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| Number | Title | Issue Date |
| 6719273 | Water outlet valve for water bag mouthpiece An improved water outlet valve structure of a water bag mouthpiece, which includes: a nozzle which is composed of a supporting frame and a soft suction portion wrapping around the supporting frame; a threaded base which has a base, a threaded connecting section exte... | 04/13/2004 |
| 6557584 | Flow control and flow rate control mechanisms for use in brewing machines with fluidly connected chambers A brewing machine with brewing water flow control mechanisms for controlling flow between chambers, includes a filling chamber in fluid connection with a heating reservoir. In one aspect of the invention, a control chamber with a sealable opening is forme... | 05/06/2003 |
| 6517050 | Two way non leaking flow valve with full-open capability Disclosed is a two way valve that has a valve chamber having a first valve chamber opening bounded and a fluid flow opening. A chamber shuttle, adapted to travel within the valve chamber, is characterized by a chamber shuttle cavity and has a first chambe... | 02/11/2003 |
| 6113071 | High temperature gas flow rate restrictor device A gas flow restriction device for restricting the flow rate of heated gas in a conduit. The flow restriction device is essentially a two piece assembly that includes a valve housing and a valve gate structure that sits within the housing. The valve housin... | 09/05/2000 |
| 5938176 | Tap or valve An aim of the invention is to provide a simple and effective one-piece tap which can be readily and economically manufactured. A tap for a liquid container is made from natural or synthetic rubber or a resilient plastics material. It has a base portion 10... | 08/17/1999 |
| 5788220 | Linearly actuated gas flow control assembly This invention consists of a linearly operated gas vent assembly in which the dynamic range of gas flow is increased by use of a low drag actuator profile. The structure consists generally of a swivel vent module and a housing module, in which the swivel ... | 08/04/1998 |
| 5538040 | Pneumatic control valve A valve for controlling flow of air comprising in combination a valve housing having a chamber, inlet and outlet air flow paths communicating with the chamber adjacent oppositely facing sides thereof, and a valve seat arranged in one of the flow paths; a ... | 07/23/1996 |
| 5156603 | Slide valve A slide valve, especially a drain valve, for collection bags, such as urine collecting bags, including an external tubular member and an internal tubular member, both members having a flow passage and being telescoped inside one another in an axially slid... | 10/20/1992 |
| 5071411 | Pressure-actuated valve for sealing flow conduit A pressure-actuated valve for sealing a flow conduit. The valve comprises a housing, and a tubular resilient valve carried within the housing. The tubular valve defines a lumen extending through the housing. Means are provided for varying the pressure in ... | 12/10/1991 |
| 4807700 | Wireline downhole annulus valve An improved tubing hanger having an annulus passageway therethrough and with an improved annulus control valve therein including an annular hanger body having an annulus passageway extending therethrough with a chamber interrupting said passageway and a v... | 02/28/1989 |
| 4794944 | Plastic valve A service valve includes a valve body (12) having an upper chamber (18), a lower chamber (20), an open top end (22) and an open bottom end (24). The lower chamber (20) includes an inlet opening (26) and an outlet opening (28). A valve member (14) is dispo... | 01/03/1989 |
| 4744390 | Plastic valve A plastic service valve includes a valve body of molded plastic having upper and lower chambers. The valve body is open at the top and bottom ends. The lower chamber includes inlet and outlet openings. A thrust seat is formed within the upper chamber betw... | 05/17/1988 |
| 4566541 | Production tubes for use in the completion of an oil well A connector for incorporation in a production tube for an oil well, below the packer, comprises a closing flap which closes when a first retractable ball seat is displaced downwards, in order to provide a safety device during the installation of the well ... | 01/28/1986 |
| 4511120 | Plastic service valve A valve includes a molded plastic body portion having an internal chamber with upper and lower portions. Fittings connect the valve to conduits of a piping system. A valve seat surrounds inlet and outlet openings in the chamber lower portion. A plastic pl... | 04/16/1985 |
| 4256106 | Resealable device A device, particularly suitable as a connector, comprised of a housing having an open end closed by an elastomeric membrane. The membrane has at least one preformed opening, which is normally closed and which is opened upon deformation of the membrane, wi... | 03/17/1981 |
| 4110057 | Gas lift mandrel valve mechanism A mandrel valve and gas lift valve mechanism that is adapted to be interconnected in a production tubing string within a well in order to produce fluid from the well under conventional gas lift methods. The gas lift valve includes a housing carried by a m... | 08/29/1978 |
| 3960366 | Reverse acting lock open crossover valve The apparatus and method provides the ability to selectively treat a producing zone in a well and to gravel pack an annulus in the well casing outside a screen type liner pipe. A tubing string extending from the surface of the well bore is connected to a ... | 06/01/1976 |
