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.
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| Number | Title | Issue Date |
| 7431321 | Trailer hitch assembly A trailer hitch assembly includes a receiver portion including a cylindrically-shaped cavity, a bushing member received within the cavity of the receiver portion, and a hitch member that includes a shaft pivotally received within the bushing member. At least a selec... | 10/07/2008 |
| 7419189 | Hydraulic fitting A high pressure hydraulic fitting (300) includes a body (302) having a central passage (322), a channel (304), a threaded section (314), and an extension section (310), wherein the threaded section (314) is disposed b... | 09/02/2008 |
| 7407165 | Composite sleeve for sealing a tubular coupling A composite sleeve seal for sealing a conduit connection including a body portion having collar sections spaced apart from one another to define gaps therebetween, and being interconnected to one another by link segments spanning the gaps. A seal portion interposes ... | 08/05/2008 |
| 7356938 | Bore gauge apparatus for use in reconditioning articulated connector An apparatus for measuring a reconditioned portion of an articulated connector engaged in a reconditioning fixture while it is still mounted to the end structure of a rail car is disclosed. The gauge is a generally cylindrical arc with an inner side and outer side. ... | 04/15/2008 |
| 7255372 | Device and method for connection with relative and controlled sealing between a pipe and a ceramic tube Relative and controlled sealing between a pipe (1) and a ceramic tube (7) utilizes a cylindrical chamber (5) that is attached in a sealed manner to the pipe (1), and to one end of the ceramic tube that is placed inside the chamber. At lea... | 08/14/2007 |
| 7237810 | Plastic pipe adhesive joint A method of joining two pipe ends, by forming male threads on an end of a first pipe with a steep taper angle, forming matching female threads on an end of a second pipe, and applying adhesive material to the threads before twisting the pipes to fully engage the mal... | 07/03/2007 |
| 7216872 | Seal for use with pipe and flange assemblies The invention relates to a seal for use with a pipe and flange assembly. The seal is intended to prevent leakage during axial movement of the pipe relative to a flange. The invention comprises a central cylindrical elastomeric member located between two circular ela... | 05/15/2007 |
| RE39584 | Pipe joint made of resin The present invention relates to a pipe joint made of resin used for laying pipes in which a high-purity liquid, ultra pure water or the like flow. According to the pipe joint of the present invention, a sealing surface pressure is generated in both axial and radial... | 04/24/2007 |
| 7195288 | Pipe coupling The invention relates to a pipe coupling comprising a socket component and an insert component which is partially insertable to securely fit into the socket component. A ring groove between the socket component and the insert component is sealed by a ring seal. The ... | 03/27/2007 |
| 7195283 | Self-centering tubular connection A tubular connection for centering a tube within a female connecting block that has a throughbore with a chamfer, wherein a transition surface is defined between the chamfer and the throughbore. The tube has an upset bead, a tapered portion narrowing from the upset ... | 03/27/2007 |
| 7187297 | Methods for sealing openings in tubulars Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular s... | 03/06/2007 |
| 7125055 | Metal ring gasket for a threaded union A metal ring gasket for a threaded union provides a high-pressure, fluid-tight, metal-to-metal seal between subcomponents of a fluid conduit. The metal ring gasket is made of carbon steel or stainless steel depending on a composition of the fluid to be conveyed thro... | 10/24/2006 |
| 7118137 | Testable pipe joint A locking ring-type pipe joint has a spigot ring provided on a first pipe section, a bell ring provided on a second pipe section, and a locking ring that may be contracted to engage the spigot ring to the bell ring. First and second circumferential grooves formed in... | 10/10/2006 |
| 7108297 | Quick connector An inner peripheral surface of a tube connecting portion of a tubular connector housing is divided into a first receiving portion on one axial side and a second receiving portion on an opposite axial side by an inwardly directed annular parting projection. A first O... | 09/19/2006 |
| 7104574 | Corrugated pipe connection joint A corrugated pipe connection joint structure and method for connecting two sections of corrugated pipe. The joint structure includes opposing bell-formed ends with reduced corrugations, a connector insert including a gasket on either end and a push-ring. The gasket(... | 09/12/2006 |
| 7096925 | Modular electric HVAC systems for vehicles Components for HVAC systems used in hybrid and fuel cell vehicles are mounted in modular configuration on a frame with air conditioning components connected to one another by metal pipes welded to the components. An alternating current motor, integral with a compres... | 08/29/2006 |
| 7059881 | Spoolable composite coiled tubing connector A connector providing methods and apparatus for connecting two lengths of composite coiled tubing whereby the connector can be spooled with the tubing onto a reel. Embodiments of the connector include female and male housings which join together to create the coiled... | 06/13/2006 |
| 7040669 | Fuel feeding pipe A fuel feeding pipe having a first feed oil pipe extending from an oil filler port, a second feed oil pipe projecting from a fuel tank, and a tightening belt for connecting and tightening these oil pipes together, comprising an outer fitting pipe provided to the fir... | 05/09/2006 |
| 6997486 | Low-permeability connecting device A low permeability coupling device for coupling a first endpiece (3) extending a tube (2) with a second endpiece (10) carried by the wall (1) of a member to which the tube (2) is connected, in which the second endpiece (10) ... | 02/14/2006 |
| 6976712 | Corrosion-resistant coupling means and methods for using same A coupling couples pipes of pipe fixes, especially polytetrafluoroethylene pipes. Methods for using the coupling are also provided. ... | 12/20/2005 |
