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8162623 |
High-pressure liquid supply pump
An object of the present invention is to reduce the pressure loss in a relief valve employed for a high-pressure liquid supply pump. Disclosed is a high-pressure liquid supply pump for pressurizing...
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8105056 |
Aerating bag
An aerating bag has a body, a connector, a check valve and an intake valve. The body has a connecting tube, a mounting tube and a chamber. The chamber communicates with the connecting tube and the...
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8092198 |
Fuel pump for internal combustion engine
A fuel pump includes a pump housing having a compression chamber. A plunger is axially movable in the pump housing for pressurizing fuel in the compression chamber. A discharge valve is configured...
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7997881 |
Combined prime valve and electrical pressure control for paint spray pumps
A combined prime valve and electrical pressure control apparatus including a prime valve actuator, an electrical pressure control actuator, and a control housing containing the actuators, with each...
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7993111 |
Power steering pump flow control
An apparatus for preventing noise from occurring due to cavitation in a power steering pump during low temperature start-up includes the addition of a multi-passage orifice element for adding...
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7931452 |
Suction throttle valve of a compressor
A compressor has a suction throttle valve, which includes a suction passage, a suction port, a valve body, an urging member, a valve chamber, a first communication hole, a closing valve and a valve...
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7918656 |
Suction throttle valve of a compressor
A suction throttle valve of a compressor has a compressor housing having a suction chamber and a crank chamber. The suction throttle valve includes a suction passage formed in the housing, a...
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7758317 |
Method of analyzing vaporization pattern of solvent and solvent vacuum vaporization device
A method for analysis of solvent evaporation patterns includes: continuously evacuating the gas of a single-component or multicomponent solvent evaporated under desired evaporation conditions from...
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7651321 |
Variable displacement compressor
Refrigerant gas is introduced into a suction chamber through a suction line. Refrigerant gas is allowed to flow from the crank chamber into the suction chamber through an outlet line. An open...
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7648346 |
Variable displacement compressor
A variable displacement compressor in which variable control of displacement is effected through adjustment of a crank chamber pressure, includes: a suction port; a suction chamber; a suction...
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7648343 |
Air compressor unit inlet control method
A method allows for controlling the amount of electric current from an electrical circuit used by an electric motor in an electric motor driven reciprocating air compressor unit. A piston is...
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7628590 |
Method and apparatus for reducing free flow risk
A technique for reducing the risk of free flow through a pump is disclosed. The technique includes sensing a pressure difference between the pump inlet and outlet. The pressure difference is...
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7399169 |
Compressor
The invention provides a compressor that can reduce occurrence of vibration and noise due to self-induced vibration of an suction valve at the time of a low flow rate surely with an inexpensive...
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7318709 |
Pump valve assembly
A valve assembly is disclosed generally comprising first and second valve plates mounted between the housing for a pump mechanism and a cover, the first plate having flexing flaps corresponding to...
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7144230 |
Pulse fuel pump for a diaphragm carburetor
A device that corrects with ease and high precision any deviation of the fuel flow rate due to variation in the constituent components of a carburetor, and to improve the exhaust condition and...
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7118350 |
Radial piston pump
The invention relates to a radial piston pump unit for a high pressure injection system with a pump housing in which a driveshaft with an eccentric section is mounted. A reciprocating ring sits on...
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7086841 |
Air compressor with inlet control mechanism and automatic inlet control mechanism
An automatic inlet control mechanism and air compressor unit include a valve cavity and valve outlet. The valve cavity includes a valve control chamber and valve inlet chamber. A valve piston...
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7059838 |
Control device for positive displacement pumps
A control device for a positive displacement pump includes a throttle device and a flow control valve. The flow control valve includes a flow control piston and is configured to regulate an...
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7052243 |
Pressure regulating valve
A pressure maintenance assembly for a domestic water well system. The assembly comprises a pressure maintenance valve having an inlet side and an outlet side, a pressure tank in fluidic...
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7011507 |
Positive displacement pump with a combined inertance value of the inlet flow path smaller than that of the outlet flow path
A pump according to the present invention has a circular diaphragm 4 placed at the bottom of a casing 2. At the bottom of the diaphragm 4, a piezoelectric element 6 is installed in contact with the...
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6942472 |
Head pressure relief assembly
A head pressure relief assembly for relieving pressure in the head assembly of an air compressor may include an exhaust valve post formed in the head assembly and an exhaust valve assembly...
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6874997 |
Pump system using a control fluid to drive a switching valve mechanism for an actuating fluid
There is provided a pump system excellent in a maintenance ability and compatibility. The pump system comprises a pump (1) for transferring a liquid by alternately supplying air to air chambers...
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6866490 |
Water-injected screw compressor
The invention relates to a water-injected screw compressor which comprises a compressor element (1) with an interior space (3), a suction conduit (7) which connects to an inlet part (6), situated...
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6846164 |
Multi-cylinder compressor having plural intake ports in a bearing plate and a cover member forming a sealed space over the bearing plate
The purpose of the present invention is to provide a multi-cylinder compressor permitting to increase a gas inflow into the housing without enlarging the intake ports of the bearing plate. The...
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6814553 |
Dual reciprocating bellows pump, with a pair of interlocking shafts passing through a common pump head and dual pump chambers
The present invention is to provide a dual reciprocating bellows pump which can facilitate size reduction design of the whole pump, permit pump manufacture at low cost, and permit reducing the dead...
