Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8002239 | Valve device A valve body 3 is provided at its one side with a part for receiving an operation tool which turns a valve spindle, the valve body further provided at the other side with a part for mounting a connection tool 8 by which an external piping is attached a... | 08/23/2011 |
| 7159731 | Air purge valve and filter pump cover employing same A filter pump cover according to the invention comprises a filter cap, an air purge valve, and a filter cap retainer. An air purge valve according to the invention is comprised of a valve cap, a screw-threaded portion, and a valve stem having one or more outward-fac... | 01/09/2007 |
| 7044443 | Flat valve device A flat valve device of a smaller size which can complete easy and swift air evacuation, in which the airtightness of a gas-containing structure and the operational safety can be improved, requiring no extra parts. The flat valve device includes a circular fra... | 05/16/2006 |
| 6553728 | Insulating glass unit pressure equalization valve A pressure equalization valve enabling equalization of pressure between the between-pane space of an insulating glass unit and ambient pressure, and glass units containing such a valve. The pressure equalization valve generally includes a valve body havin... | 04/29/2003 |
| 6352086 | Pressure relief nipple for RV hook-up A pressure relief device is placed in line with a water supply hose for a recreational vehicle to facilitate bleeding off back pressure when disconnecting the hose from a water hook-up. The device has a tubular nipple with a needle-valve assembly affixed ... | 03/05/2002 |
| 6273398 | Vent valve for gas strut A vent valve for a gas strut includes a first passage (9,12) in a body (2) extending from one side of a valve seat (8) to a surface of the body (2) which, in use, is exposed to the interior of a gas strut, and a second passage (15) in the body (2) extendi... | 08/14/2001 |
| 6244572 | Carburetor float bowl drain screw and recovery system A carburetor float bowl drain screw and recovery system includes a retaining screw having a threaded forward end, an intermediate portion having a plurality of transverse holes leading to an axial channel and an internally threaded end portion terminating... | 06/12/2001 |
| 6062540 | Double seal drain cock A drain cock device for venting or draining gas or liquid from a pressurized vessel, such as an air compressor, that provides occlusive closure of an opening in the pressurized vessel. When the drain cock is in an open position, gas or liquid may exit the... | 05/16/2000 |
| 5992293 | Cylinder device The invention concerns a device in an piston cylinder aggregate including a valve element (8) which comprises a valve body (9) for choking the flow in a fluid channel (6) in co-operation with a valve opening (7), wherein the device is arranged in a bore (... | 11/30/1999 |
| 5964448 | Gravity assisted access plug An access plug is provided for use in oil pans, transmissions and other fluid containers of equipment and the like. The access plug is weight imbalanced along the longitudinal axis to prevent inadvertent rotational movement of the access plug as may occur... | 10/12/1999 |
| 5957147 | Retaining snap ring safety adapter After removal of a valve cap from an in line shut off valve the Retaining Snap Ring Adapter with male threads and seat at one end, female threads and seat at the other end, a hex outer surface at the female threaded end, a longitudinal passageway down its... | 09/28/1999 |
| 5890513 | Non-wearing washer for fluid valve A non-wearing washer for fluid valve is non-fixedly mounted between washer retainer means disposed at a bottom end of a valve stem and the valve seat. The washer is retained in its operative position by configuring its top end to non-fixedly engage the wa... | 04/06/1999 |
| 5775672 | Release valve for lifting devices A release valve for a lifting device includes a valve stem, a fixing seat, a spiral spring, and a knob. The valve stem includes a first conical end mounted in an oil path of the lifting device, a mediate portion, and a second end beyond the lifting device... | 07/07/1998 |
| 5722451 | Device for bleeding or draining a duct A device for bleeding or draining a duct comprises a member for closing a passage that opens out into the duct, the member having a helical groove formed in its peripheral surface enabling it to be moved in the passage by screwing and unscrewing on a heli... | 03/03/1998 |
| 5562188 | Hydraulic brake system bleed valve and method for bleeding air An air bleed valve (40) includes a valve base (42), a valve cap (44) and an O-ring seal (46). The valve base (42) includes an inner threaded portion (58) that screws into a threaded bore (12) in the wall (14) of a linear actuator (16) and an inner end con... | 10/08/1996 |
| 5560457 | Bleeder screw for disc brake assembly A bleeder screw for use in a disc brake assembly including a caliper provided with at least one cylindrical recess formed therein and at least one aperture formed therein. The aperture in the caliper includes a non-threaded portion and a threaded portion.... | 10/01/1996 |
| 5553786 | Low volume irrigation device for horticulture and agriculture crops A spray and drip irrigation device connectable to a low volume irrigation tube comprises a lower member connected to the irrigation tube and formed with an exterior thread along a part of its outer surface along which an upper member threadedly moves to s... | 09/10/1996 |
| 5509435 | Non-leaking valve Disclosed is a valve having (A) a valve body with an aperture therethrough, a threaded tap crossing the aperture and opening to only one side of the valve body, (B) a tap screw having a head of larger diameter adopted to screw into the threaded tap, where... | 04/23/1996 |
| 5447214 | Hydraulic brake system bleed valve and method for bleeding air An air bleed valve (40) includes a valve base (42), a valve cap (44) and an O-ring seal (46). The valve base (42) includes an inner threaded portion (58) that screws into a threaded bore (12) in the wall (14) of a linear actuator (16) and an inner end con... | 09/05/1995 |
