Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7219693 | Container shut-off valve with venting An apparatus for effecting transport of a liquid from a container defining an interior storage volume and having a container aperture to effect communication between the interior storage volume and an environment external to the container, the apparatus comprising a... | 05/22/2007 |
| 7093821 | Fluid flow control valve The present invention provides a fluid flow control valve for regulating the flow of fluid, and a method for assembling the valve. The fluid flow control valve includes a housing having a generally spherical exterior portion sized to pivotally cooperate within a cou... | 08/22/2006 |
| 7059423 | Jackhammer system A jackhammer system for reducing the vibration and noise experienced by an operator of the jackhammer. The jackhammer system includes a housing, a chisel movably positioned within a lower neck of the housing, a pair of flywheels rotatably attached to a pair of suppo... | 06/13/2006 |
| 7044440 | Outfall valve structure conforming to ergonomics An outfall valve structure conforming to ergonomics is primarily composed of a casing, which is moveably connected with a hollow pipe. The casing is in the form of a short pipe, the exterior wall thereof is provided with a coupler with an opening provided on the bot... | 05/16/2006 |
| 7025329 | Needle valve for flow control A needle valve assembly for providing fluid flow control includes a motor; an internally threaded valve body; and an externally threaded plunger threadably engaged with the internally threaded valve body and rotatably and reciprocally driven by the motor, wherein th... | 04/11/2006 |
| 6991216 | Valve A valve, such as a liquid level sight glass gage valve, has a valve unit and a passageway that extends through the valve unit. The passageway has a stem receiving area, a seal receiving area, and a bonnet receiving area that has a non-circular inner perimeter. A pac... | 01/31/2006 |
| 6957799 | Valve for a non-refillable pressurized container A valve for a pressurized container includes a valve housing having a central bore and a port in the for connection of a nozzle. Preferably, the valve has a unidirectional stepped valve housing. In the housing is a central bore that includes an upper portion, lower ... | 10/25/2005 |
| 6874999 | Micropumps with passive check valves An exemplary device and method for microfluidic transport is disclosed as providing inter alia a passive check valve (100), a fluid inlet channel (210), a fluid outlet channel (220) and a pumping cavity (240). The fluid inlet channel (... | 04/05/2005 |
| 6488264 | Governor valve device in a pressure fluid operated tool Governor valve device for a pressure fluid operated tool having a ball valve (23, 24), the valve ball (24) of which is provided in a cavity (25), open towards the seal ring (23) of the valve, in a movable piston (26). A spring-loaded member (30) urges the... | 12/03/2002 |
| 6047949 | Programmable fluid flow control valve A fluid flow control valve which is mechanically programmable to enable the control of flow rate and/or timing of the supply of fluid therethrough. The valve comprises a housing having an inlet and outlet portion. An axially extending passageway within th... | 04/11/2000 |
| 5992440 | Washer saver faucet valve The present invention provides a novel faucet with a non-circular slider assembly to which a resilient seat-washer is attached. In a preferable embodiment of the invention the slider assembly has a hexagonal cross-section. In embodiments of the invention ... | 11/30/1999 |
| 5899229 | Torch valve assembly A torch valve for pressurized fuel includes a valve body having a central, axial bore and a valve needle threadedly mounted in the bore for selectable axial positioning in the bore. A inlet portion of the bore forms an inlet connectable to a source of pre... | 05/04/1999 |
| 5226451 | Flow selector valve A flow selector valve is described in which a valve housing with a central bore is provided. The housing includes a plurality of axially spaced discharge openings and an intake opening openly communicating with the central bore. An elongated spool member,... | 07/13/1993 |
| 5195719 | Butterfly valves with actuators carried on valve plate A butterfly valve (30) in which an actuator (38) is secured to the plate (36). The actuator (38) is carried with the plate (36) when the latter moves. The plate (36) may be revolvable and translatable relative to the shaft (42). The actuator (38) may be u... | 03/23/1993 |
| 5056557 | Butterfly-type check valve The invention is a butterfly-type check valve (8) wherein the valve plate (18) moves translationally relative to a pivot axis (90) and incident to its own rotational movement. The invention employs biasing means (102, 104, 108) for initiating movement of ... | 10/15/1991 |
