Patents Examined by Richard A. Bertsch
  • Patent number: 5511376
    Abstract: A convergent/divergent nozzle (14) has five trains of flaps. Each train is comprised of an inboard (26) and outboard (20) convergent flap, an inboard (48) and outboard (44) divergent flap and an external flap (62). The five external flaps (62) maintain their symmetry while vectoring, whereby overlapping of adjacent flaps is obtained. The inboard and outboard convergent flaps are individually driven (32,36) by a common unison ring (28).
    Type: Grant
    Filed: November 1, 1994
    Date of Patent: April 30, 1996
    Assignee: United Technologies Corporation
    Inventor: William K. Barcza
  • Patent number: 5509789
    Abstract: Single-stage liquid ring gas pump which can be flanged to a drive unit. The suction and delivery connections are disposed on a connection casing (3) which is to be connected to the drive unit. On the side of the connection casing remote from the drive are disposed a plate cam (4) and a working chamber casing (5) together with the impeller (14) rotating in the latter. The impeller sealingly cooperates on its open end face with the plate cam and on its largely closed end face (19) with an end wall (7) of the working chamber casing (5). The working chamber casing is in the form of a deep-drawn sheet metal part and has no medium connections. For the purpose of connection to the connection casing or the plate cam, it is provided with a radial connection flange (6). The transition from the cylindrical part to the connection flange (6) of the working chamber casing (5) is rounded on the inside such that the gap remaining between this rounding and the plate cam remains below a particular size.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: April 23, 1996
    Assignee: Sihi GmbH & Co KG
    Inventors: Udo Segebrecht, Klaus Domagalla
  • Patent number: 5509787
    Abstract: An hydraulic actuator of a constant pressure fluidic supply system is disclosed in which a movable shuttle disposed within a generally cylindrical housing forms therewith a plurality of piston and cylinder assemblies. Displacement of the shuttle within the housing is governed substantially by opposing hydrodynamic and hydrostatic forces balanced so as to selectively isolate a pump control pressure switch from system pressure during periods of moderate to high consumption demand and provide communication therewith during periods of low to zero consumption demand. An hydropneumatic tank or a conventional diaphragm tank may be used in combination with the actuator to provide fluidic capacitance to the system. Additional system valving and pressure regulation may be incorporated as desired.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: April 23, 1996
    Inventor: Osvaldo J. Valdes
  • Patent number: 5509394
    Abstract: An internal combustion engine with a supercharger, of a reciprocating piston type, having a supercharger disposed in an intake passage, wherein the relation of a pressure ratio (.gamma.=P/Po) of pressure (P) on the discharge side of the supercharger to atmospheric pressure (Po) at the time of high load with a geometric compression ratio (.epsilon.) of the engine and a cylinder bore size (B), represented by millimeter, satisfies the following formula:.gamma..gtoreq.-0.29.epsilon.+6.0-0.022B.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: April 23, 1996
    Assignee: Mazda Motor Corporation
    Inventors: Mitsuo Hitomi, Kenji Kashiyama, Shunji Masuda
  • Patent number: 5509791
    Abstract: A pump for use in a bath of reactive molten metal such as zinc has a graphite rotor, driven at constant speed, and capable of pumping molten metal at selective rates from the bath. The pump includes an internal delivery flow path and protected drive shaft, so that the liquid metal of the bath is not turbulated by the rotating shaft, and the temperature of the metal within the pump, during semi-quiescent periods is maintained substantially constant. The pump has a robust structure and yet can handle rates as low as 10 to 15 pounds per minute, in contrast to usual types of pumps that require pumping about 80 pounds per minute, and being speed controlled, are less accurate in their delivery rates. An adjustable control for regulating flow rate during operation also is provided.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: April 23, 1996
    Inventor: Ogden L. Turner
  • Patent number: 5509788
    Abstract: The present invention is an improved flow-metered pumping system using an air-backed diaphragm pump with load compensation. A variable motor speed controller is used to compensate for flow rate reduction caused by pressure effects. When the output pressure on the pump increases to a point where the load on the pump motor exceeds a specified threshold, the motor speed controller increases the speed of the motor to compensate for pressure induced diaphragm distortion losses and to achieve a substantially constant flow rate across a range of pump output pressures.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: April 23, 1996
    Assignee: Diversey Corporation
    Inventors: James W. Livingston, Stephen Hosking
  • Patent number: 5509786
    Abstract: A structure for mounting a thermal protector in a hermetic refrigeration compressor including an electric motor and a compressing means enclosed in a housing with refrigerant is disclosed. The housing has at least one through hole. The structure includes a terminal assembly airtightly secured in the hole of the housing. The terminal assembly includes a metal base and a plurality of electrically conductive terminal pins secured to the metal base by an electrically insulative material with small thermal conductivity. The structure further includes a thermal protector including a hermetic casing, a thermally responsive element disposed in the casing to be in direct contact with an inner wall of the casing at one side, and a contact mechanism.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: April 23, 1996
    Assignee: Ubukata Industries Co., Ltd.
