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| Number | Title | Issue Date |
| 8186724 | Connecting head structure for high-pressure fuel injection pipes A thick-wall small-diameter high-pressure fuel injection pipe has a spherical seat surface, an annular flange, and a conical surface continued from the seat surface at a connecting end of the pipe. If the pipe is configured so that t (thickness)/D (outer diameter) | 05/29/2012 |
| 8113550 | Connection with tail piece for a press-fitting An adapter integrates a tail piece and connection for coupling to plumbing fittings utilizing a union nut or flange and provides a press-fit connection to the tail piece for installation in the system. The method of manufacturing the adapter comprises the steps of f... | 02/14/2012 |
| 7963572 | Differential pitch hammerless connection with hydraulic driving mechanism A threaded connection assembly comprises a nut, a multiplier connected to the nut via a first threaded interface having a first number of threads per inch and a well servicing pipe coupling connected to the multiplier via a second threaded interface having a second ... | 06/21/2011 |
| 7618072 | Connecting structure of connector A connection structure is provided having a female thread formed on the inner peripheral surface of a lock ring in a male connector engaging a male thread on the outer peripheral surface of a female connector when the male connector and the female connector are scre... | 11/17/2009 |
| 7472932 | Luer-lock connector for medical devices A Luer-Lock connector for medical devices with a tubular body and a swivel nut enclosing it and secured on it. The swivel nut has a radially inward-protruding edge and the tubular body has at least one radially outward-protruding elastic arm, whose end can be stoppe... | 01/06/2009 |
| 7392664 | Universal coupling device A coupling in accordance with the present invention may be used to join devices together without the need for conduits or other intermediaries. A nut may be used to couple the coupling to a first device via a first thread portion and to a second device via a second ... | 07/01/2008 |
| 7353883 | Automotive fire suppression system with quick connect fire suppression agent distribution system An onboard fire suppression system for an automotive vehicle includes at least one reservoir containing a fire suppressant agent and a propellant, operatively associated with the reservoir, for expelling the fire suppressant agent from the reservoir. A distribution ... | 04/08/2008 |
| 7341281 | Connector for high-pressure riser A connector (1) for joining two pipe sections (2) and (3) making up a riser includes a male tubular element (4) and a female tubular element (5) which fit into each other and have an axial shoulder (8) or (9). Locking... | 03/11/2008 |
| 7222889 | Self-locking self-bonding rigid coupling A coupling assembly is provided for releasably interconnecting confronting ends of conduit members. The coupling assembly creates a self-locking, and self-bonding connection wherein locking and unlocking is achieved by a predetermined amount of rotation of a lock nu... | 05/29/2007 |
| 7213576 | High pressure fuel injection tube and method of forming the same A high pressure fuel injection tube includes a connection head with a seat face in a spherical shape. A ring-like flange is spaced from the seat face in an axial direction. A conical portion is formed in the interval between the ring-like flange and the seat face. A... | 05/08/2007 |
| 7201404 | Union nut with lock member Union nut (10) includes body (20) and lock member (50). Body (20) includes thread retaining end (30) with threads (33) for mounting upon a threaded pipe (120) and flange retaining end (40) including partial col... | 04/10/2007 |
| 7156425 | Quick connect and quick disconnect plumbing apparatus A plumbing apparatus for connecting a tankless hot water heater to a cold water supply line and a hot water outlet line includes a union and a tee that are interconnected to one another. A first connector at one end of the union is provided for connecting the union ... | 01/02/2007 |
| 7137652 | Pipe joint structure and method of assembling same In a pipe joint structure, a second screw thread formed on an outer circumference end of a joint member is screwed deep into a first screw thread formed on an inner circumference of a cylindrical joint fitting member whose axial end is bonded to a common rail body s... | 11/21/2006 |
| 7118138 | Quick connect fastener and connection A connecting fastener is provided. The fastener includes a cylindrical base that includes a first end and a second end and a wall. A central bore is defined in the base and an aperture is defined in the wall. At least one projection extends from an inner surface of ... | 10/10/2006 |
| 7014215 | Quick connect coupling A quick connect hose coupling for connecting a hose to a fixture of the type having a hose stem portion including a hose insert portion, having a fixture portion including a fixture connection portion, and having a joinder portion is disclosed. The joinder portion i... | 03/21/2006 |
| 6994380 | High pressure quick connect coupling and seal A quick connect and disconnect pipe coupling and seal assembly including a first generally cylindrical coupling head having a bore therein for connection to a first conduit and a raised annular ring, a second generally cylindrical coupling head having a bore therein... | 02/07/2006 |
| 6971683 | Joint for tubings A joint for tubings with which, in tightening the nut member (20), the friction torque applied to the first end face (32) of the control ring (30) by the bore peripheral face (25) of the internally threaded bore (21) of the nut mem... | 12/06/2005 |
| 6935377 | High-pressure fuel injection pipe having connecting head A high-pressure fuel injection pipe has a connecting head with an outer circumference formed for a mating seat portion. A shallow annular groove is formed in the inner side of the connecting head while shaping the head. A connecting washer is fit on the outer circum... | 08/30/2005 |
| 6905142 | Hydraulic coupling An improved hydraulic coupling includes a fitting and a nut that are threadably connectable together. The fitting includes a generally annular groove having a lateral frusto-conic engagement surface. The nut includes a plurality of elongated fingers that each includ... | 06/14/2005 |
| 6902210 | Universal connector tubing The invention is a universal connector which is useful with a variety of differently configured and shaped fittings as well as for applications when the fittings are identical. The connectors provided at either end of the tube may be formed by either compression mol... | 06/07/2005 |
