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| Number | Title | Issue Date |
| 7806665 | Auxiliary braking device for wellhead having progressive cavity pump An auxiliary braking device can be used for wellhead applications having a progressive cavity pump. A housing of the device independently mounts on the pump's existing drive using a mounting member, and an adapter on the housing connects to a rotatable drive shaft o... | 10/05/2010 |
| 7553132 | Micro device incorporating programmable element A micro device is provided that includes a body defining a chamber for receiving fluid. A rotational element is disposed in the chamber for acting on the fluid. The rotational element is rotatable about an axis in response to a rotating magnetic field. The micro dev... | 06/30/2009 |
| RE40400 | Capacity modulated scroll machine A scroll-type machine is disclosed which is particularly well suited for use as a compressor in refrigeration and air conditioning systems and incorporates a unique arrangement for modulating the capacity thereof. In one group of embodiments the capacity of the scro... | 06/24/2008 |
| 7341440 | Scroll compressor A scroll compressor includes an orbiting scroll having a compressor chamber in an upper portion thereof and a bypass passage formed through upper and lower ends of a body thereof, a fixed scroll that allows the orbiting scroll to orbit therein to compress a coolant,... | 03/11/2008 |
| 7340339 | Power management system An exemplary power management system may include a power source configured to receive a fuel supply and a transmission driveably engaged with the power source. A control system communicates with the power source and the transmission and is configured to determine a ... | 03/04/2008 |
| 7318416 | Liquid fuel pump A liquid fuel system for an internal combustion engine includes a fuel supply line, a fuel pump connected to the supply line and having an outlet to a carburetor or a liquid fuel injector. A mechanical contact between the pump and a component of the internal combust... | 01/15/2008 |
| 7284961 | Pumping system, replacement kit including piston and/or cylinder, and method for pumping system maintenance A pumping system including a pump is disclosed. The pump includes a replacement piston and a replacement cylinder associated with the replacement piston. The replacement piston has a cross sectional area smaller than a cross sectional area of an original piston of t... | 10/23/2007 |
| 7255544 | Housing including shock valves for use in a gerotor motor A housing for a motor having fluid passages integrated within. The passages include a first passage for receiving a fluid from outside the motor, a second passage for directing the fluid away from the motor, and at least one other passage from conveying the fluid to... | 08/14/2007 |
| 7200994 | Free piston stirling engine control A control system for a Stirling engine including the use of a synchronous power converter (“SPC”) which is connected to the terminals of the alternator in a linear alternator/FPSE power system. According to the teachings of the present invention, the attached SP... | 04/10/2007 |
| 7178745 | Dispense tip with vented outlets In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a directio... | 02/20/2007 |
| 7128541 | Oscillating displacement pump An oscillating displacement pump, particularly a diaphragm pump (P) for liquid or gaseous delivery media, having a delivery space which on the one side is delimited by a pump head and on the other side by a delivery element, particularly formed by a diaphragm (6 | 10/31/2006 |
| 7090470 | Apparatus and method for preventing a piston and valve collision in a linear compressor An apparatus and method for controlling a linear compressor is provided. The linear compressor controlling apparatus includes a voltage detection unit, a current detection unit, a control unit and a compressor drive unit. The voltage detection unit detects a voltage... | 08/15/2006 |
| 7048521 | High pressure fuel supply pump with an intake valve member and a discharge valve member aligned along a plunger axis In a high pressure fuel supply pump, a housing is provided with a through-hole having a step. A plunger is slidably accommodated in the through-hole on an axial end side thereof. An intake valve member is positioned in the through-hole on an axially opposite side to... | 05/23/2006 |
| 7025044 | Pump assembly and method A pump assembly includes a high-pressure pump that flows pressurized working fluid in a fuel injection system of a diesel engine. The assembly includes a pilot-operated inlet throttle valve that receives a flow of low-pressure fluid from a feed pump and controls the... | 04/11/2006 |
| 7025571 | Apparatus and method for controlling a reciprocating compressor Disclosed is an apparatus and method for controlling a reciprocating compressor capable of inexpensively and exactly controlling a position of a piston in a cylinder, by which a top clearance is minimized according to the information of a phase difference between a ... | 04/11/2006 |
| 7000853 | System and method for control of fluid dispense pump In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a directio... | 02/21/2006 |
| 7001154 | Apparatus for controlling a linear compressor and preventing the collision of a piston with a valve in the compressor Disclosed herein is an apparatus and method for controlling a linear compressor. The linear compressor control apparatus has a collision detection unit, a control unit, and a compressor driving unit. The collision detection unit detects a collision of a piston with ... | 02/21/2006 |
| 6968815 | Actuating device for securing a camshaft of an engine of a motor vehicle in a start position An actuating device for hydraulically securing a camshaft of an engine of a motor vehicle in a start position has a solenoid valve controlling the flow of a pressure medium to a camshaft adjuster with a rotary slide valve that is fixedly connected to the camshaft an... | 11/29/2005 |
| 6955531 | Pump for inflating and deflating an inflatable object with a rotatable nozzle assembly A pump is capable of inflating and deflating an inflatable object. The pump includes a cylinder, a piston and a nozzle. The cylinder defines an outlet through which air can only flow into the cylinder and an inlet through which air can only flow from the cylinder. T... | 10/18/2005 |
| 6954040 | Method of controlling a reciprocating linear motor A free piston gas compressor comprising a cylinder, a piston reciprocable within the cylinder and a reciprocating linear electric motor derivably coupled to the piston having at least one excitation winding. A measure of the reciprocation time of the piston is obtai... | 10/11/2005 |
