Bizarre Patents
Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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 |
| 7669858 | Mechanical seal support systems A mechanical seal support system may facilitate feeding barrier fluid to a mechanical seal. A predetermined difference in pressure between the barrier fluid at a position before and after passage through the seal is detected. The flow of barrier fluid to the seal ma... | 03/02/2010 |
| 7372933 | Radioactive-material container, metal gasket for sealing the radioactive-material container, and method of manufacturing the metal gasket A radioactive-material container includes a container body that shields nuclear radiation, which includes a cavity that stores a basket containing a recycle fuel assembly, a lid that covers the cavity, and a metal gasket that includes a sealing area that makes a phy... | 05/13/2008 |
| 7201379 | Seal assembly, cartridge, and method A seal assembly and cartridge for sealing a space between a rotating member and a stationary member in which a sleeve extends around the rotating member and with the inner surface of the sleeve being spaced from the outer surface of the rotating member to form a gap... | 04/10/2007 |
| 7185893 | Metallic flat seal and method for the production thereof The present invention concerns a metallic flat gasket with at least one sealing layer with at least one port, with a sensor layer corresponding to the ports being deposited on at least one surface of the sealing layer. This sensor layer consists of a compression pro... | 03/06/2007 |
| 7152571 | Lubrication system having a gasket with integrated lubrication channel The present invention is directed to a lubrication system having a gasket with integrated lubrication channel for providing lubrication to the surface of an engine part. Preferably, the gasket is a multilayer metal gasket comprised of an upper layer, a bottom layer,... | 12/26/2006 |
| 7108418 | Bearing seal assembly for concrete auger mixer and method for using same An auger mixer for mixing a concrete mix includes an elongated mixer housing having a mixing chamber for mixing the concrete mix therein. A mixing auger is rotatably mounted within the mixing chamber. A bearing assembly mounts one end of the auger shaft to the mixer... | 09/19/2006 |
| 7051814 | Subsea coiled tubing injector with pressure compensated roller assembly A tubing injector (10) includes a traction device (12) having opposed grippers (14) laterally moveable so as to move a respective chain link member (16) of an endless loop chain into gripping engagement with the coiled tubing. A drive mot... | 05/30/2006 |
| 7036824 | Device for the float mounting a sealed housing A device for float mounting a sealed housing around a rotating, deflecting shaft. A sealed housing is connected to a static part in such a way that it can yield radially as well as rotate around a shaft axis at least to a small extent. ... | 05/02/2006 |
| 7004472 | Cylinder head gasket A metallic cylinder head gasket for an internal combustion engine having at least one combustion chamber. The gasket includes at least one sheet-metal layer having at least one opening corresponding to the at least one combustion chamber of the internal combustion e... | 02/28/2006 |
| 7004471 | Radial lip seal A radial lip seal including an annular support with a radially extending portion having an inner periphery. An annular seal lip formed of elastomeric material such as polytetrafluoroethylene is connected to the inner periphery. The lip has an inner side adapted to s... | 02/28/2006 |
| 6964304 | Technique for maintaining pressure integrity in a submersible system A technique for maintaining pressure integrity within a submersible system. The system utilizes a pressure housing with an internal component, such as a valve. The internal component is actuated by an external actuator via an actuator stem. A seal region is position... | 11/15/2005 |
| 6935184 | Pressure transducer capable of detecting internal leakage of external media A pressure transducer capable of detecting leakage of media into the pressure transducer. The pressure transducer comprises a spacer having first and second ends. A first header assembly containing a first pressure sensor for measuring a pressure of the media, is se... | 08/30/2005 |
| 6932352 | Gasket embedding an ion sensor A gasket embedding an ion sensor 5 used for sealing a cylinder head to a cylinder block of an engine which is intervened under pressure between the cylinder head and the cylinder block, the gasket having a detection function of the condition in a combustion c... | 08/23/2005 |
| 6817228 | Method and apparatus for detecting seal failure Pumps and valves with movable parts, such as a plunger, typically have seals around the part. The seals may isolate one chamber from another to prevent leakage across the seals. The pressure in one chamber may be different from the pressure in another adjacent chamb... | 11/16/2004 |
| 6626436 | Monitoring seal system A monitoring seal system comprises a seal housing, a seal assembly, a temperature sensor and a controller. The seal assembly sealingly engages a rotary shaft to prevent fluid leakage between the shaft and the housing. The seal assembly has at least one se... | 09/30/2003 |
| 6589391 | Top separator with intraseal for digester vessel in a pulp or fiber processing system A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring moun... | 07/08/2003 |
| 6554016 | Rotating blowout preventer with independent cooling circuits and thrust bearing A rotary blowout preventer has a first and a second fluid circuit. Each of the fluid circuits are defined into and out of a stationary body and between the stationary body, a rotating body, and two seals. The first fluid circuit is physically independent ... | 04/29/2003 |
| 6504888 | Apparatus and methods of flow measurement for a boiling water reactor internal pump A reactor pressure vessel (RPV) for a nuclear reactor that permits measurement of the flow through each reactor internal pump (RIP) is described. The reactor pressure vessel also includes at least one reactor internal pump that includes an impeller and a ... | 01/07/2003 |
| 6349947 | High pressure chamber door seal with leak detection system A high pressure chamber opening is equipped with a cylindrical element that features a circumferential flange. The circumferential flange features concentrically positioned primary and secondary O-ring seals that surround the chamber opening. A door is cl... | 02/26/2002 |
