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8162462 Check valve unit for solid ink reservoir system  
A check valve unit is provided for a high-speed phase change ink image producing machine between a reservoir for receiving and holding a volume of melted ink from a source and a receiving unit,...
7422030 Air admittance valve assembly  
A one directional flow valve assembly for a fluid system. The valve assembly is comprised of a valve body having an internal valve chamber in communication with the ambient environment and a valve...
7108494 Apparatus for preventing the backflow of gas of scroll compressor  
An apparatus for preventing backflow of a gas of a scroll compressor includes: a hermetic container provided with a discharge pipe through which a gas is discharged; a fixed scroll fixedly coupled...
7104470 Device for producing high pressure in a fluid in miniature  
A miniaturized device for pressurizing fluid. The device includes a hollow piston that provides a fluid path and a valve member. The valve member is configured for axial movement so that the valve...
6823893 Non-return valve  
A non-return valve has a valve housing with a flow channel having a vertical channel section, an inlet aperture, an outlet aperture and a blocking device closing the flow channel. The blocking...
6712591 Discharge valve of a hermetic compressor using stopper and weight driven disc valve  
A discharge valve of a hermetic compressor includes a valve plate disposed on a cylinder head that draws in and discharges refrigerant according to reciprocal movement of a piston, and the...
6668856 Valve with guided ball  
A guided ball check valve in which the ball is guided to prevent radial wander. The guided ball valve comprises a valve housing having a cylindrical bore. A conical valve seat is provided at a...
6517011 Fuel injector with pressurized fuel reverse flow check valve  
A fuel injector pressurizes fuel in a pressurization chamber and ejects the fuel from an orifice. A reverse flow check valve allows fluid communication between the pressurization chamber and the...
6360766 Check valve with an integral breakaway retainer  
A check valve plunger assembly for use in a fluid channel is provided. The check valve plunger assembly includes a check valve plunger having a first end, a second end, and a body portion. The body...
6227830 Check valve mounted adjacent scroll compressor outlet  
Several discharge check valve arrangements for scroll compressors move the check valve closer to the discharge port and the compression chambers. This reduces the amount of discharge pressure...
6065948 Discharge check valve in a scroll compressor  
A scroll compressor has a discharge check valve assembly comprised of a valve and a valve cage. The valve is maintained open within the assembly by the flow of discharge gas from the scroll set...
5992442 Relief valve for use with hermetically sealed flexible container  
A pressure relief valve for use with flexible containers holding coffee, especially ground coffee, is disclosed. The valve incorporates a unique two piece structural arrangement that requires a low...
5897305 Valve assembly for compressors  
A valve assembly positionable between open and closed positions in response to pressure differentials only comprising a valve chamber having an inlet and an outlet defined by a circumferentially...
5894741 Universal housing body for an expansion device having a movable orifice piston for metering refrigerant flow  
A universal housing body for a refrigeration expansion device including a movable orifice piston. The body is adapted for interchangeable use with a piston of a first variety having a radial boss...
5836170 Vacuum release valve tube assembly  
A vacuum release valve for use in a refrigerated compartment such as a domestic refrigerator which allows a small amount of outside air to enter the refrigerated compartment to prevent a vacuum...
5797427 Fuel injector check valve  
A diesel engine unit injector is combined with a check valve having fuel delivery passages (notches or slots) with radially-inner edges that are concave in shape whereby areas of relatively...
5788289 One-piece coupler for connecting hoses  
A hose-coupler made up of a just one component having a main housing section with a female end and a male end. The second female end of the coupler is formed with interior threads, for receiving...
5709242 Device for blocking a liquid flow through a pipe in one direction  
A device for blocking a liquid flow through a pipe in one direction, said device being provided with a substantially spherical valve body, which can closingly cooperate with a substantially annular...
5683236 Anti-reverse rotation valve for scroll compressor  
A scroll-type refrigeration compressor has a gas-liquid mixture discharge passage extending through the driver scroll drive shaft for discharging refrigerant gas and entrained lubricant into a high...
5520522 Valve arrangement for a micro pump  
A micro pump which employs magnetostrictive or electrostrictive elements as solid drive elements and is capable of self-priming even though its flow rate is increased. In the pump, disk-shaped...
5365906 Fluid flow check valve for fuel system  
A fluid flow check valve assembly having a tubular valve housing with opposite inlet and outlet end portions and a movable valve member therebetween. The valve member has an end sealing portion...
5199860 Hydraulic reciprocating piston pump for brake installations of motor vehicles with an ABS system  
An improve the pump including a reciprocal piston pump having a pump piston, guided longitudinally displaceable in a displacement chamber. An outlet valve for the admission of pressure means and a...
5161574 Maximum operation angle single plug and puppet type retention valves  
A check valve assembly is disclosed wherein a valve closure means includes a guide means and a connector means as a composite member for use in a pipline or conduit inclined to the vertical. The...
5141420 Scroll compressor discharge valve  
A scroll type hermetic compressor is disclosed which incorporates an improved disc type check valve in the discharge conduit exiting from the compressor shell. The check valve operates to prevent...
