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Class Information
Number: 277/322
Name: Seal for a joint or juncture > Seal for well apparatus
Description: Sealing means wherein the sealing means is for use in a device or mechanism that extracts fluid from earth (e.g., a well, pump, etc.) or bores or penetrates the earth.
Sub-classes under this class:
| Class Number |
Class Name |
Patents |
| 277/335 |
Axially facing packing cup |
19 |
| 277/336 |
For below ground apparatus |
162 |
| 277/324 |
For overpressure control device (e.g., seal for a blowout preventer, etc.) |
27 |
| 277/331 |
Inflatable packer |
30 |
| 277/323 |
Installation, removal, assembly, disassembly, or repair feature |
23 |
| 277/328 |
Longitudinally actuated packer for above ground apparatus |
45 |
| 277/343 |
Seal (e.g., wiper, oil saver, stripper, etc.) accommodates irregular size of inner part |
29 |
| 277/344 |
Segmented radially actuated packer (e.g., oil saver, gas saver, etc.) for above ground apparatus |
3 |
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7416770 |
Reinforcement ring |
Aug. 26, 2008 |
| 7228915 |
Device and method to seal boreholes |
Jun. 12, 2007 |
| 6780939 |
Low molecular weight hydrogenated nitrile rubber |
Aug. 24, 2004 |
| 6752397 |
Redundant metal-metal seal |
Jun. 22, 2004 |
| 6371487 |
Gimbal and seal for the drivehead of a downhole rotary pump |
Apr. 16, 2002 |
| 6167963 |
Removable non-metallic bridge plug or packer |
Jan. 2, 2001 |
| 5975589 |
Hydraulic coupling |
Nov. 2, 1999 |
| 5941530 |
Unidirectional environment barrier seal for subsea wellhead equipment and valves |
Aug. 24, 1999 |
| 5799949 |
Annular chamber seal |
Sep. 1, 1998 |
| 5791657 |
Seals containing composite non-extrusion springs |
Aug. 11, 1998 |
| 5765834 |
Sealing device |
Jun. 16, 1998 |
| 5639227 |
Seal arrangement for the drivehead of a downhole rotary pump |
Jun. 17, 1997 |
| 5507504 |
Sealing device with c-shaped lips and central projection |
Apr. 16, 1996 |
| 5464063 |
Well assembly metal seal |
Nov. 7, 1995 |
| 5447026 |
Hydraulic oil well pump drive system |
Sep. 5, 1995 |
| 5409073 |
Rotating head with elastomeric member rotating assembly |
Apr. 25, 1995 |
| 5358054 |
Method and apparatus for controlling steam breakthrough in a well |
Oct. 25, 1994 |
| 5355961 |
Metal and elastomer casing hanger seal |
Oct. 18, 1994 |
| 5330201 |
Sealing assembly |
Jul. 19, 1994 |
| 5322137 |
Rotating head with elastomeric member rotating assembly |
Jun. 21, 1994 |
| 5297805 |
Sealing ring |
Mar. 29, 1994 |
| 5285853 |
Casing hanger seal with test port |
Feb. 15, 1994 |
| 5224715 |
Supported-lip low interference metal stab seal |
Jul. 6, 1993 |
| 5201835 |
Wellhead seal with protective rib |
Apr. 13, 1993 |
| 5193616 |
Tubing hanger seal assembly |
Mar. 16, 1993 |
| 5180008 |
Wellhead seal for wide temperature and pressure ranges |
Jan. 19, 1993 |
| 5167283 |
Combination ball valve and annular pipe seal |
Dec. 1, 1992 |
| 5165704 |
Blowout preventer bonnet seal carrier |
Nov. 24, 1992 |
| 5149148 |
Pipe swivel joint with improved bore seal |
Sep. 22, 1992 |
| 5137084 |
Rotating head |
Aug. 11, 1992 |
| 5114158 |
Packing assembly for oilfield equipment and method |
May. 19, 1992 |
| 5111879 |
Sanitary locking lip split well seal |
May. 12, 1992 |
| 5105879 |
Method and apparatus for sealing at a sliding interface |
Apr. 21, 1992 |
| 5094297 |
Casing weight set seal ring |
Mar. 10, 1992 |
| 5069278 |
Leakage control device |
Dec. 3, 1991 |
| 5067874 |
Compressive seal and pressure control arrangements for downhole tools |
Nov. 26, 1991 |
| 5062479 |
Stripper rubbers for drilling heads |
Nov. 5, 1991 |
| 4955436 |
Seal apparatus |
Sep. 11, 1990 |
| 4911245 |
Metal seal with soft inlays |
Mar. 27, 1990 |
| 4872508 |
Oil well pump leakage accumulator |
Oct. 10, 1989 |
| 4872517 |
Rotatable fluid conductor for well apparatus |
Oct. 10, 1989 |
| 4848777 |
Pressure energized/pressure intensified casing seal |
Jul. 18, 1989 |
| 4821799 |
Grease injection control system |
Apr. 18, 1989 |
| 4822057 |
Mechanical face seal for rock bits |
Apr. 18, 1989 |
| 4815770 |
Subsea casing hanger packoff assembly |
Mar. 28, 1989 |
| 4795128 |
Gate type kelly cock valve |
Jan. 3, 1989 |
| 4791987 |
Wellhead seal |
Dec. 20, 1988 |
| 4771832 |
Wellhead with eccentric casing seal ring |
Sep. 20, 1988 |
| 4770426 |
Sealing structure for the upper end of a rising or conveying pipeline |
Sep. 13, 1988 |
| 4678209 |
Casing hanger |
Jul. 7, 1987 |
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