Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7431348 | Subsurface drill string A drill string comprises a first drill string member having a male end; and a second drill string member having a female end configured to be joined to the male end of the first drill string member, the male end having a threaded portion including generally square t... | 10/07/2008 |
| 7384076 | Pipe ring apparatus and method An apparatus and method according to which the apparatus includes a pair of connected arcuate members for clamping around a pipe, with each arcuate member including at least one protrusion. The arcuate members have a first material hardness and at least a portion of... | 06/10/2008 |
| 7364166 | Seal and retainer for a fluid connection A seal/retainer unit (10) comprising an annular sealing gasket (12) and a plurality of retaining legs (14) extending generally perpendicularly therefrom. The sealing gasket (12) and the retaining legs (14) are formed in one piece (... | 04/29/2008 |
| 7360798 | Threaded joint for steel pipes A threaded joint for steel pipes comprising a pin 1 and a box 2 each having a contact surface comprising a threaded portion 3 or 4 and an unthreaded metal contact portion 8 is provided with improved anti-galling propertied by formi... | 04/22/2008 |
| 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 |
| 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 |
| 7247006 | Method and apparatus for sealing an ultrahigh-pressure fluid system An ultrahigh-pressure fluid system, such as an ultrahigh-pressure fluid pump, includes an improved dynamic seal assembly that can withstand pressures above 40,000 psi, and more preferably, pressures up to and beyond 87,000 psi. The dynamic sealing assembly includes ... | 07/24/2007 |
| 7168744 | Fastening structure for use at low temperature A first flange and a second flange are superposed and fastened with a bolt and a nut in a fastening operation, to implement a fastening structure used at temperature lower than atmospheric temperature for the fastening operation. Assuming that the first flange has a... | 01/30/2007 |
| 6997214 | Intake tubing for engines An intake tubing includes a tubular member having a number of helical protuberances and a number of helical grooves formed in an inner peripheral surface, an inlet end for receiving fluid, and an outlet end for coupling to an engine. The helical protuberances and th... | 02/14/2006 |
| 6991268 | Pipe fitting having over-sized strengthened starter threads A pipe fitting has a body with an internally threaded bore and at least one female starter thread. The at least one female starter thread is disposed either within the bore or immediately outside of the bore. The starter thread is axially aligned with the bore threa... | 01/31/2006 |
| 6971681 | Threaded pipe with surface treatment A threaded metallic pipe for oil extraction industry has a threaded end portion with treated surface in which the metal surface has a roughness (Ra) comprised of 2.0 μm and 6.0 μm, which is covered by a uniform layer (7) of a dry corrosion inhibiting coatin... | 12/06/2005 |
| 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 |
| 6866305 | Pipe fitting having strengthened starter threads A pipe fitting has a body with an internally threaded bore and at least one female starter thread. The at least one female starter thread is disposed either within the bore or immediately outside of the bore. The starter thread is axially aligned with the bore threa... | 03/15/2005 |
| 6863313 | Threaded connection for internally clad pipe A corrosion-resistant threaded connection including a first tubular member having an outer metal tube of corrosion-prone material and an inner metal lining of corrosion-resistant material, the first tubular member forming a first pin connection having a nose portion... | 03/08/2005 |
| 6860487 | Insertable gasket and inserting structure An insertable gasket is made of a substantially cylindrical heat resistant metal and is formed into a configuration having raised and recessed portions formed continuously and alternately as viewed longitudinally and cross-sectionally. ... | 03/01/2005 |
| 6843509 | Coupler for use with metal conduits A coupler for joining an aluminum conduit to a steel or stainless steel conduit and which includes a main body which is formed from a first layer of aluminum and a layer of steel or an iron-chromium alloy which are explosively welded together, and wherein the main b... | 01/18/2005 |
| 6264249 | Fluid coupling with locked sleeve A coupling assembly for use in a loading adapter of a gasoline tanker trailer. The coupling includes an aluminum coupling body and a wear resistant bronze sleeve. The wear resistant bronze sleeve provides a durable surface for receiving latches. The sleev... | 07/24/2001 |
| 6109659 | Hydrostatic rotary union A hydrostatic rotary union has a shaft with an axial passage therethrough received within a housing having a radial passage in fluid communication with the axial passage. The shaft and housing have a radial clearance between them which establishes a squee... | 08/29/2000 |
| 6042153 | Threaded connection for internally clad pipe A corrosion-resistant threaded connection including a first tubular member having an outer metal tube of corrosion-prone material and an inner metal lining of corrosion-resistant material, the first tubular member forming a pin connection having a nose po... | 03/28/2000 |
| 5906400 | Galvanic corrosion protection system A pipe couple is shown for connecting two pipelines of different materials together in a well environment which prevents deterioration of the pipe due to galvanic action. The couple achieves its purpose by coating the interior of the more noble pipe secti... | 05/25/1999 |
| 5775302 | Fuel distributor pipe A fuel distributor pipe (1) which can be subjected to a high internal pressure loading includes at least one connecting arrangement (12) serving for releasably connecting a branch pipe (3) and having a connecting bore (5) which extends radially through th... | 07/07/1998 |
