| |
 |
|
Class Information
Number: 277/327
Name: Seal for a joint or juncture > Seal for well apparatus > For overpressure control device (e.g., seal for a blowout preventer, etc.) > Axially compressed ring
Description: Overpressure control device wherein the seal has an annular shape and is concentric to the annular passage including means acting along an annular axial flow path formed by the annular passage axis to squeeze the seal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7343968 |
Washpipe seal assembly |
Mar. 18, 2008 |
| 6649836 |
Compressor electronics housing |
Nov. 18, 2003 |
| 6425444 |
Method and apparatus for downhole sealing |
Jul. 30, 2002 |
| 6394461 |
Pressure compensated stuffing box for reciprocating pumping units |
May. 28, 2002 |
| 5851013 |
Blowout preventer packing element with metallic inserts |
Dec. 22, 1998 |
| 5588491 |
Rotating blowout preventer and method |
Dec. 31, 1996 |
| 5361832 |
Annular packer and insert |
Nov. 8, 1994 |
| 5325925 |
Sealing method and apparatus for wellheads |
Jul. 5, 1994 |
| 5116017 |
Annular sealing element with self-pivoting inserts for blowout preventers |
May. 26, 1992 |
| 4949785 |
Force-limiting/wear compensating annular sealing element for blowout preventers |
Aug. 21, 1990 |
| 4858882 |
Blowout preventer with radial force limiter |
Aug. 22, 1989 |
| 4657263 |
Annular packing unit and insert |
Apr. 14, 1987 |
| 4605195 |
Annular blowout preventer packing unit |
Aug. 12, 1986 |
| 4602794 |
Annular blowout preventer with upper and lower spherical sealing surfaces and rigid translation element |
Jul. 29, 1986 |
| 4579314 |
Annular blowout preventer |
Apr. 1, 1986 |
| 4508311 |
Annular blowout preventer |
Apr. 2, 1985 |
| 4461448 |
Well blowout preventer, and packing element |
Jul. 24, 1984 |
| 4460151 |
Annular blowout preventer |
Jul. 17, 1984 |
| 4460149 |
Annular blowout preventer with upper and lower spherical sealing surfaces |
Jul. 17, 1984 |
| 4460150 |
Annular blowout preventer |
Jul. 17, 1984 |
| 4452421 |
Well blowout preventer, and packing element |
Jun. 5, 1984 |
| 4448255 |
Rotary blowout preventer |
May. 15, 1984 |
| 4444401 |
Flow diverter seal with respective oblong and circular openings |
Apr. 24, 1984 |
| 4360186 |
Swivel joint |
Nov. 23, 1982 |
| 4339107 |
Well blowout preventer packer assembly and packer modules therefor |
Jul. 13, 1982 |
| 4310139 |
Annular blowout preventer |
Jan. 12, 1982 |
| 4099699 |
Annular blowout preventer |
Jul. 11, 1978 |
| 4098516 |
Blowout preventer packing unit with slanted reinforcing inserts |
Jul. 4, 1978 |
| 4098341 |
Rotating blowout preventer apparatus |
Jul. 4, 1978 |
| 4095805 |
Annular blowout preventer |
Jun. 20, 1978 |
|
|
|