    Inventors: Yasukazu Mizutani, Shigeo Kimura, Hideki Koseki
  • Patent number: 5509792
    Abstract: A reciprocal type of pump structure wherein a piston has a linear function actuated by a pair of coils energized alternately and includes a plurality of tapered flutes. A check valve in an outlet of the structure which stretches to open said outlet under the impact of expelled fluids and of its own volition retracts to the closed position immediately upon the cessation of fluids being expelled.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: April 23, 1996
    Assignee: Pumpworks, Inc.
    Inventors: Paul J. Sullivan, Vernon R. Scott, Robert Smith
  • Patent number: 5509790
    Abstract: A compressor/motor combination device for use in refrigerant recovery and/or recycling apparatus wherein the motor employed is of the disc armature type and the drive shaft thereof also acts as the crank shaft of the compressor for reciprocating the piston therein and extends in a direction opposite the compressor to drive a fan.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: April 23, 1996
    Assignee: Engineering & Sales Associates, Inc.
    Inventors: Carmelo J. Schuderi, James V. Masi, Stephen P. Scuderi
  • Patent number: 5507143
    Abstract: A cascade assembly (14) for use in a thrust reversing mechanism (16) of a jet engine (18) includes at least one group of substantially identically-shaped cascade elements (28) each in the shape of a predefined polygon. The cascade elements (28) are positioned in an array, wherein each cascade element (28) in the group may be interchanged in a location in the array with any other cascade element (28) in the group. In a first preferred embodiment, the predefined polygon is a regular polygon and each cascade element (28) is rotatable in its array position about an axis generally normal to the cascade element (28). The array substantially approximates sections of two intersecting spheres, wherein a central axis of the array is generally coincident with the longitudinal axis of the jet engine (18).
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: April 16, 1996
    Assignee: The Boeing Company
    Inventors: Clint A. Luttgeharm, Marty J. Todd, John M. Welch
  • Patent number: 5507630
    Abstract: A dual inline double acting plunger arrangement is particularly adapted for pumping thick slurries and includes a hollow cylinder divided into two closed chambers by a partition. A first plunger is disposed in a first chamber and a second plunger is disposed in a second chamber with the two plungers coupled together by appropriate linkage outside of the cylinder. A drive mechanism connected to the coupling linkage simultaneously displaces the two plungers in a reciprocating manner within the two chambers. Inlet and outlet ports in each of the chambers coupled to inlet and outlet valve assemblies allow for the pumping of a slurry from the chambers by the two plungers in an alternating manner. Each valve assembly includes a housing having a pair of ball valves which are both employed either as inlet valves or outlet valves, as the valve assembly may be configured to perform both functions.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: April 16, 1996
    Assignee: Chemgrout, Inc.
    Inventor: Donald C. Hegebarth
  • Patent number: 5507585
    Abstract: A mounting for a windshield wiper pivot shaft on a vehicle body panel supports the shaft for rotation about an axis of the panel. The mounting includes a transmission housing adapted to be rotatably seated on a first side of the panel. A key on the transmission housing and an associated keyway in the panel limits housing rotation in a first direction to a mounting position wherein an axis of the housing is aligned with the axis of the panel. The key has a retention surface which engages the panel to limit axial movement between the housing and the panel when the housing is in the mounting position, thereby passively retaining the housing to the panel. In one embodiment, a plurality of screws are installed from a second side of the panel opposite the first side and threadingly engage the housing. The screws are tightened in the first direction to rigidly fix the transmission housing to the panel, thereby maintaining the housing in the mounting position.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: April 16, 1996
    Assignee: ITT Automotive Electrical Systems Inc.
    Inventors: James N. Diederich, Ralph W. Edwards, Terry J. Powers
  • Patent number: 5507631
    Abstract: Disclosed is a cam pump with two sets of driving and driven pump cams, which receive polymer melt from an extruder and exit the polymer melt through two exit channels in a sequence of 1/2 volume unit, followed by a 0 volume unit, followed by 1 volume unit for one exit channel and simultaneously in a sequence of 1/2 volume unit followed by a 1 volume unit, followed by 0 volume unit for the second exit channel. The cam pump is used in a apparatus for melt mixing and spinning synthetic polymers for the manufacture of yarns with a multiplicity of bundles of filaments, whereby the properties of all filaments in all bundles alternate along their length and the properties of the filaments of each bundle of adjacent bundles alternate between the adjacent bundles.