| 6899358 | Hammer union and seal therefor A hammer union comprises a thread end, a nut end and a hammer nut which, when cinched up, compresses a composite seal assembly thereby preventing leakage. The seal assembly comprises a metal insert of a size to pass into the seal groove of conventional hammer unions... | 05/31/2005 |
| 6843275 | High-pressure fuel injection pipe A high-pressure fuel injection pipe has a connecting head portion increased in diameter by buckling molding at the end of a thick and small-diameter metallic pipe. An under-head portion of the connecting head is formed with a thick wall portion that satisfies condit... | 01/18/2005 |
| 6840283 | High-pressure fuel injection pipe having connecting head portion A high-pressure fuel injection pipe having connecting head portion is provided which is capable of eliminating a fear of the occurrence of cavitation erosion of the inner surface of the connecting head portion and a fatigue failure of the same head portion by having... | 01/11/2005 |
| 6808181 | Bushing and sealing ring assembly A bushing and sealing ring assembly including a sealing ring and a bushing. The sealing ring has a cylindrical base with an external thread and a reduced diameter, upstanding cylindrical sleeve extending co-axially from one end of the base with a predetermined heigh... | 10/26/2004 |
| 6805384 | Sealing mechanism An apparatus includes a body, an adapter and a seal ring. The apparatus may be coupled to provide a seal that has a primary metal to metal seal and a secondary seal obtained via extrusion of the seal ring. ... | 10/19/2004 |
| 6764110 | Remotely pretensioned threaded tubular connections This invention is a method and apparatus for making a pressure-containing threaded tubular connection, suitable for remotely operated connection and separation, utilizing electrical heating to reduce the amount of makeup torque required to produce reliable preloadin... | 07/20/2004 |
| 6698801 | Prestressed welded connection stub for a fuel injection system for internal combustion engines Disclosed is a connection stub and a housing, in particular a high-pressure fuel reservoir, for a fuel injection system for internal combustion engines with a welded connection stub, in which sealing faces between the housing and the connection stub are p... | 03/02/2004 |
| 6604762 | Hydraulic fitting A hydraulic coupling that is used for connecting hydraulic tubular lines includes a male plug which will mate with a standard tube end flare. The male plug has a rounded end that will provide for a line contact with the interior surface of the standard fl... | 08/12/2003 |
| 6581593 | Universal oxygen connector system An oxygen connector system for coupling an oxygen source to an oxygen tube comprises a source of oxygen. The source has an output orifice through which source oxygen is adapted to pass. The orifice has an inner bore and an outer surface. A flexible cylind... | 06/24/2003 |
| 6568718 | Junction for flexible tube for high pressure fluids A junction for a flexible tube for high pressure fluids which comprises a sleeve pressed down onto the flexible tube, for coupling with a connection element of the flexible tube, where a female rotating threaded connection element is connected to the conn... | 05/27/2003 |
| 6487860 | Turbine engine fuel supply system A fuel system for a gas turbine engine having a fuel conduit carried within an outer containment member for receiving and containing leakage from the fluid conduit. The fuel conduit includes an end that carries an elongated ferrule that has a first, enlar... | 12/03/2002 |
| 6435570 | Resin pipe joint A resin pipe joint comprising a tapered flare portion (10a) formed on a pipe (10), an inclined portion (11a) formed internally of a joint body (11), an annular member (12) having inner peripheral surface fitted on the pipe (10) and the outer peripheral su... | 08/20/2002 |
| 6186121 | Common rail and method of manufacturing same A structurally simple common rail is highly sealed and light weight manner. The common rail includes a thick wall pipe having a flow passage for accumulating pressure of high pressure fuel. The high pressure fuel is supplied from a high-pressure pump and ... | 02/13/2001 |
| 6179348 | Tube-connecting fitting and fitting structure The present invention is directed to a down-sizable fitting for transferring a high-temperature, high-pressurized special chemical fluid which should be under strict control used in a high technology field or industry. A fitting according to the invention... | 01/30/2001 |
| 6007112 | Pipe coupling apparatus for use in air conditioners A device for coupling together a copper pipe and a bolt pipe in an air conditioner. The copper pipe has first and second outwardly flared parts, while the bolt pipe has first and second inwardly inclined end surfaces. The end surfaces are brought into con... | 12/28/1999 |
| 5903964 | Common rail and method of manufacturing same A common rail is provided which is simple in structure and capable of connecting a piping component to a thick wall pipe thereof in a highly sealed and light weighted manner. In a common rail adapted to connect a pipe component to at least one end of a th... | 05/18/1999 |
| 5882042 | Connector for freon hose assembly A connector body at the end of a freon line, of the type which is freely rotatable on the line, and is able to move from a first position adjacent the freon hose surrounding the line to a second position at the end of the line for threadably engaging an a... | 03/16/1999 |
| 5797633 | Hose connector, particularly for the connection of hoses, such as garden hoses A hose connector with gripping elements (18) pressing a hose (14) on a socket (15) uses a two-part sleeve (24). The two-part sleeve includes a screw piece (25) and an extension sleeve connected to the screw piece by a rotary connection and the two-part sl... | 08/25/1998 |
| 5538294 | Corrugated flexible metal piping assembly A flexible metal piping assembly includes a body with corrugations having spiral (helical) or annular configurations. End connections are mounted on the body ends, which can be flanged or male-threaded. A layer of insulating or sealing material can be app... | 07/23/1996 |
| 5520492 | Sliding parts and method of producing same A sliding part having a metallic main body which is formed with a silver plating layer over a surface thereof slidable in contact with other metallic part. The silver plating layer has a crystal structure so adapted that the intensity of diffraction X-ray... | 05/28/1996 |