| 5653477 | High pressure access fitting and method A high pressure access fitting for a vessel, pipe or like structure includes a body of a material which is weld compatible with the vessel so the fitting may be welded to the wall of the vessel. The fitting includes an internally threaded section made of ... | 08/05/1997 |
| 5560661 | High pressure mechanical seal A relatively impervious mechanical seal is formed between the outer surface of a tube and the inside surface of a mechanical fitting of a high pressure fluid or hydraulic system by applying a very thin soft metal layer onto the outer surface of the hard m... | 10/01/1996 |
| 5549335 | Solderless metallurgical joint A metallurgical joint between a copper tube and an aluminum tube is disclosed. The metallurgical joint between the tubes is elongated and extends along the length of the telescoping tubes and is substantially free of materials other than copper and alumin... | 08/27/1996 |
| 5405176 | High pressure mechanical seal A relatively impervious mechanical seal is formed between the outer surface of a tube and the inside surface of a mechanical fitting of a high pressure fluid or hydraulic system by applying a very thin soft metal layer onto the outer surface of the hard m... | 04/11/1995 |
| 5169180 | Fluid conducting connector assembly with insulative properties A fluid conducting connector for use in water connections particularly water heater connectors. The connector assembly is designed for mating connection to a galvanized nipple for reduction of galvanic corrosion between dissimilar metal connections. An in... | 12/08/1992 |
| 5135269 | Tube coupling A tube or pipe coupling joint structure comprises a pair of spaced flange members adapted for relative movement toward each other along a longitudinal axis. Each of the flange members has a face surface which is generally a surface of revolution about the... | 08/04/1992 |
| 4893601 | Manifold for conveying a high-pressure fuel A manifold for conveying a high-pressure fuel comprises a main pipe having an axial bore and a plurality of ports formed through its wall, connected with the bore and spaced apart from one another along the length of the pipe, and a plurality of branch pi... | 01/16/1990 |
| 4871194 | Oil well pipe joint and manufacturing method therefor The present invention relates to an oil well pipe joint having improved resistance to galling and to a process for manufacturing the same, which comprises a porous blast-plated layer provided at least on a metal sealing portion by blasting soft metal part... | 10/03/1989 |
| 4647436 | Reaction tube system for a steam reformer A reaction tube system of a steam reformer, more generally referred to as tubular cracking furnace, for the indirect heating of cracking feedstock, such as the catalytic cracking of hydrocarbons, includes a plurality of reaction tubes and headers, the rea... | 03/03/1987 |
| 4626001 | Fluid fitting with high temperature capabilities This invention provides a fluid fitting made up of telescoping sleeves providing an annular space therebetween adapted to receive the end of a tube. The outer sleeve is attached to the inner sleeve by being deflected around annular ridges at one end of th... | 12/02/1986 |
| 4610466 | Convertible flare/braze fitting A convertible fitting capable of selectively achieving a brazed, soldered or flared connection to a conduit. The fitting includes an interior passage and an exterior thread. The passage receives smooth wall conduit, such as tubing, for a braze or soldered... | 09/09/1986 |
| 4600219 | Corrosion-resistant pipe coupling structures A corrosion-resistant pipe coupling made of carbon steel has on its inner surface an intermediate annular projection directed radially inward. At least an innermost part of the annular projection is formed of corrosion-resistant material such as stainless... | 07/15/1986 |
| 4540205 | Union joint A union joint for jointing pipes comprises a union head having a male screw thread formed on the outer peripheral surface of an axial inner end portion thereof and provided at its end with a seat member made of a non-ferrous material, a union tail piece h... | 09/10/1985 |
| 4506432 | Method of connecting joints of drill pipe A method of connecting a joint of drill pipe for rotary earth drilling having tool joint members on each end with threaded connections for connecting the joint with other joints of drill pipe is shown. Nickel plating is applied to a portion of the threade... | 03/26/1985 |
| 4474651 | Oil well casing and tubing joint and production of same A joint for used in connecting oil well casing and/or tubing and method of producing same are disclosed. The joint with improved metal-to-metal sealing properties as well as improved resistance to galling is made of an alloy steel containing 10% or more b... | 10/02/1984 |
| 4469338 | Gasket disposed between an apparatus and a threaded coupling for pipe conveying high pressure fluid A gasket disposed between a coupling for a pipe conveying high pressure fluid and an apparatus presenting a tapped hole in which the threaded part of the coupling is screwed, said gasket comprising a hoop made of hard, resistant material bearing by one of... | 09/04/1984 |
| 4458924 | Bimetal flange connector A bimetal flange connector (10) for connecting components (15) of a piping system such as fittings or pipe in which the bimetal flange connector (10) has a hub or preformed inset (12) of a first metal material compatible with the piping system components ... | 07/10/1984 |
| 4436228 | Keg tapping apparatus having improved retainer A keg tapping apparatus includes a keg unit secured within the neck of a keg by a retainer and a tavern unit coupled to the keg unit by the retainer. An operating handle opens valves associated with the keg unit to establish fluid communication between th... | 03/13/1984 |
| 4336958 | Pipe flange A pipe flange coupling having a carbon steel body and flange with a bore extending through the body and flange and a bolt circle in the flange, a lining throughout the entire length and circumference of the bore, and a sealing surface on the flange radial... | 06/29/1982 |
