Did You Know...
...In 1790, the cost to obtain a patent was between $4 and $5.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7293576 | Single-piece manifold with reduced pressure arrangement A single-piece manifold comprising a body having an inlet in communication with a water supply and an outlet that communicates with a sprinkler system having a main conduit adapted for fluid flow between the inlet and the outlet is disclosed. The body includes a mai... | 11/13/2007 |
| 7175612 | Suction limiting device with variable control A suction limiting device with variable control for use in a surgical system includes a main vent body having a fluid carrying bore extending therethrough and a variable vent mechanism having a main vent opening in selective fluid communication with the fluid carryi... | 02/13/2007 |
| 7134152 | Adaptable, low cost air gap and flow control A kitchen sink installation includes a plurality of adjacent kitchen sinks having drain tailpieces, a manifold pipe mounted substantially horizontally under the sinks and having a length and a plurality of discrete openings along its length, each of the openings fac... | 11/14/2006 |
| 5639063 | Shut-off valve for installation immediatley downstream from a defective valve mounted into the compression-connection type of outlet of the defective valve A trouble-shooting shut-off valve includes an inlet-tail-tube mountable directly into a compression-fitting outlet socket of a defective shut-off valve, thus positioning the trouble-shooting valve immediately downstream from the defective valve in line in... | 06/17/1997 |
| 5365969 | Float with skirt to prevent leakage due to oversudsing An improved float to prevent over-filling of a dishwashing machine including a cylindrical main float body, a skirt attached to the main float body and extending outwardly and downwardly therefrom, and a float stem. The main float body includes a lower po... | 11/22/1994 |
| 5039405 | Disconnector for the protection of the watermain, with particular reference to medical plants The present invention relates to a back-flow prevention device for use with a water supply for supplying water to dental instruments within a dental clinic for preventing bacteria contamination of a water source feeding water supply. The device provides n... | 08/13/1991 |
| 4667925 | Quick coupling hose connection with double acting backflow preventing valve An instant coupling comprises a male element (9) and a female element (1) which comprises a chamber (4) containing a valve (5) provided with a first sealing surface (10) which, when pressurized water is present, rests against a seat (12) and shuts-off wat... | 05/26/1987 |
| 4640302 | Double disc gate valve An improved double disc gate valve having sealing rings which engage the internal discs of the reciprocating gate and in which one of its discs and its sealing ring can be replaced with only partial disassembly of the valve.... | 02/03/1987 |
| 4558716 | Valve body for multiple valve insert packages A choke valve apparatus is accommodated to different conditions of fluid flow (to or from a well, for example) by providing multiple flow control packages each having two flow control units, each package being readily connectible in the same valve body.... | 12/17/1985 |
| 4545735 | Diaphragm pump having a valve sheet with inlet and outlet flaps and having antisiphoning capability during pump shutdown The pump has a pumping chamber with a deflectable diaphragm member and fluid inlet and outlet passages. A deflectable valve flap is disposed across the fluid inlet passage and another flexible valve flap is disposed across the fluid outlet passage. Moveme... | 10/08/1985 |
| 4480656 | Plumbing fixture This invention is directed to a plumbing fixture to lessen and to prevent the flow of a liquid, from a source of liquid, flowing to an apparatus such as a washing machine or a dishwasher. More, particularly, this plumbing fixture is directed to lessening ... | 11/06/1984 |
| 4321219 | Steam cleaner Steam cleaning equipment comprising a water reservoir incorporating steam and water inlet ports and steam and water outlet ports arranged to supply steam at a controlled pressure and water in predetermined quantities to a hand piece where they are mixed i... | 03/23/1982 |
| 4286616 | Non-freeze wall hydrant In a wall hydrant, on the inner and outer ends of a wall-penetrating conduit, an inlet connection casting and a discharge casting; a valving member movable axially in an inlet valving bore relative to a seat; a lateral conduit outlet from a discharge cast... | 09/01/1981 |
| 4090527 | Backflow preventer and relief valve assembly A backflow prevention assembly designed for connection between a main supply line and a service pipe in water supply service, comprising two check valves in series and a relief valve for draining the chamber between the two check valves under certain oper... | 05/23/1978 |
| 4044787 | Backflow preventer and relief valve assembly A backflow prevention assembly designed for connection between a main supply line and a service pipe in water supply service, comprising two check valves in series and a relief valve for draining the chamber between the two check valves under certain oper... | 08/30/1977 |
| 3996962 | Backflow preventer and relief valve assembly A backflow prevention assembly designed for connection between a main supply line and a service pipe in water supply service, comprising two check valves in series and a relief valve for draining the chamber between the two check valves under certain oper... | 12/14/1976 |
| 3930516 | Ballcock assembly A ballcock assembly in which a sheath extends upwardly through the fluid within a reservoir tank to support a valve mechanism above the normal level to which fluid will rise in the reservoir tank. An inlet tube which connects a fluid supply line to the va... | 01/06/1976 |
