Bizarre Patents
A Receptacle for supporting, rotating and sculpting a portion of ice cream or similarly malleable food while it is being consumed.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7665738 | Self-tightening type sealing device In a self-tightening type sealing device according to the present invention, not only a sealing member is tightened by an internal pressure, but also a tightening force imparting device which tightens the sealing member separately from the internal pressure is provi... | 02/23/2010 |
| 7347274 | Annular barrier tool The present invention provides for an annular barrier tool to block or restrict the flow of well fluids in the annular region of a well. ... | 03/25/2008 |
| 7243733 | Cup tool for a high-pressure mandrel and method of using same A cup tool includes a cup tool tube having a threaded upper end for connection to a high-pressure mandrel. The cup tool has an outer surface over which an elastomeric cup is slidably mounted for movement from an unset position for entry into a wellbore to a set posi... | 07/17/2007 |
| 7234533 | Well packer having an energized sealing element and associated method The present invention provides for a seal assembly that maintains a seal under various conditions by providing a source of stored energy that can be used to insure contact forces are maintained. ... | 06/26/2007 |
| 7231970 | Non-rotational casing hanger and seal assembly running tool A non-rotational casing hanger and seal assembly running tool for use in oil and gas drilling operations has a mandrel and a tool body that is carried by the mandrel. The tool body supports a plurality of latching segments for releasably connecting the tool body to ... | 06/19/2007 |
| 7152631 | Pipe repair tool The pipe repair tool provides for repairing a damaged section of a pipeline. The repair tool comprises a main body having a top surface and a bottom surface. A compressible alignment portion is positioned above the main body. A compression plate is positioned above ... | 12/26/2006 |
| 7069987 | Casing adapter tool for well servicing The invention provides a casing adapter tool which connects and seals to a casing pipe at its lower end and to production or service equipment at its upper end, and is used with well servicing equipment, such as is involved in fracturing. The casing adapter tool inc... | 07/04/2006 |
| 6705615 | Sealing system and method A sealing system for sealing with a generally cylindrical surface 52 of a tubular or another tool 50 includes an annular packer element 10, a wedge ring 60 having a substantially conical outer surface 62 configured to radially expa... | 03/16/2004 |
| 6510895 | Energized sealing cartridge for annulus sealing between tubular well components A mechanically energized annular packoff seal cartridge for metal-to-metal sealing with substantially concentrically arranged tubular members, such as the tubular wellhead housing and well casing of an oil and gas well. A tubular pressure responsive energ... | 01/28/2003 |
| 6176310 | Assembly for sealing the annulus between concentric cylindrical surfaces An assembly for sealing the annular space between the inner cylindrical surface of a tubular member and the outer surface of a cylindrical member having a separate upper and lower seal member each of which are sealably and translatably positioned on the c... | 01/23/2001 |
| 5904354 | Mechanically energized element The inventive sealing assembly designed to be set by longitudinal compression is mechanically energized, and comprises an elastomeric sealing element and a flexible member in intimate contact with the sealing element, a flexible portion of the flexible me... | 05/18/1999 |
| 5615736 | Unitary diversionary-tubing hanger and energizable rod seal A simple one piece device, herein referred to as an unitary diversionary-tubing hanger, or UDTH, for attachment to a wellhead that functions as a tubing hanger, a diverter of flow from the vertical to the horizontal or visa versa, and a securing device fo... | 04/01/1997 |
| 5456314 | Wellhead annulus seal A seal for a wellhead housing employs a locking groove. The seal is of a U-shape, having an inner and outer radially spaced apart legs. An energizing ring is stroked downward to force the legs apart to cause them to seal between the wellhead housing in th... | 10/10/1995 |
| 5257792 | Well head metal seal A metal well head seal for sealing between inner and outer concentric well head components which includes a circular metal seal having a flat end and a tapered end and positioned between the inner and outer components. A forcing cone on one of the compone... | 11/02/1993 |
| 5183268 | Metal-to-metal wellhead seal for rough casing An annular metallic seal element for wellhead housings to provide a fluid-tight seal with a well casing that will withstand extreme temperatures and high pressures.... | 02/02/1993 |
| 5129660 | Seal assembly for a well housing hanger structure The present invention relates to an improved seal assembly for sealing between the interior sealing surface of a well housing and the exterior sealing surface of a hanger landed within the well housing and includes a seal body having a pair of outer lips ... | 07/14/1992 |
| 5110144 | Casing hanger seal assembly The present invention relates to an improved seal assembly for sealing between the interior sealing surface of a well housing and the exterior sealing surface of a hanger landed within the well housing and includes a seal body having a pair of outer lips ... | 05/05/1992 |
| 5067734 | Metal seal with grooved inlays A metal seal for sealing against casing in a well has a plurality of circumferentially spaced metal hands. An inlay material fills the cavities located between the metal bands. The inlay material has a groove formed in its sealing side. The metal bands ar... | 11/26/1991 |
| 5066029 | Annular sealing apparatus An improved seal for sealing across an annulus between an inner cylindrical sealing surface and an outer cylindrical sealing surface. The seal provides a body and a flange spaced therefrom with an annular flexible arch extending between the body and the f... | 11/19/1991 |
| 4932472 | Packoff with flexible section for casing hanger A metal seal or packoff for a casing hanger has features which allow a slight downward movement of the casing hanger relative to the well head after the seal has been set. The seal ring has a base and inner and outer walls that extend upward from the base... | 06/12/1990 |
