Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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 |
| 7401761 | Compressed gas cylinder safety device An improved apparatus and method for preventing accidental disconnection of a valve fitting from a compressed gas cylinder (tank) is provided. A valve safety device preferably includes a valve stem having a first threaded section. The first threaded section is prefe... | 07/22/2008 |
| 7341240 | Valve A drain valve to be used with numerous drain applications, such as draining fluid from an engine, includes in an exemplary embodiment a valve body, a first and second o-ring and a valve sleeve. The drain valve eliminates the need for a tool, such as a wrench, to dra... | 03/11/2008 |
| 7178785 | Stem arrangement for pivot actuated sleeve valve A valve assembly has a valve body and a fluid passage through the valve body with an inlet end and an outlet end. A valve seat is defined within the fluid passage. A sleeve is axially slidable within the fluid passage and has an upstream end, a downstream end, and a... | 02/20/2007 |
| 7168683 | Oil drain valve A drain valve to be used with numerous drain applications, such as draining fluid from an engine, includes in an exemplary embodiment a valve body, an o-ring and a cap. In another exemplary embodiment, the drain valve includes a valve body, an o-ring, a cap retainer... | 01/30/2007 |
| 7114703 | Valve A drain valve to be used with numerous drain applications, such as draining fluid from an engine, includes in an exemplary embodiment a valve body, a first and second o-ring and a valve sleeve. The drain valve eliminates the need for a tool, such as a wrench, to dra... | 10/03/2006 |
| 7111637 | Enclosure system for pressure relief device An enclosure for a pressure relief device, particularly pressure relief devices mounted on electrical equipment housings, is pre-assembled together with the pressure relief device. The enclosure, which provides for temporarily confining and directing fluids discharg... | 09/26/2006 |
| 7066447 | Sleeve valve with adjustable flow characteristics A sleeve valve has a valve body and a flow passage through the valve body. The flow passage has a longitudinal axis, a valve plug positioned therein, and a slidable sleeve received therein. The sleeve is movable in an axial direction between an opened and a closed p... | 06/27/2006 |
| 7032876 | Fluid valve A valve for controlling fluid flow. The valve include a support element providing a flow path, at least a portion of the flow path extending along an axis of flow through the valve. A flexible element is compressible against the support element to interrupt the flow... | 04/25/2006 |
| 6953184 | Rotary damper assembly An apparatus for regulating flow of fluid received from a fluid source has an inner cylinder with inlet and outlet apertures, and an outer cylinder that also has inlet and outlet apertures. The inner cylinder is nested within the outer cylinder and rotatable with re... | 10/11/2005 |
| 6929245 | Stem to sleeve connection for pivot actuated sleeve valve A valve assembly has a valve body and a fluid passage through the valve body with an inlet end and an outlet end. A valve seat is defined within the fluid passage. A sleeve is axially slidable within the fluid passage and has an upstream end, a downstream end, and a... | 08/16/2005 |
| 6926251 | Free-floating diaphragm flow control valve A free floating diaphragm flow control valve includes concentric inner and outer bodies, where a partition plate divides the inner body into two equal inlet and outlet chambers. A cylindrical cavity, concentric with the inner and outer cylindrical bodies, provides s... | 08/09/2005 |
| 6913245 | In-line shut-off valve and method of assembling same An in-line water shut-off valve is provided including a tailpipe which is attached to a main water line in order to form a “T” or 90° “L” which protrudes from the wall of the building and upon which is attached a cap which is threadably and rotatably attach... | 07/05/2005 |
| 6908069 | Fluid valve apparatus A fluid valve includes a base body having a fluid intake, a fluid outlet and a valve accommodation chamber formed between the fluid intake and fluid outlet, a cylindrical valve accommodated movably in the valve accommodation chamber, and a driving portion for moving... | 06/21/2005 |
| 6899318 | Wave seal to resist extrusion during equalization The present invention provides for dynamic sealing in a flow control device. In an embodiment, the flow control device comprises a closure sleeve adapted to slide over the tubing hole. The closure sleeve has a front edge having a wave-like surface. One or more seals... | 05/31/2005 |
| 6880638 | Device for an opening in an outer sleeve of a sleeve valve and a method for the assembly of a sleeve valve A sleeve valve for fluid flow between a hydrocarbon reservoir and a well including a fixed outer sleeve with openings and a movable inner sleeve with openings which can be aligned and misaligned with the outer sleeve openings in order to admit or shut off the fluid ... | 04/19/2005 |
| 6874761 | Pivot actuated sleeve valve A valve assembly has a valve body and a fluid passage through the valve body with an inlet end and an outlet end. A valve seat is defined within the fluid passage. A sleeve is axially slidable within the fluid passage and has an upstream end, a downstream end, and a... | 04/05/2005 |
| 6869063 | Sleeve valve and method for its assembly A sleeve valve device for fluid flow between a hydrocarbon reservoir and a well in the hydrocarbon reservoir comprises a fixed outer sleeve (1) and an inner sleeve (2) which is rotatable in order to bring apertures (3, 4) in the outer sleeve and... | 03/22/2005 |
| 6824120 | Flow amount control device In a flow amount control device, column shaped valve element is slidably disposed in a cylindrical inner circumferential wall of a valve body. The valve element is provided along an outer circumference thereof with two ring shaped grooves. Fuel stored in the ring sh... | 11/30/2004 |
| 6817416 | Flow control device A flow control device comprises an outer sleeve having an outer sleeve wall and at least one aperture through the outer sleeve wall; a inner sleeve having an inner sleeve wall and at least one aperture through the inner sleeve wall; and means for providing relative ... | 11/16/2004 |
| 6742681 | Structure of a water outlet valve for water bag mouthpieces A water outlet valve structure for a water bag mouthpiece, which includes a mouthpiece, a threaded base disposed on one end of said mouthpiece, a blocking member disposed at one end of said threaded base, and a sleeve base disposed at one end of said blocking member... | 06/01/2004 |