| 6923273 | Well system The drilling system includes a work string supporting a bottom hole assembly. The work string including lengths of pipe having a non-metallic portion. The work string preferably includes a composite coiled tubing having a fluid impermeable liner, multiple load carry... | 08/02/2005 |
| 6907652 | Pipe connecting method A method of connecting a first pipe to a second pipe having an end part fitting into an end part of the first pipe, comprising arranging the end part of the second pipe within the end part of the first pipe, arranging a sleeve of a deformable material between said e... | 06/21/2005 |
| 6890005 | Self-centering tubular connection A tubular connection for centering a tube within a female connecting block that has a throughbore with a chamfer, wherein a transition surface is defined between the chamfer and the throughbore. The tube has an upset bead, a tapered portion narrowing from the upset ... | 05/10/2005 |
| 6869107 | Air conditioning block fitting with two surface sealing A block fitting for coupling tubing segments having a pair of seals, one of the seals being a radial seal and the other seal being an axial seal, wherein the fitting militates against leakage during operation of an air conditioning system upon failure of one of the ... | 03/22/2005 |
| 6866308 | Interactive sealing system for arcuate ducts including seal compressed and actuated by adjacent expanding seal A system for sealing one end of a first air duct with an adjacent overlapping end of a second air duct incorporates multiple sealing components. One of the sealing components interacts and activates another of the sealing components. One of the sealing components me... | 03/15/2005 |
| 6848725 | Thermal expansion connection for rigid pipes A thermal expansion connection for rigid pipes in low-pressure applications subject to thermal expansion and shrinkage. The connection is formed between the distal end of a first rigid pipe received within the proximal end of a second rigid pipe. At least one seal i... | 02/01/2005 |
| 6746056 | Fluid coupling device A fluid coupling device employs a male spherical member with a fluid receiving bore and a female housing. The spherical member abuts two axially spaced Teflon ring seats between the member and the housing in the housing chamber. The ring seats reduce friction betwee... | 06/08/2004 |
| 6705647 | Fluid coupling device A fluid coupling device employs a male spherical member with a fluid receiving bore and a female housing. The spherical member abuts two axially spaced Teflon ring seats between the member and the housing in the housing chamber. The ring seats reduce friction betwee... | 03/16/2004 |
| 6695353 | Sealed fitting for use with corrugated tubing A fitting for corrugated tubing has a body with an internal conduit therethrough and a centerline. The body further includes a distal end located on a first end of the body, the distal end having a first outer diameter and a cross sectional thickness. A c... | 02/24/2004 |
| 6676167 | Air conditioning block fitting with two surface sealing A block fitting for coupling tubing segments having a pair of seals, one of the seals being a radial seal and the other seal being an axial seal, wherein the fitting militates against leakage during operation of the air conditioning system upon failure of... | 01/13/2004 |
| 6598905 | Hose coupling A coupling and methods for assembling and using the coupling for connecting a hose with a tube, pipe or other hose in an automotive refrigerant system. The coupling comprises a connector member connected to a tube, pipe or hose, the connector member havin... | 07/29/2003 |
| 6539715 | Turbocharger swivel connector A 90° swivel connector capable of rotating 360° has threads on one end that screw into a threaded hole in a boss on a compressor portion of a turbocharger and has barbs on the other end of the swivel connector for receiving and retaining a hose. The 360... | 04/01/2003 |
| 6517118 | Hose device for fuel transportation A hose device for fuel transportation having superior methanol permeation resistance, methanol resistance, non-extractability with methanol, water resistance, heat resistance, pressure resistance, etc., when methanol is used as a fuel. The hose device for... | 02/11/2003 |
| 6488316 | Flexible metal hose termination fitting with adapter for termination plate A sealed coupling system for flexible hose, such as corrugated hose, includes a termination fitting that mounts the sealed system to a static structure, such as a wall or the like. The system uses threaded connections to fix the hose to the fitting and to... | 12/03/2002 |
| 6443502 | Leakage restriction device for refrigeration cycle A leakage restriction device for a refrigeration cycle of a vehicle air conditioner in which refrigerant flows has first and second rubber gaskets. The first and second gaskets are disposed between a pipe and a pipe joint of the refrigeration cycle for re... | 09/03/2002 |
| 6439478 | Adapter for upright sprinkler with rotating head An adapter for rotatably connecting a sprinkler head to a water-transporting standpipe having a cylindrical upper end. The adapter includes three parts: a cup-like base adapted to rest on the upper end of the standpipe in sealed fashion, a male stem adapt... | 08/27/2002 |
| 6416087 | Connection piece with sealing bead The invention relates to a connecting branch (10) comprising a replaceable insert part (20) which is placed in a chamber (22) in a sealed manner. Said chamber is open in the front and is located inside the connecting branch (10). A ring-shaped sealing sur... | 07/09/2002 |
| 6409175 | Expandable joint connector Methods and apparatus are provided for obtaining a secure mechanical connection and a pressure-tight seal in the overlapping area of two telescoping tubular bodies. The two bodies, including the overlapping area, are radially expanded to increase the insi... | 06/25/2002 |
| 6371528 | Fluid pressure device pipe joint The present invention provides a pipe joint including: a socket mounted to a fluid pressure device; a joint main body to which a tube is connected; a stud having a base end portion connected to the joint main body and a tip end portion that can be connect... | 04/16/2002 |
| 6367844 | Attachment fitting for pressure vessel This invention provides sealed access to the interior of a pressure vessel and consists of a tube, a collar, redundant seals, and a port. The port allows the seals to be pressurized and seated before the pressure vessel becomes pressurized.... | 04/09/2002 |
