Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7140388 | Dual ball valve air vent valve A unitary valve housing has an upper and lower portion. The upper portion has an inner chamber for accommodating two spaced apart balls and a cylindrical side skirt with oppositely positioned openings. The lower portion is cylindrical in shape and has a top shelf wi... | 11/28/2006 |
| 6532988 | Air admittance valve for sanitary waste pipe system The invention relates to a valve for admitting atmospheric air into the waste pipe system in response to pressure reduction in the system for protecting the water traps in the system and to prevent atmospheric discharge of contaminated air from the waste ... | 03/18/2003 |
| 6116272 | Debris resistant oil pressure relief valve The present invention provides an oil pressure relief valve having grooves along the wall of the piston. These grooves channel pressurized oil through areas of the vents which are most susceptible to debris buildup. This channeling of pressurized oil acts... | 09/12/2000 |
| 5823226 | Automatic variable-demand flow regulator A variable-demand flow regulator regulates water flow into a building based on variable water supply and variable demand pressures. When water demand increases downstream of the variable-demand flow regulator, the water pressure decreases on the downstrea... | 10/20/1998 |
| 5769117 | Guard and seat assembly, and a guard structure therefor A fluid control valve has a valve guard and a valve seat, and the guard has a circular recess formed in a front surface thereof in which to nest the valve seat. In one embodiment, a pair of valve guards are integrally joined together by a plurality of web... | 06/23/1998 |
| 5577901 | Compressor with valve unit for controlling suction and discharge of fluid A compressor whose structure is simple, assembling is easy and refrigeration efficiency is improved. A valve unit of the compressor includes a valve plate 230 in which a suction hole 231 and a discharge hole 234 are formed, a suction valve plate 220 dispo... | 11/26/1996 |
| 5566869 | Arm supported drinking container A container for supporting a quantity of fluid relative to a limb of an individual. The inventive device includes a container having an arcuate inner side wall positionable along an exterior of a human limb. A plurality of securing straps extend from oppo... | 10/22/1996 |
| 5452737 | Proportional fluid blending device for blending two or more gases or liquids A device for the blending of gases or liquids having an inlet adapter, a main body, an outlet adaptor, a valve plate, and a spring arm. Air enters the inlet adaptor and passes through an air port in the main body. Fuel is supplied to a fuel port in the ma... | 09/26/1995 |
| 5445870 | Method of producing overpressure valve for packaging containers A method of producing overpressure valves for packaging containers supplied in a roll, transported in this form to a packaging machine, separated at the machine and attached to packaging containers by means of an adhesive coated surface. For this purpose ... | 08/29/1995 |
| 5035261 | Pump and valve apparatus A pump consists of a valve box in which a valve chamber inlet and outlet are each provided with a valve, and reciprocating member in a cylinder that communicates with the valve chamber of the valve box to open the valves. A pressure action chamber is prov... | 07/30/1991 |
| 4948349 | Pump and valve apparatus A pump consists of a valve box in which a valve chamber inlet and outlet are each provided with a valve, and a reciprocating member in a cylinder that communicates with the valve chamber of the valve box to open the valves. A pressure action chamber is pr... | 08/14/1990 |
| 4945946 | Valve seat for a plate-type, fluid-control valve In lieu of the customary concentric annuli upon which to receive a ported valving plate, the seat has a plurality of lands at a common radial distance inwardly from the periphery thereof. The separations between the lands, circumferentially, define additi... | 08/07/1990 |
| 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 compartment. The inlet port has an inner cylindrical port... | 02/20/1990 |
| 4852608 | Fluid control valve The valve, depicted as of the plate-type, has a ported valve seat, stop plate, and valving element (movable between the plate and seat) biased toward the seat by compression springs. Eight sets of compression springs are employed, in the disclosed embodim... | 08/01/1989 |
| 4846372 | Dispenser for paste compositions A multi-component toothpaste pump dispenser utilizes a delivery tube extending below the reservoir of striping paste and into the reservoir of main paste. The delivery tube has holes at the juncture of the top of the tube and the top wall of the pump cham... | 07/11/1989 |
| 4846379 | Nozzle assembly for a liquid dispensing machine A nozzle assembly for dispensing measured volumes of a liquid has a valve for dividing an inflowing volume of liquid into a plurality of equal outflowing aliquots through the use of a radial spreading zone in the valve. The valve is connected to a plurali... | 07/11/1989 |
| 4756334 | Check-valve assembly, in particular for a pressurized water reactor This check-valve assembly, adapted to close a fluid flow circuit without creating overpressures or hammering in this circuit, comprises a tubular body (1) connected at both of its ends to a respective pipe section (2, 3), a closure member (4) mounted to b... | 07/12/1988 |
| 4733690 | Hydraulic valve The invention relates to a hydraulic valve having a housing (2, 2', 2") in which a housing partition formed with at least one passage (7) therethrough is provided between an inlet bore (3) and an outlet bore (4) aligned therewith, said passage having asso... | 03/29/1988 |
| 4702272 | Valve device for increasing the fuel economy and reducing the emissions from an internal combustion engine Valve device includes a valve chamber containing three spherical members in stacked relation which produce a limited pulsating air flow that is metered in precise amounts at any given time into the fuel/air path of a gasoline powered internal combustion e... | 10/27/1987 |
