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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7350832 | Self-aligning, rain-tight conduit coupling/connector assembly By providing two mating components to which any desired threaded conduits are easily, securely affixed, with the mating components being constructed for interengagement with each other in a telescoping self aligning construction, an easily used, inexpensively produc... | 04/01/2008 |
| 7350833 | Self-aligning aseptic flanged joint A flanged joint system connects two pipes disposed along a common axis. A flange having a mating surface terminates each pipe. A gasket assembly comprising an outer annular, substantially rigid retaining ring and a peripheral alignment rim, an inner deformable annul... | 04/01/2008 |
| 7331615 | Pipe union with extension A pipe union with extension for interconnecting a first length and a second length of coaxial pipe may include a first annular pipe member attachable to the first length of pipe. The first annular pipe member may incorporate a circumferential flange having a shoulde... | 02/19/2008 |
| 7322615 | Adjustable plumbing fitting An adjustable plumbing fitting is adapted to adjust a length of connection between supply and inlet pipes, and includes a sleeve member, a collar member, and a sealing member. The sleeve member includes an annular section sleeved on and threadedly engaged with the i... | 01/29/2008 |
| 7300075 | Sealing assembly Sealing assembly, for example forming part of a flowmeter. The sealing assembly comprises a first metal body with a mating surface in which a centering chamber with a flat bottom and an upright wall are provided, and a second metal body with a mating surface provide... | 11/27/2007 |
| 7207220 | Fluid coupling for a chromatograph A fluid coupling comprises a compliant material, a seal gland having at least one projection configured to contact the compliant material, and a cover plate configured to compress the compliant material into the gland, thus forcing the compliant material against the... | 04/24/2007 |
| 7134698 | Sealing device for a high-pressure sealing of line junctions A sealing device (1) for a high-pressure sealing of line junctions comprises a cutting edge (2) and a protective edge (3). The cutting edge (2) permits a sealing of the line junction by means of plastic deformation. The protective edge ( | 11/14/2006 |
| 7128038 | Intake device for an internal combustion engine An intake device for an internal combustion engine includes a throttle body (1) that forms an intake passage (1a). A throttle valve (2) is arranged within the intake passage. A pipe member (26) is connected to the throttle body, wh... | 10/31/2006 |
| 7029037 | Apparatus for connecting and sealing duct sections An apparatus (10) for connecting and sealing duct sections is adapted for connecting and sealing round ducts (100), round oval ducts (200), and other commonly used ducts. The apparatus includes first and second connectors. Each connector include... | 04/18/2006 |
| 6938933 | Corrugated plastic pipe sections having flanged ends and structurally tight joints thereof Rigid corrugated plastic pipe sections are provided with a flange radially extending from at least one end of the pipe length, which allows structural and water tight joints between connecting flanged pipes and fittings to be formed in an assembly including a periph... | 09/06/2005 |
| 6916048 | Device for fluid-tight connection of a fitting to an internal combustion engine fuel injector The fitting has a high-pressure fuel supply conduit, and the injector has a hollow body having a threaded seat engaged by a threaded portion of the fitting. The fitting has a shoulder located between the threaded portion and another portion of the fitting, and the h... | 07/12/2005 |
| 6565124 | Pipe joint and a gasket therefor A gasket 17 for a demountable pipe joint 1 of an hygienic food processing system, the gasket 17 comprising a first part 19 defining a surface 27 for providing a smooth transition from a first pipe end 3 to a second pipe end 5 at a pipe joint 1, the sides ... | 05/20/2003 |
| 6540264 | Quick connector for piping In a quick connector for piping 10 for detachably connecting a male member 12 to a female member 11, an O-ring 15 is interposed between the female member 11 and the male member 12 so as to form a seal therebetween, and the O-ring 15 is subjected to a low-... | 04/01/2003 |
| 6267414 | Pipe joint and a gasket therefor A gasket for a demountable joint of an hygienic food processing system, the gasket comprising a surface for providing a smooth transition from a first joint part to a second joint part at a joint. The sides of a preferred embodiment gasket each define a p... | 07/31/2001 |
| 6176525 | Thermoplastic liner and a flange on a tubular member lined with a thermoplastic liner and a flange lined tubular member A method for installing a flange on the end of a tubular member lined with a thermoplastic liner is provided. The flange is formed with a groove having extrusion openings extending from the front to the rear surface of the flange, the groove for receiving... | 01/23/2001 |
| 6173968 | Sealing ring assembly A sealing ring assembly for sealing a joint between two members (20, 22). An annular sealing ring 28 abuts an annular backup ring (38, 44) of substantially the same diameter. The annular backup ring is split to permit radial expansion and has a greater th... | 01/16/2001 |
| 5947533 | Gasket assembly with elastomer expansion area A pipe joint assembly comprises a pair of cylindrical pipe ends of the same internal diameter in axially contiguous aligned relationship. Connecting flanges extend radially outward of each of the pipe end and have opposed faces defining a circumferentiall... | 09/07/1999 |
| 5904382 | Aseptic seal An aseptic or sanitary pipe or tube fitting including a first ferrule having an outer radial surface, a counterbore and an inner annular surface, and a second ferrule having an inner radial surface, an outer radial surface and an outer annular surface mat... | 05/18/1999 |
| 5876070 | Pipe flange connection for pressure retaining, abrasive/corrosive service The present invention involves a pipe flange internally fitted with a lining. The pipe flange has a face with an annular groove extending outward from the inside surface along at least a portion of the face. The groove may be tapered becoming deeper as it... | 03/02/1999 |
