Junichi Toyama
  • Patent number: 5969907
    Abstract: A magnetic disk drive comprises a plurality of disks that have a laminated arrangement with equally fixed spaces respectively and are rotatably mounted a disk driving unit that forces the disks to rotate, a plurality of positioners mounted and movable in the direction of the tracks of the disks respectively, a positioner driving unit that drives the positioners so that their respective ends can traverse the tracks, and a plurality of reproducing/recording elements e.g., unitary magnetic heads that are fixed on the respective ends of the positioners and perform read/write operations for the surfaces of recording media of the disks, respectively. Each of the unitary magnetic heads is constructed such that each of said heads has a predetermined inclination is to the respectively corresponding surface of recording media of the disks, preferably by forming a sloping surface on one end of each positioner.Preferably, circuits for controlling the disk driving unit and the magnetic head, etc.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: October 19, 1999
    Assignee: Fujitsu Limited
    Inventors: Norio Yagi, Yoshihiro Arikawa, Kaho Nishimura
  • Patent number: 5957673
    Abstract: An injection pump for a diesel engine has a pump cylinder with a pump piston slideably mounted therein. The piston has a broadened foot portion. A cam is mounted on the camshaft and a rocker arm is mounted on a pivoting axis and has a camshaft end and a pump-side end. Means are provided for holding the camshaft end of the rocker arm in substantial contact with the cam. The pump-side end of the rocker arm has contact means for contacting the piston and moving the piston in the cylinder as the rocker arm is pivoted. The contact means includes means for loosely coupling the pump-side end of the rocker arm to the foot portion of the piston.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: September 28, 1999
    Assignee: Motorenfabrik Hatz GmbH & Co. KG.
    Inventors: Gunter Kampichler, Herbert Geier
  • Patent number: 5957668
    Abstract: A rotary pump system includes a rotary pump, a turbine for driving the pu and a coupling interconnecting a shaft of the turbine and a shaft of the pump. A speed monitoring system determines rotational speed of the pump shaft, is programmed with selected speeds for the pump during operation, and is adapted to send a signal responsive to a difference between the determined speed and the programmed speed. A brake is engageable with the coupling, and a brake valve is adapted to receive the signal and, in response thereto, to operate the brake to conform the speed of the pump to the programmed speed.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: September 28, 1999
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Paul E. Moody
  • Patent number: 5941690
    Abstract: A constant pressure variable speed inverter control booster pump system including a control unit, an inverter controlled by the control unit to change output frequency subject to the pressure of the water supply pipe, a motor controlled by the inverter to drive a pump, a pressure transmitter installed to detect the pressure in the water supply pipe, and a pump controlled by the motor to pump water through the water supply pipe, wherein the control unit detects the change of pressure in the water supply pipe, and provides an analog signal DC 0V-10V to the inverter subject to the detection result, causing the inverter to change output frequency to the motor, so as to control the speed of the motor under a constant range.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: August 24, 1999
    Inventor: Yung-Te Lin
  • Patent number: 5927951
    Abstract: The present invention is a disposable combination of tubing components for use with the roller pump that limits the negative pressure said pump generates (e.g. during left ventricular venting). The device consists of pump tubing and a shunt with resistance to flow placed between the inlet and outlet of the pump tubing. The device may also incorporate interconnecting tubing and a one way valve at the pump inlet tubing. The valve decreases the likelihood of pumping air or fluid into the ventricle with accidental pump reversal. In one preferred embodiment the device is called the Better-Ventera. The pump tubing of the device collapses more readily than tubing currently being used for either venting or suction applications, thus limiting the negative pressure generated by the pump to safer levels. In addition, the maximum suction generated by the pump is further limited by recirculation of flow between the pump inlet and outlet. The recirculation acts to "break" high suction.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: July 27, 1999
    Inventor: Yehuda Tamari
  • Patent number: 5927952
