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| Number | Title | Issue Date |
| 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 |
| 7357189 | Seal There is disclosed an expandable seal for sealing at least part of a wall of a well borehole, an expandable seal assembly comprising at least two such expandable seals, and a method of sealing at least part of a well borehole using such a seal. In one embodiment, th... | 04/15/2008 |
| 7347224 | Supply and exhaust pipe In order to provide a supply and exhaust pipe comprising a drop-off prevention mechanism, particularly effective for pipes with a large diameter, to increase bending strength and sealing efficiency, formation of a hemmed section A at an top edge of an insert portion... | 03/25/2008 |
| 7249789 | Water well casing A novel design for the connection of polyvinyl chloride (PVC) casing. Each length of casing has a male end and a female end. The female end has a narrowing interior diameter with its wider interior diameter at its outermost end sufficient to receive the male end of ... | 07/31/2007 |
| 7172029 | Bi-directionally boosting and internal pressure trapping packing element system The present invention is a packer for sealing an annular region in a wellbore. The packer includes a packing element which is held through bidirectional forces. The packer first comprises an inner mandrel. Disposed around the inner mandrel are three tubulars: (1) a ... | 02/06/2007 |
| 7159906 | Methods and apparatus for flange sealing Embodiments of the invention, can utilize a flange system incorporating metal sealing. In a further specific embodiment, the subject invention can utilize stainless steel sealing, where the flanges and seals are stainless steel. The subject seal may be made and rele... | 01/09/2007 |
| 7150478 | Integrated seal for tube to hose connection A hose connector adapted to have a polymeric hose fitted on the outer periphery of the hose connector. The hose connector comprises a metal tubing and a sealing element. The sealing element includes a ring portion and a resilient member portion attached to the ring ... | 12/19/2006 |
| 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 |
| 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 |
| 7066086 | Stencil printer In a stencil printer, a diaphragm pump is used as an ink supply pump. ... | 06/27/2006 |
| 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 |
| 7036832 | Oversized massive break apart dolly An oversized, break apart dolly for picking up and lifting massive articles such as snowmobiles. The dolly stands more than six feet tall. A typical operator of the dolly brings his arms over his head to reach the handle of the dolly, and then uses his weight to dra... | 05/02/2006 |
| 7032934 | Hydraulic fitting A connector for a fluid conduit is provided herein. The connector includes a conduit structure and an annular seal member. The conduit structure has a frustro-conical surface and a seal groove. The frustro-conical surface may be an external surface or an internal su... | 04/25/2006 |
| 7004478 | Shallow metallic s-seal A metallic seal is provided that concentrates the available load over a narrow band to produce a sealing dam over a sufficient width to minimize leakage on a molecular level. The metallic seal has a first annular end section with has a first annular sealing surface,... | 02/28/2006 |
| 7000953 | Pipe screw-connection A pipe screw-connection for connecting a pipeline having a connection end with a deformed annular bead, including a connection stub and a screw-connection coupling part, which can be screw-connected to the connection stub in order to retain the pipeline in a sealed ... | 02/21/2006 |
| 6997264 | Method of jointing and running expandable tubulars A connector arrangement used for connecting a first tubular to a second tubular. The first tubular member has at least one circumferential ring profile, and the second tubular member has a corresponding number of matching circumferential ring profiles. When the ring... | 02/14/2006 |
| 6988748 | Fluid coupling assembly A fluid coupling assembly having a first and second metal tube, each tube having an outwardly flared end. A first connector includes a throughbore, a first end and a second end with a radially inwardly extending rim at the first end of the first connector. The first... | 01/24/2006 |
| 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 |
| 6971685 | Multi-point high pressure seal for expandable tubular connections An expandable threaded connection between segments of expandable tubulars that provides multiple sealing points along the pin and box members that can withstand high pressure is disclosed. The present invention utilizes a gap that is created between the pin nose and... | 12/06/2005 |
| 6932355 | Sealing arrangement There is referred to a sealing arrangement (10, 10′) comprising two armature members (11, 12), which are adapted to receive a sealing ring (13, 13′) between them for sealing off a joint between the armature members (11, 12), and a cla... | 08/23/2005 |
| 6913293 | Spiral spline pipe joint apparatus and method A pipe joint apparatus and method using spiral groove halves formed on the nested surfaces of male and female pipe ends. The exterior half of the spiral groove is connected to an exit port. The interior half of the spiral groove has a proximal end recessed from edge... | 07/05/2005 |
| 6907937 | Expandable sealing apparatus The present invention generally relates to an apparatus for sealing a wellbore. The sealing apparatus includes an expandable tubular body having one or more sealing elements disposed thereon. In one aspect, the sealing elements include swelling and non-swelling seal... | 06/21/2005 |