| 5855397 | High-pressure sealable connector for a pressure sensor An improved sealable connector has a geometry which effects reliable sealing upon assembly. The connector is useful, for example, for connecting a pressure sensor to a fuel pump accumulator in a fuel injection system. The connector includes a male member,... | 01/05/1999 |
| 5839765 | Metal seal ring for tubular joint A tubular joint has a pair of tubular members (10, 12) with end hubs (14, 16) in opposed relation and secured by a clamp (22). A primary seal ring (40) has external tapered sealing surfaces (42, 44) engaging internal tapered sealing surfaces (28, 30) on t... | 11/24/1998 |
| 5553902 | Leak-proof coupling A coupling is provided which is particularly suitable for refrigeration service and air conditioning systems. The coupling includes a body portion, an adapter portion, a collar and a gasket. The body and adapter portions are connected to two conduits or t... | 09/10/1996 |
| 5548895 | Method of connecting a clean socket fit connection A method of connecting an end of a plastic, male vacuum-component to a female component in a vacuum system, by attaching an elastomeric sealing member to the end of the male vacuum-component, and inserting the end of the male vacuum-component into a femal... | 08/27/1996 |
| 5388873 | Coupling device useful for joining or capping plastic pipe A coupling device for joining ends of pipes together or capping an end of a single pipe. The device includes a metal insert having serrations for engaging an inner surface of a plastic pipe, a deformable coupling member which overlies the pipe and a metal... | 02/14/1995 |
| 5341567 | Method of making clean socket fit connection The invention relates specifically to an improved method of joining plastic socket fit piping components for vacuum, pressure, and structural applications where a leak and contamination free connection is needed. A unique Dual Face/Circumferential Elastom... | 08/30/1994 |
| 5316351 | Hose swivel A swivel for transmitting fluid be sing and female housing includes a bearing assembly and seal ring assembly. The seal ring assembly comprises a pair of seal rings each including a plastic ring having a generally U-shaped cross-sectional configuration de... | 05/31/1994 |
| 5131694 | Joint seal between valve body and removable port An angle valve has a side port bore with a cylindrical inner seal surface chamfered at its outer end and a removable port fitting receivable in the port bore and having a cylindrical outer seal surface in which are formed two axially spaced-apart circumfe... | 07/21/1992 |
| 5087504 | Multi-injection molded flange with gasket in wedge shaped opening In the present invention, when a multi-injection molded body made of at least a first and a second resins is molded, catching means are formed generally by pressing a part of the surface about an opening of a concave section formed in a first molded body ... | 02/11/1992 |
| 4886305 | Double containment pipe fittings and apparatus to adhesively install the same A double containment restraint pipe fitting of fiber reinforced plastic and centrifugally cast pipe comprising an outer containment housing and a coaxially positioned inner carrier housing having coaxially positioned segment of containment pipe and carrie... | 12/12/1989 |
| 4871014 | Shell and tube heat exchanger A tube and shell type heat exchanger providing multi-pass contraflow of two heat exchange fluids includes a cylindrical outer shell, a modular baffle assembly guiding a shell fluid, a plurality of multi-wall tube sets and a pair of opposed end assemblies.... | 10/03/1989 |
| 4705307 | Tubular goods joint An improvement to the sealing ring of U.S. Pat. No. 4,085,951 is disclosed, wherein the sealing ring is of a special design including an in situ sealing flange generating corner, and the stepped thread pin and box members have been modified in the shoulde... | 11/10/1987 |
| 4700744 | Double shut-off fluid dispenser element In a bag-in-box fluid dispensing system including a bag fitment sealed over an opening in the fluid bag, a normally closed valved intermediate element sealed in the bag fitment, and a normally closed valved dispenser removably coupled to the valved interm... | 10/20/1987 |
| 4678209 | Casing hanger An improved casing hanger for suspending a pipe string from a casing head at a well head employs a plurality of slip members having a series of teeth which are adapted for frictionally engaging the wedging surface of a slip bowl. The teeth have a profile ... | 07/07/1987 |
| 4676529 | Pipe joint A pipe joint of the free-running thread type is provided with engaging shoulders on the pin and box that are positioned for the metal adjacent the shoulders to be stressed by make-up torque beyond its yield joint and extruded laterally of the shoulders in... | 06/30/1987 |
| 4655485 | Seals for use in oil and gas well production tubing An improved seal for use in couplings, and joints, as used in the formation of production tubing. Such seal is located in an inwardly tapered threaded section of the coupling, or joint, and it is characterized generally as an annular groove and ring-shape... | 04/07/1987 |
| 4653724 | Universal type butterfly valve and manufacturing process for same The invention concerns a butterfly valve of a type wherein the elastomer sleeve lines the body bore, and has cheeks which fit into circular recesses provided in the two parallel radial faces of the valve, the shape of the cheeks and of the circular recess... | 03/31/1987 |
| 4601498 | Deformable metal-to-metal seal A subterranean well tool such as a packer and attached telescoping seal receptacle assembly is disclosed. The tool is fabricated from a plurality of threaded tubular members and annular deformable rings fabricated of a metal softer than the tubular member... | 07/22/1986 |
| 4591195 | Pipe joint An improvement to the sealing ring of U.S. Pat. No. 4,085,951 is disclosed, wherein the sealing ring is of a special design including an in situ sealing flange generating corner, and the stepped thread pin and box members have been modified in the shoulde... | 05/27/1986 |
| 4588213 | Threaded pipe connection In the preferred embodiment, this invention provides a threaded pipe coupling for connection with a conventional threaded pipe end so as to effect improved sealing against internal fluid pressure and against external fluid pressure as may be required in a... | 05/13/1986 |
| 4582349 | Plastically deformed seals in downhole tools A metal-to-metal fluid tight seal configuration formed between two abutting tubular members for use in subterranean oil and gas wells is disclosed. A metal-to-metal fluid tight seal is utilized in a shear release expansion joint assembly mounted by means ... | 04/15/1986 |
