Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7284962 | Micropump This invention provides a fluid pump using perforate elements and closure elements which are alternately displace and relates particularly but not exclusively to miniature fluid pumps and pumps suitable for delivery of liquid pharmaceutical formulations. In the art ... | 10/23/2007 |
| 7228870 | Fuel saving valve assembly There is provided a one-way gasoline valve that is functional with conventional gasoline dispensing pumps in the United States today. An outer tubing body is open at both ends. One end is threaded to allow it to be placed into the end of a threaded gasoline dispensi... | 06/12/2007 |
| 7025082 | On-board refueling system for vehicles An on-board refueling system for vehicles. The refueling system includes a coil reel and a fuel pump. The coil reel has a forward end and a rearward end, a handle proximate the forward end, and a nozzle attached to the forward end. The nozzle is configured to engage... | 04/11/2006 |
| 6398183 | Automatic shut-off device for a valve for compressed or liquefied gases The shut-off device is intended for refillable gas cylinders. In order to be sure that only authorized persons can refill the cylinder, the filling device comprises a non-return valve element (16) which prevents filling and which can only be neutralized u... | 06/04/2002 |
| 6257503 | Dispenser head and receptacle fitted therewith A spray head for fixing on a control rod of a valve or a pump. The spray head includes a body and a shutter disposed in a housing of the body. The housing is suitable for dispensing substance under pressure. At rest the shutter is in a closed position in ... | 07/10/2001 |
| 6227239 | Spring-loaded safety valve An automatically resetting safety valve for a generator circuit breaker is to open rapidly and wide, even if the pressure applied to a valve-closing body (1) does not increase substantially over a valve stroke (a) or even falls. In order to ensure this, a... | 05/08/2001 |
| 6044849 | Fluid pressure relief valve with variable opening pressure A fluid pressure release valve includes an aperture through which fluid can flow. An element is movable to unseal the aperture and to open the valve when a force exerted by the fluid in the valve exceeds a predetermined force. An electromagnetic biasing a... | 04/04/2000 |
| 6039074 | Pressure-induced shut-off valve for a liquid delivery system A pressure-induced shut-off valve for a liquid delivery system with a back pressure regulator having a positive shut-off capability is provided. The pressure-induced shut-off valve may incorporate an integrated purge valve or an integrated cross flow nebu... | 03/21/2000 |
| 5921271 | Safety shut-off valve for high pressure bottles A safety shut-off having a spring loaded ball which moves into engagement with a valve seat in response to excess gas flow. Engagement of the ball with the valve seat shuts off gas flow. Excessive gas flow is generally encountered when a catastrophic brea... | 07/13/1999 |
| 5727594 | Low actuation pressure unidirectional flow valve A low actuation pressure, unidirectional flow valve comprising a housing including a fluid flow passage extending therethrough which defines first and second sections. Disposed within the housing between the first and second sections is a valve member. Th... | 03/17/1998 |
| 5715996 | Fuel injection nozzle A fuel injection system is disclosed having a fuel injection nozzle which receives pressurized fuel pulses from a source. The nozzle includes a body having a tubular nozzle body with a longitudinally extending opening extending therethrough. A valve seat ... | 02/10/1998 |
| 5671890 | Fuel injection nozzle A fuel injection system is disclosed having a fuel injection nozzle which receives pressurized fuel pulses from a source. The nozzle includes a body having a tubular nozzle body with a longitudinally extending opening extending therethrough. A valve seat ... | 09/30/1997 |
| 5242581 | Shut-off valve A shut-off valve for use in a filtration system with a filter element having a tubular coupling member at one end arranged so that when the filter is installed in the system the coupling element extends into a tubular housing to displace a spool to thereb... | 09/07/1993 |
| 5161573 | Pressure equalizing damper A self-adjusting damper device is provided for installation into an air-conveying duct to prevent the development of damaging low pressure within the duct. The device utilizes a panel adapted to occlude an aperture in the duct. Springs hold the panel in a... | 11/10/1992 |
| 5070845 | Fuel injection nozzle A fuel injection nozzle has a tubular body adapted to receive fuel, a tubular seat member mounted to the body, the seat member having an opening for discharging fuel and a valve seat surrounding the opening, a poppet valve member engageable with the valve... | 12/10/1991 |
| 5049008 | Air pulse discharge control valve for fluidizing dry particulate material A self acting pressure air pulse control valve for use with fluidizing and pneumatic conveying systems for dry particulate material comprises a housing having a chamber in which a plate type closure member and an actuating piston are disposed and intercon... | 09/17/1991 |
| 4846217 | Injection valve A pressure sensitive valve suitable for various fluid delivery applications is disclosed consisting of a hollow body having an inlet and valve seat which defines the outlet. A valve stem is disposed within the hollow body, the stem having a valve head ada... | 07/11/1989 |
| 4827975 | Valve The check valve employs a helical tension spring which is connected at one end to the valve lid on the axis of the valve lid and at the opposite end via a ring on the axis of the valve body. Wedge-shaped elements are provided in the lid to engage with an ... | 05/09/1989 |
| 4827972 | Priority flow control valve An automatic switching valve mounted between two fluctuating pressure sources automatically switches from one source to the other to supply gas or liquid from the source that is under the higher pressure. A T- housing conveys gas or liquid from either sid... | 05/09/1989 |
| 4681139 | Elastomer ball check valve The disclosure is of a ball check valve comprising a valve body with a flow passageway completely through it. The flow passageway is counterbored at one end to form a conical seat and at the other end to form a radial shoulder. The valve member comprises ... | 07/21/1987 |
| 4631923 | Solenoid operated check valve A check valve to be interposed between a source of pressure and a device to be moved by the application of the pressure. The valve has a passageway communicating with the source of pressure and a passageway communicating with the device. There is a valve ... | 12/30/1986 |
| 4612962 | Spring-loaded valve In a spring-loaded valve, a coil spring functions not only to bias a valve member toward its seat but also to retain the valve member in assembly with the valve.... | 09/23/1986 |
| 4543990 | Irrigation valve A valve is mountable in an opening in a gated pipe to control water flow, particularly in a cablegation system. A gasket is mountable in the irrigation pipe opening and a hollow leg of a T-shaped valve housing is inserted into the mounting member. The hou... | 10/01/1985 |
| 4375825 | Integral valve apparatus A valve apparatus is integrally molded from an elastomeric material so as to form a valve seating portion including a valve opening, a valve member and connective strands extending from the valve seating portion to the valve member. The valve member is in... | 03/08/1983 |
| 4286664 | Positive seal float collar A device for insuring a positive fluid seal between a float collar valving element and valve seat therein is disclosed. The device comprises a rubberlike tension strap or compression steel spring positioned within the float collar valve assembly for urgin... | 09/01/1981 |
| 4209485 | Method of making a valve apparatus A valve apparatus is integrally molded from an elastomeric material so as to form a valve seating portion including a valve opening, a valve member and connective strands extending from the valve seating portion to the valve member. The valve member is in... | 06/24/1980 |
| 4195656 | Orifice device with safety shut-off for pressure regulators A pressure regulator of the spring loaded diaphragm type having a chamber on one side of the diaphragm and provided with an inlet and an outlet separated by a transverse wall into which an orifice device is mounted for stopping the flow of gas through the... | 04/01/1980 |
| 4157281 | Method and apparatus for reclaiming solvents from solvent-bearing sludge material A solvent-bearing sludge material is pumped by a variable speed positive displacement pump from a preparation mixing tank through a pressure responsive valve which distributes the material into the upper portion of an insulated distilling or processing ve... | 06/05/1979 |
