Patents Examined by Richard E. Gluck
  • Patent number: 6015268
    Abstract: A precision metering, multiple fluid pumping system comprised of a main pump for pumping a primary fluid and an auxiliary pump for pumping a secondary fluid adjustably linked to work in unison with the main pump. The auxiliary pump is linked to the main pump through a rack and pinion gear system connected to an oscillating arm that operates the auxiliary pump simultaneously with the main pump. The auxiliary pump is infinitely adjustable over a selected range by varying the connecting point of the auxiliary pump to the oscillating arm. The connecting point is varied by a worm screw adjustment that provides precision adjustment and metering of a secondary fluid. The system also includes a clutch mechanism between the auxiliary pump oscillating arm and a rack and pinion gear system to disengage the auxiliary pump for priming.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: January 18, 2000
    Assignee: Illinois Tool Works Inc.
    Inventor: Robert D. Hetherington
  • Patent number: 5860793
    Abstract: A new and improved diaphragm metering pump is provided with a modular removable drive assembly. The removable drive assembly provides rotation to an eccentric shaft within the pump and is disposed outside rotary bearings for the eccentric shaft and outside sealing elements containing hydraulic fluid in the pump housing. In a preferred embodiment, a readily accessible mechanically activated hydraulic refill valve cartridge is provided to hydraulically balance the diaphragm. In a preferred embodiment, a push to prime air bleeder valve is provided permitting automatic priming of the hydraulic system without requiring disconnection of any valves. The pump is designed to interchangeably receive a number of diaphragm assemblies including an improved leak detection diaphragm and a double-sided leak detection diaphragm. In a preferred embodiment, a diagnostics window is provided permitting visual inspection of the operating condition of various valves connected to the hydraulic system.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: January 19, 1999
    Assignee: Pulsafeeder, Inc.
    Inventors: Stephen B. Muscarella, Philip T. Pascoe, Francis J. Snyder
  • Patent number: 5836745
    Abstract: An apparatus for recovering fluid from a liquid formation includes a submersible pump for pumping fluid from the liquid formation. The submersible pump is coupled to an eductor defining a fluid member for receiving and transporting the fluid from the pump, and a fluid inlet in fluid communication with the fluid member for placement at a liquid-product layer in the formation. A probe assembly is coupled to the eductor for ensuring that the pump is inoperative when the fluid level in the formation is low. In operation, a motive force created by the upward flow of fluid pumped through the fluid member draws additional fluid into the fluid inlet from the liquid-product layer. The fluid entering the fluid inlet merges with the fluid flowing through the fluid member and is transported to a treatment facility.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: November 17, 1998
    Assignee: Sippican, Inc.
    Inventors: David K. Brogan, John R. Couture, Michael M. Gifford
  • Patent number: 5823751
    Abstract: The invention concerns a device for mounting and keeping together parts in a submersible pump unit.Two groups of screw joints (15) and (16) respectively are alternatively arranged around the periphery of the pump unit, the first group of said joints (15) connectings the stator housing (8) and the seal housing (4) via a ring (13), while the other group of joints (16) connect said ring (13), said pump housing (5) and a cooling jacket (10) surrounding said stator housing (8).
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: October 20, 1998
    Assignee: ITT Flygt AB
    Inventors: Torbjorn Sjoblom, Bjorn Unden
  • Patent number: 5803713
    Abstract: A multiple stage axial flow liquid ring vacuum pump having pumping stages integrated in a single rotor rotating around a central port cylinder with multiple inlet and discharge ports, with axial flow arrangement enabling the pump to achieve higher vacuum than that obtainable by existing single-stage and two-stage pump designs.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: September 8, 1998
    Inventor: Henry Huse
  • Patent number: 5800132
    Abstract: An electric motor is connected via cog belt to a dual purpose pulley on the water pump of an automobile, to increase power available from the engine so that during racing maximum horsepower can be achieved. Enhanced cooling of the engine is also obtained.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: September 1, 1998
    Inventor: Gregory A. Marietti
  • Patent number: 5795135
    Abstract: A sub-sea pumping system for pumping an effluent from a deep-sea wellhead comprising a topside module, a sub-sea module, and an umbilical connection between the topside and sub-sea modules. The umbilical connection comprises a threephase electrical power line and an hydraulic fluid supply line to an electrical canned motor. The hydraulic fluid is a single medium fluid, is compatible with the effluent being pumped, and is circulated through the sub-sea module for cooling and for lubricating the seal and bearing arrangements of the motor and the pump. The hydraulic fluid is circulated through a submerged pressure compensator which includes a metal bellows assembly. The compensator is responsive to the pressure of the effluent being pumped and pressurizes the hydraulic fluid flowing through the motor and the pump for the cooling and the lubricating of their respective seal and bearing arrangements at a pressure above the pressure of the effluent being pumped.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: August 18, 1998
    Assignee: Westinghouse Electric Corp.
