Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
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| Number | Title | Issue Date |
| 7726329 | Discharge rate and pressure control solenoid valve The inventive discharge rate and pressure control solenoid valve (1) is used for a circuit consisting of a low pressure part and a high-pressure part and controls the discharge rate of a low-pressure fluid with the aid of a sliding spool (18) in a line... | 06/01/2010 |
| 7367371 | Inflation circuit, in particular for a tire mounted on a wheel, and corresponding wheel An automatic inflation and deflation circuit for a tube (3) is produced with a single compressed fluid supply conduit (5). The inflation results from subjecting a non-return valve (VA) in series on the conduit to excess pressure. Deflation is provided ... | 05/06/2008 |
| 7195197 | Techniques for controlling a fin with unlimited adjustment and no backlash A fin control assembly includes a housing, an arm configured to couple to a fin and to steer the fin relative to the housing, and a locking member disposed within the housing. The locking member is configured to (i) lock the arm in a substantially fixed state to inh... | 03/27/2007 |
| 7146998 | Hydraulic valve A stepped down groove 53 is provided around the peripheral surface of a rod portion 43 of a spool 40 which faces a third oil groove 33. Both the axial ends 53a and 53b of the stepped down groove 53 are l... | 12/12/2006 |
| 7028710 | Hydraulic valve system A hydraulic valve system (1) has a supply connection arrangement, having a high-pressure connection (P) and a low-pressure connection, with a working connection arrangement, having two working connections (A, B), with a control valve (3), which is arra... | 04/18/2006 |
| 6705339 | Surge check unit for a liquid distribution system A safety check unit for use in a liquid distribution system for preventing damage to a pump and associated components of the system in event of loss in pumping pressure. The unit provides a check component to prevent back-flow of the liquid when the pump is shut dow... | 03/16/2004 |
| 6273686 | Apparatus and method for controlling a rated system pressure The rated system pressure in a pressure control system is adjusted through a pressure relief valve (2). In addition to the pressure relief valve (2), the system includes a check valve (4), a pressure sensor (3), a position switch (10), a first pressure ad... | 08/14/2001 |
| 6196246 | Freeze-resistant plumbing system in combination with a backflow preventer A plumbing system which, when ambient outdoor temperatures drop below freezing, circulates water to prevent it from freezing, utilizing a check valve to prevent water from flowing back into the water main and further utilizing a relief valve which can ope... | 03/06/2001 |
| 6178998 | Reverse flow prevention apparatus A reverse flow prevention apparatus is provided so as to drastically decrease pressure loss without installing an independent pressure regulator mechanism therein. With the reverse flow prevention apparatus, a flow path running along a straight line is pr... | 01/30/2001 |
| 5957148 | Valve system having a deadman controlled actuating member in a vented chamber A main valve receives fluid at an inlet and transmits the fluid to an outlet. The main valve has a rear face. A surge control servo valve responds to a load sense signal and moves between a closed position and an open position in which the fluid is transm... | 09/28/1999 |
| 5950653 | High pressure relief valve for use with a backflow preventer A backflow preventer assembly installed between a supply line and a service line, comprising one or more check valves and a high pressure relief valve operating to discharge water in the service line under a high pressure condition.... | 09/14/1999 |
| 5860442 | Fluid pressure shutoff and relief valve A safety valve for a preventing over pressure in a fluid processing system utilizing a fluid pressure regulator in a fluid supply line upstream from the processing vessel is formed by a valve, normally maintained open by a pressure responsive collapsible ... | 01/19/1999 |
| 5580817 | Valve assembly A valve assembly for a discharge device, in particular a steering pump, including a flow control valve for controlling flow from the discharge device to an actuator, and a pressure-limiting valve, wherein both valves form separate components of the valve ... | 12/03/1996 |
| 5549131 | Automatic recirculation valve An automatic recirculation valve having a body portion, a central hub integral with said body portion and inlet, main outlet and recirculation outlets. A main valve element responsive to flow from said inlet to said main outlet includes a hollow stem form... | 08/27/1996 |
| 5135020 | Pressure sequence valve A pilot controlled sequence valve having a pilot valve and a main valve is provided. This sequence valve is preferably used for switching on and switching off a charging operation of a hydraulic accumulator. The displacement volume of the main spool of th... | 08/04/1992 |
| 5099871 | Low friction proportional unloading valve A low friction proportional unloading valve mechanism for pressurized fluid circuits incorporating a valve housing forming primary and bypass fluid circuits. A normally closed unloading valve normally prevents the flow of incoming fluid to the bypass flui... | 03/31/1992 |
| 5090437 | Low friction proportional unloading valve A low friction proportional unloading valve mechanism for pressurized fluid circuits incorporating a valve housing forming primary and bypass fluid circuits. A normally closed unloading valve normally prevents the flow of incoming fluid to the bypass flui... | 02/25/1992 |
| 5065784 | Valve assemblies and means An hydraulic valve assembly controls the supply of hydraulic fluid to an hydraulic strut of a vehicle suspension and is formed in a valve block having an hydraulic delivery line between a pump delivery port and the strut via a check valve which allows flo... | 11/19/1991 |
| 4848390 | Switching valve having hydraulic self-holding properties Switching valve (1') with hydraulic self-holding properties, in which a s piston (11') having a closure piston element (15) connects or locks a pressure inlet (16') and a pressure outlet (17'), in which a pressure line (18, 19) leading to the pressure in... | 07/18/1989 |
| 4722359 | Valve arrangement for high pressure pumps A relief valve for high pressure pumps is described which is characterized by its extremely compact construction and complete reliability against leakage. The relief valve has a valve ball in the bypass path which is pressed by a high and preferably adjus... | 02/02/1988 |
| 4616672 | Pressure relief and drain valve A pressure relief and drain valve includes a poppet valve on a valve body movable in a primary valve chamber between closed and open positions and spring biased to the closed position. A secondary valve slidable on the poppet valve cooperates therewith an... | 10/14/1986 |
| 4518004 | Multifunction valve A valve combining in a single unit a multiplicity of functions including isolation, thermal and pressure relief, return check and bypass. The valve includes a pair of spool valves, one slidably positioned within the other, disposed with a bore in a housin... | 05/21/1985 |
| 4440189 | Corrosive fluid two way check relief valve A check relief valve particularly suited for use with corrosive fluids includes a body having an input port and an output port connecting a fluid passageway therebetween. A ring spring is mounted to the body along the fluid passageway. An annular sleeve i... | 04/03/1984 |
| 4246924 | Valve arrangement A valve arrangement is disclosed for controlling the supply of an operating fluid, having a casing with an inlet port, a main flow path provided with a non-return valve extending from the inlet port to an operating outlet port and a secondary flow path ex... | 01/27/1981 |
| 4237918 | Unloader and check valve A combined unloader and check valve for use with a motor driven air compressor (70) in which pressure trapped in the compressor head when the compressor is shut down is unloaded by means of an unloaded valve element (44) which opens a port (26) to unload ... | 12/09/1980 |
| 4057072 | Unloader valve A valve housing has opposed inlet and outlet ports connected by a straight through first passageway. A one-way check valve is mounted in the passageway adjacent the outlet port. A bypass port communicates with the first passageway by means of a second pas... | 11/08/1977 |
| 3971397 | Pump unloading valve device This invention relates to a pump unloader that includes two cylindrical valve members of the same diameter slidably mounted in the same bore and each biased in the same direction by its own spring. These valve members are so connected by a lost-motion con... | 07/27/1976 |