| 6910462 | Directly controlled fuel injector with pilot plus main injection sequence capability In one class of fuel injection systems, the individual fuel injectors cycle between high and low pressure during and between injection sequences in a given engine cycle. The fuel injectors may be hydraulically actuated, mechanically actuated, and possibly include co... | 06/28/2005 |
| 6679684 | Pump device having a device for restricting movement of a movable member movable to pressurize working fluid A pump device comprising a support member having a fitting recess, a movable member which is reciprocated in said fitting recess to suck a working fluid, pressurize the fluid and deliver the pressurized fluid, and a movement restricting device operable to... | 01/20/2004 |
| 6533562 | Two-stage oil injection into scroll compressors An improved scroll compressor has condition responsive lubricant volume flow. The lubricant is preferably delivered to a tap positioned adjacent the suction chamber such that lubricant is delivered into the scroll compressor in a quantity which is desirab... | 03/18/2003 |
| 6524078 | Pond pump with reversing means to prevent rotation in the opposite direction A pond pump having a housing (1) enclosing a synchronous motor (9) with a drive shaft (40) on which an impeller (20) is loosely fitted so that, on start up, the shaft (40) can rotate relative to the impeller (20) until a pair of diametrically opposed keyw... | 02/25/2003 |
| 6347571 | Radial piston motor with friction brake A drive device which has small dimensions an axial and radial directions. The small dimensions of the device are a result of a brake body of a friction brake provided in the drive device being located at least partially within an enclosure configured in a... | 02/19/2002 |
| 6341945 | Scroll compressor with reduced capacity at high operating temperatures A number of embodiments are disclosed in which scroll compressor elements are actuated upon a particular condition being sensed within the scroll compressor. Upon the condition being sensed, elements are actuated which restrict the orbit radius of the orb... | 01/29/2002 |
| 6200106 | Fan assembly with a fan locking device for an automotive fluid friction fan clutch The present invention relates to a fan for an internal combustion engine. The fan has a locking device for a fluid friction clutch in the form of a pivoting hook that may be mounted subsequently at a fixed location using a holding device and may be trigge... | 03/13/2001 |
| 6113355 | Pump drive head pump assembly with a hydraulic pump circuit for preventing back-spin when the drive head has been shut off A pump drive head includes a housing, and a main shaft carried on upper and lower bearings disposed in the housing. The main shaft includes an outer torque tube and a liner tube. The outer and liner tubes abut along a first portion of their length and are... | 09/05/2000 |
| 6074172 | Controller for compressor A controller is provided to control and fix the stroke and frequency of the piston movement of the compressor under various operating conditions. The controller includes a signal generator for providing a first signal, a detector generating a second signa... | 06/13/2000 |
| 6016691 | Calibrated toggle lever of leak detection module pump A module for an on-board evaporative emission leak detection system that detects leakage from an evaporative emission space of an automotive vehicle fuel system, and corresponding method that calibrates a leak detection module pump to set a desired stroke... | 01/25/2000 |
| 5879136 | Electrohydraulic adjustable pump An electro hydraulically adjustable pump has an adjustment member which is adjustable by at least one adjustment piston, a control valve which acts upon the at least one adjusting piston, a servo amplifier which triggers the control valve and which is sup... | 03/09/1999 |
| 5741120 | Capacity modulated scroll machine A scroll-type machine is disclosed which is particularly well suited for use as a compressor in refrigeration and air conditioning systems and incorporates a unique arrangement for modulating the capacity thereof. In one group of embodiments the capacity ... | 04/21/1998 |
| 5567122 | Cylinder pump having controllable piston/drive detachment A cylinder pump having a controllable piston/drive detachment is disclosed that can engage or disengage a piston rod using a solenoid. Most any type of drive can be used. The cylinder pump could have one or more cylinders. Each cylinder and piston rod has... | 10/22/1996 |
| 5507266 | Fuel pressure control using hysteresis pump drive Fuel pressure in a deadheaded fuel rail is regulated by an eddy current clutch that forms part of the mechanism that mechanically couples the engine crankshaft with a fuel pump which delivers pressurized fuel to the rail. An electric control that receives... | 04/16/1996 |
| 5503536 | Rolling wheel actuated pump and pump system 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 retra... | 04/02/1996 |
| 5378112 | Positive displacement, variable delivery pumping apparatus A primary vane pump has a rotor with vanes, and an intermediate casing, which is also rotatable, both mounted in a fixed housing. The rotor vanes are enclosed in the casing and provide a primary pumping stage. The rotatable intermediate casing has outer v... | 01/03/1995 |
| 5358036 | Safety disc brake assembly A relatively simple hydraulically operated disc brake mechanism for drive systems which store reactive torque by reason of being under torsion is disclosed. Certain drive systems such as the drive strings for deep well submersible pumps store considerable... | 10/25/1994 |
| 5320498 | Structure for plunger pump A support structure for a plunger employed in a plunger pump, comprises a pump housing, a cylinder firmly fitted into a cylindrical hollow defined in said housing, a plunger slidably enclosed in the cylinder to provide a pumping action, a stopper arranged... | 06/14/1994 |
| 5284424 | Osmotic water purification pumping system with flush valve The invention relates to a pump arrangement, especially for the operation of an osmotic water purifier comprising a filter housing (10) having a raw water inlet (11), a filtrate outlet (15), a reject outlet (16), and a flush valve (18) adapted to be opene... | 02/08/1994 |
| 5219274 | Pump with internal pressure relief A fluid pump having a rotary power source, a rotary to reciprocating motion converter in the form of a cam and cam follower, a rotary speed reducing gear train coupling the rotary power source to the rotary to reciprocating motion converter, and no pressu... | 06/15/1993 |