| 5050633 | Fluid valve A fluid valve includes a valve body having a fluid inlet and a fluid outlet. A valve seat formed from the valve body between the fluid inlet and fluid outlet for the passage of fluid therebetween. A movable valve member formed from ceramic material is pos... | 09/24/1991 |
| 5046527 | Butterfly-type check valve A butterfly-type check valve (8) in which a valve plate (18) moves translationally relative to a pivot axis (90) and incident to rotational movement (118) of the plate. The translational movement is effected by mechanical links (38, 40) which are pivotall... | 09/10/1991 |
| 5000212 | Butterfly valve method and apparatus employing variably positionable pivot shaft A butterfly valve method and apparatus (10) employing a variably positionable pivot shaft (30). The apparatus (10) comprises a duct (16), a valve plate (12), and a pivot shaft (30). Near closed rotational positions of the valve plate (12), the plate is pi... | 03/19/1991 |
| 4967778 | Butterfly valve apparatus and method A butterfly valve includes a duct defining a fluid flow path and a plate-like valve member pivotal in the duct to in one position span and close the latter. The valve member is pivotal to a second position spanning the duct and extending parallel to the f... | 11/06/1990 |
| 4834140 | Brake bleeder valve A brake bleeder valve includes a spring biased ball check valve which allows bleeding of brake wheel cylinders by a single individual. The brake bleeder valve has an elongated generally cylindrical body terminating at a lower end in a conical tip dimensio... | 05/30/1989 |
| 4784174 | Drain and shutoff valve assembly A drain and shutoff valve assembly for a water pressure tank. The lower end of the tank is provided with a non-circular opening within which the drain and shutoff valve assembly is mounted. The assembly includes a plastic body having an outer non-circular... | 11/15/1988 |
| 4708318 | Post valve handle A valve and handle assembly is disclosed for controlling the flow of breathing oxygen from lightweight oxygen cylinders. The valve provides a stem extending from the valve formed with a plurality of barbs which provide ramps and shoulders. The stem also p... | 11/24/1987 |
| 4708171 | Drain valve The valve includes a valve member adapted to be moved axially between open and closed positions in a valve housing when the valve member is rotated. The valve member includes a passage for admitting air into a vacuumized vessel and includes a separate pas... | 11/24/1987 |
| 4603796 | Closing and filling unit for a tank containing a fluid under pressure A closing and filling unit having a piston valve (22) whose closure member (28) is provided with axial openings. A rotatable and slidable element (32) is provided for actuating the valve. Arrangements (35, 40, 41, 33, 36) are provided for utilizing the pr... | 08/05/1986 |
| 4512550 | Sealing means for valve spindle A large manually operated leak-proof corrosion-proof low-cost shut-off or stop valve for handling high pressure refrigerant liquids and/or gases comprises a valve body formed of two sheet metal hemispheres welded to the periphery of a circular metal valve... | 04/23/1985 |
| 4484596 | Means for securing valve disc to valve spindle A large manually operated leak-proof corrosion-proof low-cost shut-off or stop valve for handling high pressure refrigerant liquids and/or gases comprises a valve body formed of two sheet metal hemispheres welded to the periphery of a circular metal valve... | 11/27/1984 |
| 4417601 | Variable proportioning valve for balanced pressure proportioning systems, and system containing the valve A novel variable proportioning valve for balanced pressure proportioning systems and variable liquid proportioning system incorporating such a valve. The valve is adjustably operable in a system to proportion or meter two liquids, for example, at constant... | 11/29/1983 |
| 4322058 | Pipe side valve Valve apparatus for controlling flow of particulate material, such as sand or other abrasive material, from a tank or hopper. The valve has a unitary plunger which is movable axially with respect to a lateral particulate material inlet between positions c... | 03/30/1982 |
| 4185807 | Plastic valve An all-plastic valve including a molded plastic housing, a molded plastic retaining nut, and a molded plastic valve stem.... | 01/29/1980 |
| 4052998 | Three way cock for filter press plates A three way cock for filter press plates comprising a cock body defining a cylinder portion, a foot portion extending parallel to the cylinder portion, for applying the cock to the side of the plate, and a flange portion connecting the cylinder portion an... | 10/11/1977 |