    Abstract: An apparatus for vacuum absorption comprising a tank for accumulating circulating water; a waterway for circulating the circulating water by a pump disposed at an absorption inlet side of the tank; an aspirator disposed on the waterway; a reverse flow prevention mechanism for preventing the circulating water from flowing reversely into a vacuum vessel connected to the aspirator during the stoppage of the pump and for introducing fresh air from the aspirator into the vacuum vessel. The outlet of the waterway is provided under the water surface of the circulating water in the tank, and the reverse flow prevention mechanism comprises a bypass tube leading from the upstream of the aspirator to the water surface in the tank, and a valve disposed in the bypass tube passing air only to the direction toward the aspirator.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: July 27, 1999
    Inventors: Hidetoshi Nishikawa, Keigo Arimoto, Kunio Kanai, Masayuki Kurematsu
  • Patent number: 5924852
    Abstract: A peristaltic pump for pumping liquids through a resilient tube. In one embodiment, the pump includes a curved concave platen against which a resilient tube is placed. A multi lobed cam is positioned adjacent to the platen and tube. A plurality of pump fingers are mounted between tube and cam in a manner permitting radial movement of the pump fingers. As the cam rotates, the fingers are pressed toward the tube sequentially so as to pump liquid through the tube. The lobe end should press the tube sufficiently to occlude the tube and prevent back flow without over pressing and damaging the tube. A transverse pinch finger is provided on each pump finger, extending from the tube pressing face of each pump finger. At the tube occluding position, the pump finger nearly occludes the tube and the pinch finger completes occlusion without pressing the tube beyond the fully occluded position. A fixed or slidable spring pressed pinch finger may be used.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: July 20, 1999
    Inventors: Ahmad-Maher Moubayed, Rogelio Blanco Jester
  • Patent number: 5911560
    Abstract: A getter pump module includes a number of getter disks provided with axial holes, and a heating element which extends through the holes to support and heat the getter disks. The getter disks are preferably solid, porous, sintered getter disks that are provided with a titanium hub that engages the heating element. A thermally isolating shield is provided to shield the getter disks from heat sources and heat sinks within the chamber, and to aid in the rapid regeneration of the getter disks. In certain embodiments of the present invention the heat shields are fixed, and in other embodiments the heat shield is movable. An embodiment of the present invention also provides for a rotating getter element to enhance getter material utilization.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: June 15, 1999
    Assignee: SAES Pure Gas, Inc.
    Inventors: Gordon Krueger, D'Arcy H. Lorimer, Sergio Carella, Andrea Conte
  • Patent number: 5902096
    Abstract: An integral valve diaphragm pump has a first rigid layer, a second rigid layer and a flexible membrane therebetween. Concave surfaces in the two rigid layers form a pump. The pump includes an actuating chamber which is alternately connected to a source of pressure and a source of vacuum. A pump chamber is connected to a fluid source and a fluid receiver through a filling check valve and a dispensing check valve, respectively. Duckbill and spring loaded ball check valves are disclosed.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: May 11, 1999
    Assignee: Bayer Corporation
    Inventors: Bruce E. Behringer, James A. Mawhirt
  • Patent number: 5899668
    Abstract: A two-stage liquid ring pump has an interstage structure which promotes separation of the gas and liquid discharged from the first stage. The second stage has separate gas and liquid inlets for respectively admitting the separated gas and liquid to the second stage. This avoids any possible choking of the second stage gas inlet by liquid, thereby improving the performance of the pump.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: May 4, 1999
    Assignee: The Nash Engineering Company
    Inventors: Ramesh B. Shenoi, Carl G. Dudeck
  • Patent number: 5895207
    Abstract: An assembly, consisting of a motor and a pump, the motor being arranged in a motor housing and the pump in a pump housing. Both housings can be coupled to each other. The motor housing is provided with a second main bearing. The pump housing is equipped with a pump bearing. During normal operation, the forces acting on the pump eccentric are essentially supported by the main bearing and the pump bearing. The bearing forces are introduced into the pump housing. If the motor housing is not fastened to the pump housing, the rotor shaft is supported by the main bearing and, if necessary, an accessory bearing. Thus the motor can be tested without being connected to the pump housing.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: April 20, 1999
    Assignee: ITT Automotive Europe, GmbH
    Inventors: Jochen Burgdorf, Peter Volz, Hans-Dieter Reinartz, Dieter Dinkel