| 6345954 | Dry gas seal contamination prevention system A seal gas pressure booster system for use with a gas compressor, particularly of the type used for boosting pressure in gas transmission, process or utility industries and which contains pressure about the shaft/casing interface with the use of dry gas s... | 02/12/2002 |
| 6325377 | Rotary shaft monitoring seal system A rotary shaft monitoring seal system includes a seal housing; a seal assembly in the housing for sealingly engaging a rotary shaft to prevent fluid leakage between the shaft and the housing; a monitoring port in the housing; and a detector assembly mount... | 12/04/2001 |
| 6299216 | Joints A joint comprising a main seal, a secondary seal and an external pressure test port providing access to a cavity between the main seal and the secondary seal wherein the integrity of the main seal can be tested in its in-service direction by applying pres... | 10/09/2001 |
| 6210103 | Rotary seal and/or bearing For an impeller pump, the seal/bearing unit has two rotor-stator pairs of tapered sleeves arranged back-to-back. The sleeves have a spiral groove, and convey barrier-liquid from an entry-mouth in an entry-chamber to an exit-mouth in an exit-chamber. Havin... | 04/03/2001 |
| 6082737 | Rotary shaft monitoring seal system A rotary shaft monitoring seal system includes a seal housing; a seal assembly in the housing for sealingly engaging a rotary shaft to prevent fluid leakage between the shaft and the housing; a monitoring port in the housing; and a detector assembly mount... | 07/04/2000 |
| 6039319 | Hygienic fitting with thermal expansion area for gasket A sealing gasket for insertion into a circumferentially continuous groove of a flange joint for joining axially aligned tube ends, the flange joint being of the type having axially opposed flanges at the tube ends to form a groove there between when the j... | 03/21/2000 |
| 5939688 | Fluid responsive switch pivot arm seal A fluid responsive switch having a pivot arm for monitoring fluid flowing in a conduit or the level of liquid in a container with an improved resilient seal. The pivot arm, in the fluid responsive switch, is mounted in a housing by a pivot pin and a resil... | 08/17/1999 |
| 5820129 | Mechanical split double seals Split mechanical seal assemblies which include a pressurized fluid barrier and multiple concentric and axially aligned stationary seal rings. The stationary seal rings are in sealing relation with a rotary seal ring at their respective seal faces, and wit... | 10/13/1998 |
| 5784925 | Vacuum compatible linear motion device A vacuum compatible linear motion device having a fluid bearing is contained within a vacuum chamber having a working pressure of significantly less than one atmosphere. The fluid bearing is contained within a vacuum enclosure within the vacuum chamber an... | 07/28/1998 |
| 5772216 | Sealing system The sealing system seals a moving element in a valve. The sealing system includes an internal seal between the valve body and moving element proximate the lading and an external seal between the valve body and moving element proximate the free end of the ... | 06/30/1998 |
| 5769427 | Dual seal with clean barrier fluid and dynamic pressure control A seal arrangement for a stuffing box, the stuffing box having an outboard seal an inboard seal exposed to process fluid, and a volume pressurized with barrier fluid in which the inboard seal and the outboard seal are disposed, has a container divided int... | 06/23/1998 |
| 5755372 | Self monitoring oil pump seal A seal system for an oil well head, wherein the shaft rotates about its axis to drive a progressive cavity type pump. Primary and secondary polytetrafluoroethylene seals surround a sleeve that encircles the shaft. Pressure detectors connect to the space b... | 05/26/1998 |
| 5538080 | Self aligning stuffing box for pumpjack units A self aligning stuffing box for a pumpjack unit of the type having a polished rod reciprocatingly extending therethrough and downhole to a pump located at the lower end of a borehole. The stuffing box has a main body that terminates in a tubing adaptor a... | 07/23/1996 |
| 5412977 | Turbo machine with an axial dry gas seal In a turbo machine, for example, a turbo compressor, the rotor shaft extends through and is sealed relative a housing via dry gas seals in which a seal clearance is achieved between a rotating, sealing body and a non-rotating sliding body in which the inn... | 05/09/1995 |
| 5348456 | Helical dry screw expander with sealing gas to the shaft seal system An improved helical dry screw expander particularly suited for cryogenic service and its use in a cryogenic rectification system. The improved helical dry screw expander is particularly advantageous in a cryogenic waste expansion cycle particularly for ni... | 09/20/1994 |
| 5152536 | Fluid seal with a maintained gap of seal faces A device for a wear free sealing of fluids from within to the outside of the confined space of a rotating machine. The sealing effect occurs between coplanar faces of a rotating ring and a power assisted stationary ring which maintains a suitable distance... | 10/06/1992 |
| 5085293 | Apparatus for automatically sealing the space between an elevator shaft and an elevator car A sealing apparatus has inflatable hallow body portions extending around a car opening to close off the space between an elevator shaft wall and the car opening of an elevator car in a draftsproof and weatherproof manner when stopping at a floor. After th... | 02/04/1992 |
| 5074568 | Shaft seal The shaft seal between a fixed housing wall (2) and a revolving shaft (1) consists of a collar (6) fixedly connected to the shaft (1), respectively one leg of the U-shaped sealing rings (69, 71) pressing against this collar. The cavities (14, 15) of the s... | 12/24/1991 |
| 5048847 | Stuffing box for sealing large-scale deflection shafts The invention relates to a stuffing box for the sealed passage of a shaft with undesirable deflection through connecting branch, provided with a casing, a stuffing box sland containing packing rings, as well as with a tubular spring compensator, one end o... | 09/17/1991 |
| 4917190 | Oil well blowout containment system An oil well blowout containment system which surrounds the polished rod is provided that will capture the oil leaking and blowing past the stuffing box packing gland. In addition, a vessel which is part of the oil well blowout containment system and is lo... | 04/17/1990 |
| 4850389 | Moisture sealing system for aircraft servicing pit A subsurface pit for servicing aircraft on the ground and having walls with an opening into which a refueling conduit extends is provided with both a ground moisture seal and a pressure seal located about the moisture seal. Together the ground moisture se... | 07/25/1989 |