| 6902008 | Bi-directionally boosting and internal pressure trapping packing element system Present invention is a packer for sealing an annular region in a wellbore. The packer includes a packing element which is held through bi-directional forces. The packer first comprises an inner mandrel. Disposed around the inner mandrel are three tubulars: (1) a top... | 06/07/2005 |
| 6857668 | Replaceable corrosion seal for threaded connections The threaded connection between the pin and the box ends of two pipes is sealed externally and internally to protect the threads in the connection from exposure to corrosive fluids. Seals are provided at each axial end of the threads. External seals are formed by me... | 02/22/2005 |
| 6854770 | Pipe or the like, a female end ring, and a method of manufacturing such a pipe or the like A pipe formed from a concrete cylinder has an end ring with a ferrule which can be snuggly mounted on one end of the pipe and a skirt axially adjacent to the ferrule for receiving a mail endpiece of another pipe. The ferrule is expanded as it is mounted on the cylin... | 02/15/2005 |
| 6598908 | Hydraulic fitting A connector for a fluid conduit is provided herein. The connector includes a conduit structure and an annular seal member. The conduit structure has a frustro-conical surface and a seal groove. The frustro-conical surface may be an external surface or an ... | 07/29/2003 |
| 6431609 | Pipe connection for ventilating duct system A pipe connection for use in a ventilating duct system having ducts with circular cross-section is adapted to be inserted with a close fit into an outer pipe and be connected therewith. The pipe connection has a circumferential groove, in which a circumfe... | 08/13/2002 |
| 6164705 | Combination of pipes and gasket for connection thereof Pipes are securely connected by an annular gasket. The gasket includes an inner portion, an outer portion situated radially outwardly of the inner portion, and a resilient connecting portion for connecting the inner and outer portions at one side of the g... | 12/26/2000 |
| 5979945 | Common rail A common rail is provided in the pipe joint of the branch connector to improve the strength and resistance against the internal pressure fatigue; said common rail having a longitudinal conduit of a substantially circular section therein and a plurality of... | 11/09/1999 |
| 5924747 | Coupling for use with container valve When first and second coupling pieces are tightened in the axial direction thereof by turning a screw member, the second coupling piece is prevented from being turned together with the screw member, thereby enhancing sealing property, cleanliness and work... | 07/20/1999 |
| 5845945 | Tubing interconnection system with different size snap ring grooves A threadless interconnection system for sections of pipe as provided by a male/female interconnection in which the male member and female members have mating tapered surfaces providing both the camming action for inset snap rings that engage concurrently ... | 12/08/1998 |
| 5788401 | Rod joint Joints for coupling the box and pin ends of drill rods and casings, particularly for the mineral exploration industry, have single start, helical tapered threads extending axially intermediate cylinder sections. The threads have frustoconical crests and r... | 08/04/1998 |
| 5716078 | Thermoplastic pipe joint A piping structure and method of manufacture allow for the mechanical joining of two piping products as well as the hydraulic and mechanical sealing thereof by means of an elastomeric gasket having an integral pressure transference device. A socket is pro... | 02/10/1998 |
| 5518279 | No-drip hydraulic adapter A male member to a hose adapter as for metal to metal, male to female, mating has a frustoconical sealing surface, for example, of 30, 37 or 45 degrees, for mating with a corresponding female member having a corresponding sealing surface. These surfaces a... | 05/21/1996 |
| 5507531 | Seal enhancer for cylinder valve connection A cylinder valve outlet includes a bore with a large cylindrical entry leading to a tapered seat. A nipple with a cylindrical neck is fit into the large diameter entry of the bore of the valve outlet. The nipple further includes an arcuately convex mating... | 04/16/1996 |
| 5433489 | Pipe fitting A pipe fitting for use with fluid-holding apparatuses has a thread that matches any of several different types of pipe threads of the same diameter. Imperfect sealing is eliminated by simple means by taking advantage of a small chamfered area that is prov... | 07/18/1995 |
| 5393108 | Spherical exhaust flange gasket with interference fit A gasket for use on a exhaust connection between an exhaust manifold and an exhaust pipe includes a spherical sealing portion which mates with sealing portions on both the exhaust manifold and the exhaust pipe. The spherical-to-spherical-to-spherical cont... | 02/28/1995 |
| 5363545 | Method of producing a coupling for oil country tubular goods Producing a coupling for oil country tubular goods having a metal seal and a screw thread tapered toward its end. A plain pipe is cut to a predetermined length and hot-forged with longitudinal compression to form a predetermined thickened shape of its ins... | 11/15/1994 |
| 5332495 | Connector apparatus A detachable connector apparatus to provide an outlet from a bag includes a hollow nipple having a stem extending through the bag, and a nipple clamp engaged with the nipple and a portion of the bag. The bag may be supported in a pouch and locked thereto ... | 07/26/1994 |
| 5275190 | Faucet having an easily installable spout A faucet comprises a base, a spout having a first free end portion for emitting fluid and a second end portion for insertion into a hole of the base, and a sealing and locking device formed at the second end portion. The sealing and locking device include... | 01/04/1994 |