    Inventors: Charles P. Nyilas, Clifford H. Campen, Jr., Joseph M. Kujawski
  • Patent number: 5795127
    Abstract: A self-priming, vertical-shaft centrifugal pump having an impeller design which creates an upward thrust and which is heavy enough to carry an engine having a standard weight flywheel through a compression stroke. The pump is comprised of a vertical-shaft engine mounted onto a pump housing. The pump housing includes an inlet chamber, a pumping chamber, and a separation chamber. The shaft of the engine protrudes into the pumping chamber and is mounted to an impeller which rotates within the pumping chamber. The pump draws liquid into the pumping chamber from an inlet communicating liquid entrained with gas to the pump. The impeller uses centrifugal force to pump the liquid and gas mixture out of the pumping chamber and into the separation chamber.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: August 18, 1998
    Assignee: Tecumseh Products Company
    Inventor: David M. DeClerck
  • Patent number: 5788469
    Abstract: A fuel injection system for injecting gasoline or other fuel directly into the combustion chambers of an internal combustion engine includes a fuel pump having a fixed barrel member therein which has a plurality of bores forming cylinders extending therethrough. A pumping piston extends into one open end of each of the cylinder bores. The piston is supported for reciprocal movements as produced by an input mechanism, such as a shaft and swash plate. A fluid inlet passage and inlet check valve are positioned at one end portion of each piston so that fluid can be drawn into the pumping chamber formed by the cylinder bore and piston. The other open end of the cylinder bore in the barrel member serves as an outlet for fluid from the pumping chamber and a flat reed valve portion of an outlet valve plate overlies the open end to prevent fludi from reentering the pumping chamber during an inletting stroke.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: August 4, 1998
    Assignee: Chrysler Corporation
    Inventors: Margaret C. Novacek, Gregg T. Black
  • Patent number: 5769615
    Abstract: A single-piston, multimode fluid displacement pump comprising an elongated chamber, a piston reciprocally mounted within the chamber, a driving mechanism axially aligned with the chamber and piston for accurately positioning the piston within the chamber so as to define a measured fluid displacement, and ports for aspirating and dispensing fluid.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: June 23, 1998
    Inventor: Gershon Giter
  • Patent number: 5769614
    Abstract: A high-pressure pump having a high-pressure cylinder which has a vertically moving plunger fitted therein from the upper side thereof. The high-pressure cylinder has at least one opening in the bottommost portion thereof to allow a fluid to flow in or out of the high-pressure cylinder. A hydraulic cylinder for driving the plunger is provided on the top of the high-pressure cylinder. In addition, a migration preventing device is provided between the hydraulic cylinder and the high-pressure cylinder and in contact with the plunger driving shaft to prevent migration of a working fluid leaking out from the hydraulic cylinder to the surface of the plunger fitted in the high-pressure cylinder.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: June 23, 1998
    Inventor: Yukihiko Karasawa
  • Patent number: 5765996
    Abstract: A compressor has a plurality of cylinder bores defined around a rotary shaft in a cylinder block and a plurality of double-headed pistons accommodated in the respective cylinder bores. The pistons compress refrigerant gas in a plurality of front and rear compression chambers defined in the bores in the front and rear of the respective pistons according to the rotation of a cam plate mounted on the rotary shaft. The compressor has bearing that receive thrust loads applied to the rotary shaft during operation of the compressor. The pistons create a net thrust load determined by the difference between the maximum of the sum of loads applied to the front sides of the pistons by the refrigerant gas in the front compression chambers and the maximum of the sum of loads applied to the rear sides of the pistons by the refrigerant gas in the rear compression chambers. The pistons transfer the net thrust load to the rotary shaft in a predetermined direction.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: June 16, 1998
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Toshiro Fujii, Koichi Ito, Kazuaki Iwama, Katsuya Ohyama
  • Patent number: 5762478
    Abstract: A reciprocating compressor includes a cylindrical bore in which a piston reciprocates. A cylinder head is situated adjacent an end of the bore and forms a suction chamber and a discharge chamber which communicate with the bore through respective valved passages. Fluid to be compressed enters the suction chamber through an outlet section of a muffler. That outlet section is made of a material having low thermal conductivity (plastic) and fits into the suction chamber to resist the transfer of heat to the suction chamber from the discharge chamber. A capillary tube includes an inlet end submerged in an oil reservoir and an outlet end mounted in a hole formed in the outlet section of the muffler for supplying oil to fluid entering the bore.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: June 9, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sung-Tae Lee
  • Patent number: 5752812
    Abstract: A vapor recovery pump for pumping flammable vapors is disclosed. The pump includes a pump unit that defines a pump chamber into which the vapor is first drawn and then exhausted from. A motor contained in a motor housing provides the motive force for energizing the pump unit. A single-piece inboard head seals the pump chamber and the motor housing and spaces the pump chamber away from the motor. Removable flame arrestor assemblies are attached to the inlet and outlet ports into which the vapor is, respectively, drawn into and exhausted from. A gland assembly integral with the motor housing provides a seal around the conductors that extend to the motor.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: May 19, 1998
    Assignee: Delaware Capital Formation, Inc.