| 6733000 | Pivot actuated sleeve valve A valve assembly has a valve body and a fluid passage through the valve body with an inlet end and an outlet end. A valve seat is defined within the fluid passage. A sleeve is axially slidable within the fluid passage and has an upstream end, a downstream end, and a... | 05/11/2004 |
| 6722439 | Multi-positioned sliding sleeve valve A downhole choke in the form of a sliding sleeve valve operable in a plurality of positions including fully open, fully closed, and positions in between, is disclosed. It features a hydraulic control system that, in one embodiment, provides the motive force to move ... | 04/20/2004 |
| 6719273 | Water outlet valve for water bag mouthpiece An improved water outlet valve structure of a water bag mouthpiece, which includes: a nozzle which is composed of a supporting frame and a soft suction portion wrapping around the supporting frame; a threaded base which has a base, a threaded connecting section exte... | 04/13/2004 |
| 6637723 | Fluid valve A valve for controlling fluid flow. The valve include a support element providing a flow path, at least a portion of the flow path extending along an axis of flow through the valve. A flexible element is compressible against the support element to interru... | 10/28/2003 |
| 6622988 | Mouthpiece for drinking A mouthpiece for a hydration system designed for drinking liquids from that system. The mouthpiece comprises a body having an internal conduit passing through it, the internal conduit having a broad portion provided with a broad opening and a narrow porti... | 09/23/2003 |
| 6585001 | Flow through ring valve for plastic extruding systems A three piece, sliding ring valve for use in a plasticating screw and barrel arrangement has an extended life. The sliding ring has apertures for passing molten resin therethrough. The sliding ring also has annular contact surfaces for spreading the force... | 07/01/2003 |
| 6533244 | Backwash flow control valve Apparatus for treating water utilizes a single flow control valve that has only one moving part to divert treated water from several water treatment units to backwash another water treatment unit.... | 03/18/2003 |
| 6523568 | Combination air vent/probe port and method of constructing same According to one embodiment of the invention, a combination air vent/probe port includes an outer body adapted to couple to a conduit, the outer body formed with a longitudinal bore defining an inner wall, the longitudinal bore having a seating surface. T... | 02/25/2003 |
| 6361018 | Coaxial valve with electric actuating drive A coaxial valve includes an actuating drive, a valve housing (11), a valve sleeve (12) that is longitudinally slidable in the valve housing (11) between open and closed positions, and a closing body (13) arranged coaxially at one end of the valve sleeve (... | 03/26/2002 |
| 6328277 | Automatic valve A compact automatic valve has a cylindrical body with a sleeve inserted to move in the cylindrical body in the axial direction. A first diaphragm, having an annular joint section and an annular protrusion arranged in the outer circumferential section, is ... | 12/11/2001 |
| 6325150 | Sliding sleeve with sleeve protection A flow rate control device (18) placed at the bottom of an oil well in production comprises holes (24) formed in the production tubing (16), a closure sleeve (26) suitable for sliding over the holes (24) for controlling the flow rate, and a protective sle... | 12/04/2001 |
| 6230607 | Adjusting device for a pneumatic drive, particularly for a medical or dental instrument An adjusting device for a pneumatic drive, particularly a pneumatic drive of a medical or dental instrument, for example, a handpiece or angle piece, which delivers its energy by vibration and in which the vibrations are produced by a pneumatic drive, whe... | 05/15/2001 |
| 6199823 | Solenoid valve with an external sleeve armature A solenoid actuated valve includes a valve body and a sleeve armature slidably mounted on the valve body for movement between a flow preventing position and positions away from the flow preventing position. In one embodiment, the sleeve armature and the v... | 03/13/2001 |
| 6178988 | Hydrant design A hydrant valve assembly including a spool member having at least one spool seal which is at times under extremely high pressure tending to cause the seal to be displaced from an associated recess, the spool member forming venting passages in the seal rec... | 01/30/2001 |
| 5979492 | Fluid level regulating sleeve valve A Sleeve Valve for regulating the water level in ponds, lagoons and other wetlands which includes an outer tubular section of plastic pipe with a plurality of vertically spaced openings and an inner tubular section of plastic pipe that is disposed telesco... | 11/09/1999 |
| 5913664 | Safety relief valve assembly for a fluid displacement apparatus A safety relief valve assembly for use in a fluid displacement apparatus of an automotive air conditioning system includes a valve mechanism which releases gas when the pressure in the fluid displacement apparatus increases above a predetermined pressure ... | 06/22/1999 |
| 5810089 | Portable firefighting apparatus with integral control valve-handle A combination carrying handle and control valve for firefighting apparatus suspends a portable reservoir. A handle is formed by a tubular wall having an inlet end and an outlet end and forming a flow passage between the ends; and a coupling is fastened to... | 09/22/1998 |
| 5782455 | Valve A valve has an elongated body open-ended, with a bore with a center line extending from one end of the body to the other. The bore is interrupted by a fluid tight partition, on both sides of which, ports extend through the wall of the body. An elliptical ... | 07/21/1998 |
| 5749561 | Plug assembly A plug assembly (2) which can be used in a drain, sink or bath (5). The plug (2) is of the pop up type being spring biassed into an open position. The plug (2) includes inter-engaging means for engagement of the plug (2) with a waste pipe (3) and means to... | 05/12/1998 |
| 5554124 | Universal gasket for laparoscopic cannula A laparoscopic cannula gasket apparatus for sealing around an instrument within a cannula includes a first member having an internal passageway, an elastic sleeve member within the passageway, a structure for securing a first segment of the sleeve member ... | 09/10/1996 |