| 4921259 | Packoff seal with dual member engaging means An improved annular seal including a resilient seal ring, a first follower, a second follower being threadedly connected to the first follower, threads on the first follower for setting movement of the followers, a shear pin for releasably securing the se... | 05/01/1990 |
| 4907812 | Bi-directional unsupported area seal A fluid pressure sealing assembly 40 adapted for bi-directional sealing of the annulus between two coaxially disposed cylindrical surfaces 16, 48 and including a stack of packing rings 41 sandwiched between a pair of retainer rings 43, 45. The packing ass... | 03/13/1990 |
| 4900067 | Retrievable packoff with an embedded flexible, metallic band A packoff (10) with an elastomeric seal ring (16) interposed between two metallic seal rings (12) and (14) with retrievable characteristics in the form of a relatively thin apertured curved cylindrical band (50) extending between the two metallic seal rin... | 02/13/1990 |
| 4900041 | Subsea well casing hanger packoff system An improved metal-to-metal seal packoff system for establishing a high pressure metallic barrier between concentric tubular elements, such as a wellhead housing and a casing hanger, including a seal element with a pair of annular metal sealing lips that a... | 02/13/1990 |
| 4832125 | Wellhead hanger and seal An improved subsea hanger and seal having a hanger body with an external landing shoulder and an upstanding sealing rim with external sealing teeth and multiple internal camming surfaces and an actuating ring which fits within the sealing rim and includes... | 05/23/1989 |
| 4823871 | Hanger and seal assembly The improved structure of the present invention includes a hanger having a landing shoulder for engaging the landing seat within a wellhead housing, a hanger holddown ring, an external sealing surface spaced from the internal sealing surface of the housin... | 04/25/1989 |
| 4790572 | Tapered wedge packoff assembly for a casing hanger A packoff assembly for sealing between a casing hanger and a wellhead for a subsea well uses a tapered wedge. The tapered wedge locates between inner and outer seal rings formed of metal. When moved downward, the wedge member pushes the seal rings outward... | 12/13/1988 |
| 4784222 | Wellhead sealing assembly An improved wellhead sealing assembly having an annular body with an outer diameter sufficient to pass through the interior of the wellhead housing and an inner diameter smaller than the exterior of the wellhead hanger so that it lands on the upper end of... | 11/15/1988 |
| 4771828 | Wellhead seals A seal assembly for sealing across the annulus in a subsea wellhead having pressure enhancement provided behind at least one of the sealing surfaces to ensure a positive metal-to-metal sealing. In the preferred form of the invention the seal assembly incl... | 09/20/1988 |
| 4766956 | Wellhead annular seal An improved annular seal and hanger which are to be installed in a wellhead housing. The annular seal assembly includes seal ring having a central body with upper outer rim, upper inner rim, lower outer rim and lower inner rim extending from said central ... | 08/30/1988 |
| 4759409 | Subsea wellhead seal assembly An improved subsea wellhead seal assembly include an annular body having a pair of lower annular skirts, one extending downwardly and outwardly and the other extending downwardly and inwardly, a lower landing ring and means movably securing the lower land... | 07/26/1988 |
| 4757860 | Wellhead equipment There are disclosed several forms of subsea wellhead equipment of the type in which casing hangers connected to the upper ends of successively smaller diameter casing strings are adapted to be lowered into and landed within the bore of a casing head, whic... | 07/19/1988 |
| 4751965 | Wellhead seal assembly The improved wellhead seal assembly includes an annular metal seal ring having upper spaced apart inner and outer rims with an upper energizing ring positioned between such rims and movable axially between them, a resilient seal embedded in and extending ... | 06/21/1988 |
| 4742874 | Subsea wellhead seal assembly An improved annular seal between tubular members in a subsea wellhead having an annular seal member with a U shape in section with the opening facing upwardly and two interengaged annular wedges for energizing the sealing surfaces of the inner and outer p... | 05/10/1988 |
| 4718679 | Lockdown ring assembly for wellhead seal A lockdown loading ring mechanism for a dual crossover seal in a pressurized wellhead which comprises a segmented loading ring assembly 60 of a plurality of arcuate segments 60a arranged in circular fashion within the wellhead annulus between the dual sea... | 01/12/1988 |
| 4702481 | Wellhead pack-off with undulated metallic seal ring section A pack-off (10) comprising of two metallic rings (12, 14) with a serpentine or undulating band (16) integral therewith embedded in elastomeric material (32). The lower metallic ring (14) is narrower than the upper metallic ring (12) and the serpentine ban... | 10/27/1987 |
| 4665979 | Metal casing hanger seal with expansion slots A casing hanger seal for a subsea well uses a seal ring having inner and outer walls spaced radially apart from each other. An energizing ring is moved from disengaged position to an engaged position between the walls, wedging them apart to form the metal... | 05/19/1987 |
| 4645214 | Wellhead sealing assembly A sealing assembly for sealing between a wellhead housing and a casing suspended in the housing including a base ring with an upper surface with inner and outer shoulders and an annular recess between the shoulders, a first energizing ring with a shoulder... | 02/24/1987 |
| 4606698 | Centrifugal blood pump with tapered shaft seal A centrifugal blood pump has a tapered seal between a pump housing wall and a hub of an impeller which provides a fluid tight seal interface surrounding a drive shaft which is connected to the impeller and which extends through the pump housing wall. The ... | 08/19/1986 |
| 4595053 | Metal-to-metal seal casing hanger A hanger for hanging a string of conduit within a wellhead has a metal-to-metal seal. The hanger has a body that locates within the wellhead and provides an annular clearance between the body and the wellhead. A locking device fits within this clearance t... | 06/17/1986 |