5100299 Process for pumping a two phase mixture  
A single plug check valve for use in a process for pumping a two phase mixture is designed in such a manner as to minimize pressure drop across the valve thereby maximizing the flow of fluid...
5097864 Adjustable flow poppet valve for injection molding  
A check valve for use in controlling the flow of thermoplastic material in an injection molding apparatus includes a valve body having an axially extending chamber formed therein with an inlet...
5062451 Maximum flow single plug retention valve  
A single plug check valve for use in a process for pumping a two phase mixture is designed in such a manner as to minimize pressure drop across the valve thereby maximizing the flow of fluid...
4901757 One way valve  
A one way valve includes a valve housing. A valve compartment is located with the valve housing. An inlet and an outlet port are mounted in the valve housing to provide communication with the valve...
4896696 Flow control restrictor  
A restrictor for use in conduit systems, such as refrigeration and heat pump circuits for controlling the flow of fluid therein. The restrictor incorporates a unique shape to lower the operational...
4856823 Coupling with improved locking/unlocking member  
A female assembly of a quick connect/disconnect coupling including an annular locking/unlocking member molded in a thin wall construction of plastic material such that the annular member is capable...
4768932 Hydraulic paint pump  
There is provided an improved airless paint spray pump having an intake, an inlet valve assembly, a pumping chamber, an outlet, an outlet valve assembly, and stroke pumping means for pumping the...
4696296 Aspirating/ventilating apparatus  
A ventilating and aspirating assembly comprising an aspirating catheter tube internally disposed within and coextensive with a surrounding flexible collapsible sterility preserving film envelope, a...
4674529 Check valve  
This invention is concerned with a check valve made up of two housings or castings, each of which has a corrosion resistant liner which provides improved support and operation of the ball or check...
4660803 Quick coupling connector for connecting flexible liquid conduits  
The present invention is a quick coupling connector for use in connecting and disconnecting hoses adapted for conducting liquids. The connector includes a unitary molded plastic male connector body...
4655248 Check valve  
A check valve (22) is provided with a tapered plug (32), freely longitudinally movable with respect to a valve seat surface (34) disposed about the opening of the inlet passage (24). A plurality of...
4643222 Check valve  
An improved piston in a check valve which prevents unintentional leakage past the check valve even at low pressures. The piston includes a generally-conically shaped tip and a Teflon ring received...
4502662 Shrouded fluid coupling  
A shrouded type fluid coupling is provided with a valve in the shroud for permitting fluid flow through the shroud in one direction and for preventing fluid flow through the shroud in the opposite...
4432324 Air-fuel ratio control device of an internal combustion engine  
An internal combustion engine comprising a carburetor which has a main air bleed passage and a slow air bleed passage. An air-fuel ratio of the mixture fed into the cylinder of an engine is so...
4422469 Submersible pump check valve  
A valve element for reciprocation within a port has a body member which cooperates with a valve seat defined on a wall around the port. A plurality of resilient legs extend from the body member...
4414997 Siphon  
A siphon for transferring fluid from a container to either another container at lower elevation or to a disposal area. The siphon includes a tube having an improved one way check valve which valve...
4382901 Mass transfer equipment  
Mass transfer equipment comprises a base (3) having at least one riser (1) with inwardly elongated sloping sides and a moveable valve cap (2) positioned above the riser (1), having outwardly and...
4356996 High pressure globe and check valve  
A high pressure globe and check valve mechanism according to the present invention incorporates a valve body structure having a globe valve type seat removably positioned therein. A globe type...
4310017 Backflow check valve for use with IV administration sets  
A backflow check valve includes male and female hubs sonically welded together with a flow control disc located within the check valve. The disc permits flow in one direction through the check...
4254617 Combustion unit  
This invention relates to combustion units in which combustible fluids are fed to a combustion chamber and burnt, and in which the resulting combustion gases are used to drive a power output. The...
4249566 Fluid pressure-operated valves  
An emergency two-way shut-off valve comprises a housing and two valve members having openings therethrough which when the valve members are spaced apart, permit flow of fluid through the valve but,...
4185655 Submersible pump check valve  
A submersible pump check valve having a housing connected to the discharge port of a submerged pump has a poppet retained by four legs operable as cantilever springs and which interact with cam...
4105147 Extruder screw valve  
The invention disclosed herein is an injection molding machine unit having a barrel, with an injection nozzle on one end of the barrel and a screw ram movable in the barrel, a valve member with...
3999571 Pressure relief valves  
A pressure relief valve, e.g. for oil tankers comprising a valve housing, in the interior of which there is provided a valve seat for an upwardly opening valve body which carries a drop-shaped...
3991914 Easily assembled, leakproof liquid dispensing pump  
An easily assembled, low cost, disposable pump is disclosed for use with household liquid product containers. The pump is designed to prevent leakage of the product regardless of container attitude...
3978886 Backflow safety valve for therapy pools  
A valve which is particularly adapted for use as a backflow safety valve for therapy pools, in which it prevents water from flowing through the air supply line and damaging the air blower. When the...
Matches 1 - 50 out of 92 1 2 >