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: April 16, 1996
    Assignee: BASF Corporation
    Inventor: John A. Hodan
  • Patent number: 5507627
    Abstract: An oscillating-plate type compressor has five cylinder bores 6 formed in a cylinder block 1. Coolant gas compressed in the cylinder bores is discharged to a discharge chamber 12 through discharge valves 17 secured to the cylinder block 1 by means of a bolt 19. The discharge chamber 12 is separated by a baffle plate 14 into two discharge spaces 12a and 12b, the former containing a bolt head 19a and the latter communicating with the discharge port. Five holes 14a to 14e which are the same in number as that of the cylinder bores 6 are formed and arranged along an imaginary circle of a predetermined diameter around the bolt facing portion 28 of the baffle plate 14 so as to communicate both of the discharge spaces 12a and 12b with each other.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: April 16, 1996
    Assignee: Zexel Corporation
    Inventor: Michio Okazaki
  • Patent number: 5507625
    Abstract: To decrease gas leakage across the cantilevered axial end of the hub of a liquid ring pump rotor which has a central recess in that end of the hub, the adjacent port structure is provided with a protrusion which extends axially part way into the recess in the rotor hub. A relatively small clearance is provided between the radially outer surface of the protrusion and the radially adjacent inner surface of the recess. This clearance is filled with liquid and thereby increases the area of the seal at the adjacent axial end of the rotor hub.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: April 16, 1996
    Assignee: The Nash Engineering Company
    Inventor: Carl G. Dudeck
  • Patent number: 5505591
    Abstract: An apparatus for processing materials, such as mixing or homogenizing fluids or dispersing a fluid in a viscous material, comprises a housing having bores and at least one inlet port and an outlet port disposed in the housing and in fluid communication with the bores. A pressure mechanism is disposed outside the housing and is in communication with the inlet port for introducing the materials under pressure to the bore and for forcing the materials through the bores to the outlet port. A rotor is disposed in each bore. The rotors do not contact each other. Each rotor has teeth, and the teeth of one rotor mesh with the teeth of an adjacent rotor so that the materials are squeezed in the space between two adjacent teeth of one rotor and the meshing tooth of the other rotor to impart stretching flow to the materials and to expel the materials from the interstices between the teeth of the one rotor and the other rotor.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: April 9, 1996
    Inventor: Daniel G. Tynan
  • Patent number: 5505593
    Abstract: A reciprocable device comprising a reciprocable member mounted for reciprocating movement within a chamber and a valve system for controlling the supply of fluid under pressure to the reciprocable member to bring about reciprocation of the member. The valve system comprises a spool valve, a coupling mechanism for joining the reciprocable member and the spool valve, and a bistable spring, which is actuated by the reciprocable member, for driving the spool valve through the coupling mechanism.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: April 9, 1996
    Assignee: Shurflo Pump Manufacturing Co.
    Inventors: E. Dale Hartley, F. Scott Hartley
  • Patent number: 5503536
    Abstract: A pump having a reciprocating piston/plunger unit adapted to be actuated by a railway wheel rolling over it has a unitary plunger and piston, with the piston double-acting so that when the outlet pressure exceeds a certain value, the plunger remains retracted. An accumulator is provided in fluid communication with the outlet so as to store accumulated hydraulic pressure.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: April 2, 1996
    Assignee: Applied Power Inc.
    Inventors: Carl G. Waldenstrom, Xudong Yu
  • Patent number: 5503221
    Abstract: The invention relates to a discharge system for combustion gases of a gas turbine or the like, whereby one end of the discharge pipe is connected to the gas turbine or the like, whilst the other end of the discharge pipe is connected to a heat exchanger. A branch pipe, which extends transversely to the discharge pipe, is connected to said discharge pipe. A valve mechanism is disposed near the connection of the branch pipe to the discharge pipe, which valve mechanism is pivotable between a first position, in which the end of the branch pipe connecting to the discharge pipe is closed, and a second position, in which the discharge pipe is closed downstream of the connection of the branch pipe to the discharge pipe. At least one curved guide vane is provided, which, in the second position of the valve, is located upstream of the valve mechanism, at least partially within the discharge pipe, and which extends downstream from its upstream edge, in the direction of the branch pipe.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: April 2, 1996
    Inventor: Philip R. Koudijs
  • Patent number: 5503533
    Abstract: A multiple pump, multiple tank fluid control system incorporates a programmable processor which communicates with an operator input/output control panel which can be switched between each member of the plurality of tanks. Pump on and off levels for a selected tank can be readily set electronically using control switches on the control panel. On and off levels for different pumps can be nested readily by the operator to provide multiple pump capacity as deemed desirable by the operator.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: April 2, 1996
    Assignee: Metropolitan Pump Company
    Inventors: Richard Potter, Jeffrey A. Reichard