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6796778 |
Fuel injection pump having throttled fuel path for fuel lubrication
In a fuel path through which fuel is supplied to a pump-cam chamber accommodating a drive shaft and a cam for lubrication, an annular throttle fuel path is formed between an inside wall of a...
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6769449 |
Water booster methods and apparatus
Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a...
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6755625 |
Inlet throttle valve
An inlet throttle valve for supplying liquid to a high-pressure pump has a fully open start position and an operating range where flow through the valve is determined by a pressure balance of a...
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6725844 |
High-pressure pump with an on-off valve for feeding fuel to an internal combustion engine
The pump has a body including at least a fuel compression chamber and an actuating chamber enclosing the actuating members of the pump. The on-off valve has a shutter sliding inside a hole in the...
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6676388 |
Gas compression apparatus for reciprocating compressor
A gas compression apparatus for a reciprocating compressor includes a reciprocating motor generating a linear reciprocal driving force, a compressing cylinder positioned within a predetermined...
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6668863 |
Throttle element with gap filter
A throttle element with a gap filter for use in a fuel pump is proposed, which is press-fitted into a conduit in the housing of an injection pump. By means of the press fitting, a good sealing...
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6558130 |
Two-way manually operated pump structure
A two-way manually operated pump structure consisting of a pump body, a nozzle mount, a control ring mount, and other structural components that are assembled together, in which rotating the...
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6553971 |
High-pressure pump with an on-off valve for feeding fuel to an internal combustion engine
The pump has a body including at least a fuel compression chamber and an actuating chamber enclosing the actuating members of the pump. The on-off valve has a shutter sliding inside a hole in the...
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6533556 |
Pressure balanced hydraulic pumps
A hydraulic pump has a pair of inlets each with a pair of outlets. The inlets and outlets are arranged to balance the forces on the motor. The flow from the outlets of each pair may be combined to...
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6520756 |
Piston pump
The invention relates to a piston pump for a vehicle brake system, in particular a slip-controlled hydraulic vehicle brake system. For damping pressure pulsations, the invention proposes proving a...
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6481986 |
Vacuum adjustment mechanism particularly adapted for a breastpump
An improved vacuum adjustment mechanism for controlling airflow into a chamber which is subject to negative pressure, such as the chamber of a diaphragm pump which is generating vacuum for a breast...
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6450146 |
High pressure pump with a close-mounted valve for a hydraulic fuel system
This invention provides a pump with a close-mounted valve for a hydraulic fuel system in an internal combustion engine. The hydraulic fuel system may have a high pressure pump connected to a low...
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6443887 |
Switch based spontaneous inflation inhibitor in a pump for an inflation prosthesis
A pump assembly for a penile implant is provided having a mechanism that prevents spontaneous inflation of the cylinders implanted within the patient. The preventative mechanism includes a...
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6406278 |
High-pressure pump with a removable on-off valve for feeding fuel to an internal combustion engine
The pump has a body including at least a fuel compression chamber and an actuating chamber enclosing the actuating members of the pump; the on-off valve is defined by an independent operating...
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6379131 |
Scroll type compressor
A scroll type compressor includes a fixed scroll member and an orbital scroll member disposed within a housing for defining a compression pocket compressing refrigerant gas, an open portion...
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6367961 |
Apparatus for making an emulsion
An apparatus for making a sterile emulsion, comprising a fluid pathway, a pumping bore, a reciprocable (reciprocal) member, and a valve body. The pumping bore being in fluid communication with the...
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6361285 |
Valve plate with hydraulic passageways for axial piston pumps
An axial piston pump of the swash-plate variety having a rotating cylinder block and pistons movable in a longitudinal direction within bores formed in the block, and having a reversing capacitance...
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6296456 |
Positive displacement pump systems with a variable control orifice
A positive displacement pump system has first and second delivery passages for pumped fluid and a main delivery passage receiving flow from the first delivery passage and, via a non return valve,...
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6261068 |
Gas compressor
A gas compressor includes a compression chamber, an outlet valve, and a shuttle valve which disables the outlet valve when it is connected to an atmospheric pressure relief chamber in idle...
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6257848 |
Compressor having a control valve in a suction passage thereof
In a compressor for compressing a gaseous fluid, a control valve (22) is arranged for controlling an open area of a suction passage (17,18) which is for introducing the gaseous fluid. In a first...
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6241016 |
Drive head assembly
The present invention provides a pump drive assembly for a deep well, submersible, progressing cavity pump that includes an internal hydraulic pump for slowing the counter rotation of the polished...
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6213729 |
Suction-throttled pump
A suction-throttled pump, comprising at least one displacement body for the delivery of a medium and movable in a delivery chamber, into which opens at least one inflow channel extending between...
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6162029 |
Filtering throttle element for fuel injection pump
A throttle element installed in a blind bore of a connecting conduit which delivers fluid to cool an electromagnet. The throttle element includes a filter region upstream of a throttle which...
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6129521 |
Safety valve apparatus for air pressure operable diaphragm pump
A safety valve apparatus (25) for feeding predetermined liquid (21) from a tank (22) to a diaphragm pump (1) in which a central rod (3) is reciprocally slidable by air pressure to forcibly pump out...
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6071094 |
Photoresist dispense pump
A photoresist dispense pump receives photoresist from two pipelines, a first pipeline and a second pipeline, and pumps out the photoresist through a third pipeline. The photoresist dispense pump...
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