    Inventor: Stephen C. Brown
  • Patent number: 5752806
    Abstract: The internally axed single-rotation machine has inlet and outlet channels , 6), which extend arcuately round the circular cylindrical housing space (11) enclosing the rotors (1, 2) to such an extent that the tangentially connecting inlet and outlet connections (12, 13) cross and the outlet channel (6) extends over part of the inlet channel (5). In the vicinity of this approach between the outlet and inlet channels (6, 5) there is a flow connection (19), which continues the arcuate shape of the outlet channel (6) to that of the inlet channel (5). The gas pressure in the outlet channel (6) is variable by a control element (20) located in said flow connection (19). The single-rotation machine pressure control is associated with minimum noise generation and minimum flow losses and a particularly compact construction is obtained.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: May 19, 1998
    Assignee: TES Wankel Technische Forschungs-und Entwicklungsstelle Lindau GmbH
    Inventors: Michael Frey, Frank Obrist
  • Patent number: 5752814
    Abstract: A plunger or traveling valve and seal for a well pump and an oil well pump in particular, which plunger includes a mandrel of selected length, at least one plastic sleeve fitted with at least one metal insert mounted on the mandrel for sealing the mandrel in a pump barrel and a ball and seat valve provided on at least one end of the mandrel. The plunger may include fiber rings and ring holders and is seated inside a conventional pump barrel and the plastic sleeve serves to seal the plunger as the plunger reciprocates in the barrel. The plastic seal is typically constructed of ultra-high molecular weight polyethylene with one or two flanged, typically brass, inserts tightly mounted in the plastic seal bore to control or limit thermal expansion in the plastic seal.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: May 19, 1998
    Inventors: Jimmy A. Starks, Billy J. Edwards
  • Patent number: 5749717
    Abstract: A pump for a fuel injection system, the pump primarily including a pump body having a pumping chamber and a pump body end portion, a control valve disposed in a control valve chamber, a reciprocatable plunger, and a cylindrical sleeve having first and second end portions. The first end portion of the sleeve interfits with the pump body end portion. The second end portion of the sleeve slidably interfits with a cam follower assembly for allowing the cam follower assembly to drive the plunger. The plunger is reciprocated with respect to the sleeve over a stroke range between an extended position and a retracted position. A plunger spring biases the plunger to the retracted position. The pump body end portion is press-fit into the first end portion of the sleeve, and sufficiently induces compressive forces in the pump body for acting on the pumping chamber to oppose pumping chamber expansive forces.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: May 12, 1998
    Assignee: Deisel Technology Company
    Inventors: Robert D. Straub, Richard Frederic Teerman, Thomas M. Stegink, Daniel B. Ogren
  • Patent number: 5729984
    Abstract: The present invention relates to an evaporative transpiration pump having an inlet for liquids, an outlet for gases, a porous body disposed between the inlet and the outlet. A heating means is disposed at the outlet side of the porous body. The thermal conductivity of the porous body is no greater than 5 Wm.sup.-1 K.sup.-1 and is preferably no greater than 1 Wm.sup.-1 K.sup.-1. The pump is particularly suitable for use in multi-column cryodistillation apparatus.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: March 24, 1998
    Assignee: European Atomic Energy Community (Euratom)
    Inventors: Johann Ludwig Hemmerrich, Paul Milverton
  • Patent number: 5730587
    Abstract: An improved dual air pump in which the diaphragm elements of the pump that cover the pump chamber are connected to an elastic band which is shaped as an inverted U, having magnet mounting surfaces provided proximate the extremities of the downwardly depending sides of the band. Support of this vibrating structure is obtained solely from the diaphragms themselves which are attached proximate the center of the sides of the elastic band. The magnetic mounting surfaces of the elastic band are superimposed over a conventional electromagnetic drive unit which, when energized with an alternating voltage, will alternately attract and repel the permanent magnets mounted on the magnet mounting surfaces so as to alternately extend and compress the flexible diaphragm elements to create a pumping action.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: March 24, 1998
    Assignee: Apollo Enterprises, Inc.
    Inventors: Larry R. Snyder, Ivar Schoenmeyer
  • Patent number: 5727932
    Abstract: An electromagnetic reciprocating compressor has a body (1, 2), a piston (10) reciprocating in a cylinder (12) in the body and a piston guide (14) in the form of an insert which is radially located relative to the axis of the cylinder (12) by fitting against a registration surface (25a), the registration surface is on a body part (1) which also provides the internal cylinder surface (12a) of the cylinder. To improve the alignment of the insert (14), the registration surface (25a) and the internal cylinder surface (12a) are formed to their respective final diameters in the same machining operation by reference to a common axis. The piston guide (14) is axially located related to the cylinder (12) by being resiliently clamped between the stator (23) and an end portion (27a) of the body (1, 2) opposed to the stator (23) with a resilient member (27) interposed between the body end portion (27a) and the piston guide (14).
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: March 17, 1998
    Assignee: Pegasus Airwave Limited
    Inventor: Michael Alan McGrath