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| Number | Title | Issue Date |
| 8272398 | Liquid discriminating vent valve A valve assembly for a fuel tank includes a housing. A membrane supported by the housing such that the membrane covers a vapor passage defined by the housing. The membrane allows the passage of vapor through the membrane and prevents the passage of liquid through th... | 09/25/2012 |
| 7314187 | Atomizer for applying liquids onto eyes Atomizers for administering liquids to the cornea or conjunctiva of the eye, special eye adapters for atomizers and the use of atomizers for ophthalmological administration. The atomizers are free from propellant gas and have an energy reservoir for supplying the en... | 01/01/2008 |
| 7278838 | Inlet check valve with removable seat An inlet check valve is mountable to a valve body that, in turn, is mounted to a high pressure pump. The inlet check valve has a removable inlet seat with a first through-hole forming an inlet path and functioning as a valve seat. A valve is positionable over the fi... | 10/09/2007 |
| 7121291 | Check valve, auxiliary circulating device and method for driving the auxiliary circulating device A check valve includes a casing member, a tear-drop shaped ball member installed in the casing member, a latching member which is formed at an inner wall of the casing member and an airtight valve which is formed at an inner wall of the casing member. When forward f... | 10/17/2006 |
| 7004931 | Proximal catheter assembly having a self-limiting aspiration valve The present invention is directed to a proximal catheter assembly configured to facilitate natural or suction-assisted aspiration through a catheter lumen. The proximal catheter assembly comprises a multi-function valve configured to perform functions associated wit... | 02/28/2006 |
| 6964798 | Multi-layered polymer based thin film structure for medical grade products A multiple layer structure comprising a first and a second skin layer, each skin layer composed of a polypropylene containing polymer, and a radio frequency (“RF”) susceptible layer adhered to and between the first and second skin layers. The RF layer has a firs... | 11/15/2005 |
| 6923202 | Modular pressure relief valve A pressure relief valve having a modular design that allows the release pressure of the valve to be altered during assembly is provided by the present invention. The valve includes a serrated valve tube that fits inside of a valve body. A spring retainer ring fits o... | 08/02/2005 |
| 6817373 | One-directional microball valve for a microfluidic device A microfluidic device that includes a micro ball valve is provided. The microball valve is capable of preventing or interrupting fluid flow through the microfluidic device. The microfluidic device can include a substrate layer, and a microfluidic pathway that includ... | 11/16/2004 |
| 6619316 | Check valve having adjustable lift, packing assembly, and retrofit kit for same A packing assembly, retrofit kit, and check valve with adjustable lift having a ball stop member having opposed first and second contact portions and at least two washers being provided in a stacking configuration. The stacking configuration is one select... | 09/16/2003 |
| 6598616 | Tapping point and supply water network comprising such tapping point A water tapping point with a hot water inlet; a cold water inlet, a hot water space, a cold water space, a mixing chamber, a hot water outlet from the hot water space and a cold water outlet from the cold water space. A characteristic feature of the inven... | 07/29/2003 |
| 6497373 | 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 axis remains parallel to the piston axis. The valve member... | 12/24/2002 |
| 6402055 | 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 axis remains parallel to the piston axis. The valve member... | 06/11/2002 |
| 6346219 | FCC feed injector with closure plug A fluid feed distributor improves particle and feed contacting by using a flow actuated plug to prevent back flow of fluidizable particles through a fluid feed outlet when fluid feed to a riser conduit ceases. The plug is located at or near the bottom of ... | 02/12/2002 |
| 6305420 | Head gasket with a check valve A head gasket which acts, when clamped between a head and a cylinder block of an internal combustion engine, to form a seal around at least one lubricant or hydraulic fluid passage which extends between the head and the block. The gasket also comprises a ... | 10/23/2001 |
| 6149139 | Membrane carburetor for a portable handheld work apparatus The invention relates to a membrane carburetor for an internal combustion engine in a portable handheld work apparatus such as a motor-driven chain saw. A throttle flap is arranged in the intake channel for the combustion air. The throttle flap is pivotal... | 11/21/2000 |
| 6119735 | Filling of tanks with volatile liquids A method of and apparatus for filling a volatile liquid into at least one tank (10) of a multi-tank installation having a vent-pipe (11A, 11B . . . 11F) associated with each tank, all of the vent-pipes being connected to a common vent manifold (13) throug... | 09/19/2000 |
| 6095185 | Fluid-flow control device particularly useful as a drip-irrigation emitter A fluid-flow control device particularly useful as a drip-irrigation emitter, includes a housing having first and second housing sections attachable to each other to define an internal chamber. The first housing section includes an inlet opening at one si... | 08/01/2000 |
| 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 during the normal course of compressor operation and is essen... | 05/23/2000 |
| 6021810 | Inlet check valve A check valve assembly mounted on an end surface of a projection of a valve body. The check valve assembly includes a valve having a curved sealing surface disposed adjacent a fluid inlet intersecting the end surface of the projection. The check valve ass... | 02/08/2000 |
| 5904179 | Inlet check valve A check valve assembly mounted on an end surface of a projection of a valve body. The check valve assembly includes a valve having a sealing surface on one side and a stem on an opposite side, and the valve body includes a fluid inlet intersecting the end... | 05/18/1999 |