| 5368181 | Captured drain plug or vent A plug for a threaded opening in an oil pan or other fluid container. The plug has a cylindrical midportion and upper and lower threaded portions at each end of the midportion. The midportion has a side orifice that is connected to another orifice at the ... | 11/29/1994 |
| 5333837 | Valve plug This invention relates to the field of detecting leaks in valves and fluid system accumulation downstream of the valve. Specifically, the invention relates to a threaded valve plug containing a fluid expansion channel, hereinafter referred to as a "valve ... | 08/02/1994 |
| 5249696 | Manual relief gas vent A drum lid for a ventable drum has a depression formed in the surface of the lid. A vent valve is placed in the depression and extends through the lid. The valve has a valve outlet which opens into the reservoir in the lid. During venting the reservoir is... | 10/05/1993 |
| 5246201 | Orifice assembly for gas metering device An orifice assembly for use in sealed fluid connection between a gas inlet and gas outlet in a gas flow meter includes a rotor positioned for rotatable movement in fluid connection with both the gas inlet and gas outlet. The rotor includes a plurality of ... | 09/21/1993 |
| 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 |
| 5120020 | Valve with flush action An improved valve stem for a valve assembly is provided wherein the valve stem has an external threaded area engaging an internal threaded area of a valve housing for the valve assembly. At least one channel is provided along the threaded area to allow fl... | 06/09/1992 |
| 4986502 | Safety drain plug A drain plug for threaded engagement within a threaded drain opening of a pressurized system to prevent complete removal of the plug before release of any residual pressure within the system. An axially extending groove is formed in the threaded portion o... | 01/22/1991 |
| 4955406 | Connector for water pipes A connector for establishing a communication between an existing water pipe and an additional conduit has a clamp arranged to clamp an existing water pipe and including a clamp housing and clamping elements cooperating with the latter, and a valve arrange... | 09/11/1990 |
| 4905863 | Vent for portable gas tank or the like An improvement in manually operable vents includes a pair of barbs positioned on the end of a leg attached to a vent screw. A vent body is formed with a retaining well on its underside facing the barbs. A throat is formed in the vent body, opening into a ... | 03/06/1990 |
| 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 |
| 4815566 | Drain valve and system A drain valve and drain system which includes a gravity drain valve which can be readily installed with common tools, a hose connected to the valve and a drained fluid reservoir. Valve actuation is accomplished by a common tool such as a screwdriver or Al... | 03/28/1989 |
| 4809735 | Valve and tapping tee apparatus and method Apparatus and method for tapping a tubular member includes a split ring type clamp arrangement having a tapping tee assembly extending therefrom. The clamp arrangement includes a combination alignment/hold structure to facilitate orientation of the clamp ... | 03/07/1989 |
| 4752031 | Bubbler assembly A bubbler includes two molded plastic parts, a main body portion with an internally threaded upper chamber terminating in a valve seat, and a hollow cap with a downwardly extending externally threaded valve stem for engagement with the internally threaded... | 06/21/1988 |
| 4732589 | Flow regulating valve for use in an air scrubbing device A water control valve in a wet air scrubbing device to discharge and direct water flow within the scrubber. The valve is composed of a conical valve body made of polyurethane and a fluid discharge receptor firmly attached to the air scrubbing device and c... | 03/22/1988 |
| 4730636 | Valve and tapping tee apparatus and method Apparatus and method for tapping a tubular member includes a split ring type clamp arrangement having a tapping tee assembly extending therefrom. The clamp arrangement includes a combination alignment/hold structure to facilitate orientation of the clamp ... | 03/15/1988 |
| 4718636 | Branch coupling on flexible hose Purge branch coupling for a main flexible hose, reinforced or not, sheathed or unsheathed, of the type having the shape of a tubular insert which is intended to co-operate with a closure piece of its proximal extremity and which is integral with the main ... | 01/12/1988 |
| 4511119 | Adjustable valve assembly A vapor introduction system having an internal combustion engine which has an exhaust gas blow by hose connected to the intake of the engine. A fitting having a flexible hose is mounted on the cap of the windshield wiper fluid reservoir, with the hose ext... | 04/16/1985 |
| 4487392 | Radiator vent valve A vent valve for steam radiators fired by intermittent furnaces is disclosed. The valve includes a conduit with two portions. Two blocking rods form constricted areas within the two portions to throttle air escaping from the radiator.... | 12/11/1984 |
| 4470577 | Corrosion resistant bleeder screw arrangement A bleeder arrangement for a hydraulic system of the type used in vehicle brakes. It includes a bleeder screw and bleeder passage construction which completely protects the bleeder screw threads from any exterior corrosive agents. The screw body is arrange... | 09/11/1984 |
| 4418888 | Angle cock valve The angle cock valve has all plastic parts to prevent galvanic corrosion when used in hot water tanks and the like. The valve includes a valve body, a valve stem and a stem retainer. The valve body has an inlet bore, an outlet bore, and a valve stem recei... | 12/06/1983 |
| 4383548 | Evacuating-charging valve assembly An evacuating-charging valve assembly consisting of a valve permanently mtable onto a fluid system such as an air conditioning system and a connecting head temporarily attachable to the valve. Two embodiments are shown, in both of which the valve has a f... | 05/17/1983 |