| 4645043 | Hydraulic damper of adjustable damping force type A hydraulic damper of adjustable damping force type includes a cylinder containing hydraulic liquid, a piston working in the cylinder and partitioning the interior thereof into two liquid chambers and having thereon a damping force generating mechanism, a... | 02/24/1987 |
| 4645044 | Hydraulic damper of adjustable damping force type A hydraulic damper of the adjustable damping force type includes a cylinder containing hydraulic liquid therein, a piston working in the cylinder and partitioning the interior thereof into two liquid chambers and having a damping force generating mechanis... | 02/24/1987 |
| 4599081 | Artificial heart valve An artificial heart valve of turbine-like construction includes a rotor that translates and rotates to cause a plurality of rotor blades to either occlude or unocclude spaces between adjacent ones of a plurality of stator blades.... | 07/08/1986 |
| 4574835 | Valve component A valve plate for a plate-type non-return valve includes at least one valve closure portion and at least one resilient flexible guide arm connecting with the valve closure and the guide arm or arms are configured to include a continuously curved portion g... | 03/11/1986 |
| 4570666 | Unidirectional, fluid control valve In the first-depicted embodiment, the valve is of the ported, plate-type, having a ported valve seat, stop plate, a buffer plate, and a pair of valving elements. Stop pins extending from the stop plate restrict the lift of one of the ported valving elemen... | 02/18/1986 |
| 4562013 | Carbonator valve In a drink dispenser for dispensing carbonated drinks which includes a source of carbon dioxide at high pressure and a source of carbon dioxide at a lower pressure, the lower pressure being a pressure utilized for dispensing carbonated water, water within... | 12/31/1985 |
| 4513784 | Check valve assembly A check valve assembly is disclosed having a valve chamber with an inlet port and an outlet port. An elastomeric umbrella valve is contained in the chamber between the ports and is attached by an integral stem in a preloaded condition to normally close th... | 04/30/1985 |
| 4444219 | Overpressure valve for packages with flexible walls The present invention is with respect to an overpressure valve for packages with flexible walls, having a valve body able to be fluid-tightly joined with such a package. The valve body has a flat valve seat having thereon a diaphragm with a valve shutting... | 04/24/1984 |
| 4369022 | Valve assembly for hydraulically actuated downhole pumps A check valve assembly for use as intake and discharge valves for pumps. The assembly includes a valve element made into a square configuration, the corners of which are slidably received in indexed relationship within radially spaced, longitudinally exte... | 01/18/1983 |
| 4325680 | Valve system for encapsulated motor-compressor units The invention relates to a valve system for encapsulated motor-compressor units comprising a cylinder, a piston moving with reciprocating motion in the cylinder, a valve plate which upperly closes the cylinder, and a head fixed on to the valve plate, wher... | 04/20/1982 |
| 4314596 | Retention device for capturing a spent thermal fuse A retainer member is connected to a relief valve attached to a rim of an aircraft tire containing a fluid under pressure. The relief valve has a core made of a fusible material which is responsive to a predetermined temperature that causes the fusible mat... | 02/09/1982 |
| 4299250 | Check and regulator valve A check and regulator valve, particularly for pipe lines carrying gaseous media, which includes an intake or inlet passage, a valve seat provided with open means for permitting a through flow of a medium, and a rubber-elastic setting member that closes of... | 11/10/1981 |
| 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, when the valve members are pressed together, are blocked ... | 02/10/1981 |
| 4168722 | Feather valve A feather valve is presented having shock absorbing strips in the guard section to absorb impact loads and dampen vibration of the feather strips.... | 09/25/1979 |
| 4161996 | Exhaust muffler An exhaust muffler intended for noise dampening of, for instance, pneumatic tools, comprising a variable flow restricting passage, an attenuation chamber and a non-variable flow restricting passage. A valve body is arranged to control said variable flow r... | 07/24/1979 |
| 4130131 | Compressor valve A valve closure replacement kit for a compressor valve of the type having a valve plate, and a plurality of linear slotted openings in such valve plate for passage of air or gas therethrough and a valve head located above said valve plate in spaced relati... | 12/19/1978 |
| 4099540 | Two-way bypass valve A two-way filter bypass valve seat has several holes, in this case four. Two similar valve plates with two holes each are arranged at 90° to each other on opposite sides of the seat so that two holes in each plate align with two of the holes in the seat.... | 07/11/1978 |
| 4021058 | Safety bag device for vehicle In a safety bag device for use in a vehicle and of the type wherein a rupture plate is interposed between a high pressure gas container and a conduit leading to an inflatable safety bag. A nozzle having a plurality of nozzle holes opened into the conduit ... | 05/03/1977 |
| 3980097 | Fire hydrant with drain valve and backflow preventer mechanism A fire hydrant of the "dry" barrel type having an improved means of draining the barrel after the hydrant has been used and the main hydrant valve closed. The hydrant is provided with a drain passageway from the interior of the barrel above the main hydra... | 09/14/1976 |
| 3973587 | Check valve assembly A check valve assembly for use in a flow conductor. A tubular valve body with a central flow passage is mounted in the assembly. A spring urges the body toward closed position in which a rigid sleeve encircles and covers outlet ports in the downstream end... | 08/10/1976 |
| 3952766 | Backflow preventer A reduced pressure principle backflow preventer includes downstream and upstream check valves separating an inlet and an outlet from an intermediate zone. A differential pressure relief valve maintains the intermediate zone at a pressure lower than the in... | 04/27/1976 |