| 5819785 | Instantaneous hot water control device A convective flow control device that can maintain hot water at hot water pipe connections at remotely located faucets in homes and buildings. The convective flow device has a two part housing that encloses a dual purpose poppet in an internal circular bo... | 10/13/1998 |
| 5725018 | Gravity check valve My invention is a gravity check valve 20 that will have a relatively low back flow of liquid when the sealing seat 2 is positioned above the porous seat 8 and the direction of back flow of liquid is opposite to the direction of the force of gravity 18.... | 03/10/1998 |
| 5715863 | Tube quick disconnector A connector for joining two tubes together. A female connector with a cavity made of resilient material such that when the male and female connectors are joined the leakage from the tube ends is minimal. In addition, the cavity made of resilient material ... | 02/10/1998 |
| 5680881 | Valve system for hermetic reciprocating compressor The present invention relates to a valve system for the hermetic reciprocating compressor, and more particularly, to reduce the gap volume of the spouting hole so as to help smoothly spout out the refrigerant through the spouting hole formed at the valve ... | 10/28/1997 |
| 5623958 | Low pressure relief valve A low pressure relief valve having a flow passage therethrough providing fluid communication between the interior and exterior of a vessel the interior of which is under a low positive or negative pressure. A valve port in the flow passage has a valve sea... | 04/29/1997 |
| 5611681 | Reciprocating rod type pump for shear sensitive material A pump for pumping shear sensitive material comprising a housing having an internal displacement chamber and a displacement rod. The displacement rod is reciprocable within the displacement chamber and the displacement chamber having an aperture through w... | 03/18/1997 |
| 5354133 | Relief valve A relief valve (6) includes a valve body (5), where a covering disk (1) holding a membrane (2) is completely built in. The axial dimension of the relief valve (6) coincides with the thickness of the valve body (5). The upper surface of the relief valve is... | 10/11/1994 |
| 5189877 | Exhaust manifold air injector An air injection device for attachment to the exhaust manifold of an internal combustion engine is described. A one-way or check valve permits air to be drawn into the air injector to the exhaust manifold when the pressure inside is less than atmospheric ... | 03/02/1993 |
| 5127904 | Improved needle-less parenteral fluid injector A fluid injector for use with a needle-less syringe or needle-less add-on IV line is disclosed. The injector is connected to a main IV line and has a fluid passageway from the syringe or the add-on IV set to the main IV line. The injector comprises an ant... | 07/07/1992 |
| 5041087 | Needle-less parenteral fluid injector A fluid injector for use with a needle-less syringe or needle-less add-on IV line is disclosed. The injector is connected to a main IV line and has a fluid passageway from the syringe or the add-on IV set to the main IV line. The injector comprises an ant... | 08/20/1991 |
| 4768720 | Fuel injection A fuel injector includes a solenoid operated valve that is opened on a periodic basis to meter fuel through a plurality of discharge passages, and also includes a rectifier valve that allows air to flow through the discharge passages when the solenoid ope... | 09/06/1988 |
| 4683910 | High-speed protective check valving for pressure transducers and the like Sudden increases in fluid pressure which could be injurious to the diaphragm and seals of a sensitive capacitive pressure transducer, or the like, are instantly protectively blocked or "checked" automatically by a miniature naturally-powered valve having ... | 08/04/1987 |
| 4586910 | Inflation valve for balloons and the like A toy balloon has an inflation valve secured thereon to selectively fill a chamber of the balloon with a fluid, such as helium. The valve comprises a stem defining a filling passage therethrough for communicating a pressurized fluid source with the inflat... | 05/06/1986 |
| 4570669 | Simplified springless check valve Disclosed is an improved check valve for in-line mounting with fluid conduits under pressure subject to directional flow control of the type comprising two components of simple configuration, the improvement including a tee shaped movable short valving pi... | 02/18/1986 |
| 4531543 | Uni-directional flow, fluid valve The valve has a seat and plate coupled together to define a shallow chamber therebetween, and a thin, metal, valving disc is freely movable, through the chamber, between the seat and plate. The disc has a metering orifice in the center thereof for communi... | 07/30/1985 |
| 4341240 | Beer tap construction This invention is an improvement in tavern fittings that are used for dispensing beer from kegs, and it is for the purpose of simplifying the construction of the equipment and the dispensing of beer more efficiently. The construction lends itself to easie... | 07/27/1982 |
| 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 valve, but prevents flow in the other direction through the ch... | 01/12/1982 |
| 4300592 | Pressure regulator A pressure regulator comprising a housing having an inlet connectable to a source of fluid at inlet pressure, an outlet, and a flow passage extending between the inlet and the outlet. A valve seat is mounted on the housing and in the flow passage. A valve... | 11/17/1981 |
| 4266568 | Vacuum breaker-pressure release device A vacuum breaker and pressure release valve for use with fuel storage tanks is disclosed which utilizes an intake check valve and an exhaust check valve to allow air to enter a tank from which fuel is being withdrawn by a pump while preventing air and vol... | 05/12/1981 |
| 4232706 | Automatic valve device for sanitation waste pipes The invention relates to an automatic air valve device for sanitation waste pipes for preventing communication in the rooms between the waste pipes and atmosphere and to permit the introduction of fresh air into the pipes when a negative pressure occurs. ... | 11/11/1980 |
