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Class Information
Number: 277/324
Name: Seal for a joint or juncture > Seal for well apparatus > For overpressure control device (e.g., seal for a blowout preventer, etc.)
Description: Seal for well apparatus wherein the seal is for use in an annular passage formed between an inner part (e.g., cable, drill stem, pipe, rod, rope, string, tubing, etc.) and a surrounding part (e.g., well casing, tubing head, etc.) intended to regulate a higher than normal pressure condition or prevent upward movement of the inner part (e.g., cable, drill stem, pipe, rod, rope, string, tubing, etc.).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7416021 |
Armored stripper rubber |
Aug. 26, 2008 |
| 7380610 |
Stripper rubber insert assembly |
Jun. 3, 2008 |
| 7278494 |
Stripper rubber insert assembly |
Oct. 9, 2007 |
| 7240727 |
Armored stripper rubber |
Jul. 10, 2007 |
| 7237618 |
Stripper rubber insert assembly |
Jul. 3, 2007 |
| 7017881 |
Blowout preventer ram packer and wear insert |
Mar. 28, 2006 |
| 6945098 |
Hydrocyclone wear-detection sensor |
Sep. 20, 2005 |
| RE38249 |
Rotating blowout preventer and method |
Sep. 16, 2003 |
| 6394460 |
One-piece ram element block for wireline blowout preventers |
May. 28, 2002 |
| 6290231 |
Diverter flow line seal |
Sep. 18, 2001 |
| 6109348 |
Rotating blowout preventer |
Aug. 29, 2000 |
| 6003879 |
Seal for steel furnace emissions |
Dec. 21, 1999 |
| 5873414 |
Bypass valve for downhole motor |
Feb. 23, 1999 |
| 5860478 |
Sub-sea test tree apparatus |
Jan. 19, 1999 |
| 5279365 |
Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms |
Jan. 18, 1994 |
| 4783084 |
Head for a rotating blowout preventor |
Nov. 8, 1988 |
| 4637458 |
Blowout preventer for use in combination with a deep well pump |
Jan. 20, 1987 |
| 4529210 |
Drilling media injection for rotating blowout preventors |
Jul. 16, 1985 |
| 4431704 |
Composition for blowout preventer |
Feb. 14, 1984 |
| 4358085 |
Keying means for segmented end ring blowout preventer |
Nov. 9, 1982 |
| 4345735 |
Blowout preventer |
Aug. 24, 1982 |
| 4206929 |
Blow out preventer |
Jun. 10, 1980 |
| 4193574 |
Well shut off device |
Mar. 18, 1980 |
| 4007904 |
Annular blowout preventer |
Feb. 15, 1977 |
| 3994472 |
Annular type blowout preventer |
Nov. 30, 1976 |
| 3958808 |
Controlled closing pattern packing unit for blowout preventer |
May. 25, 1976 |
| 3939910 |
Stuffing box and blow out preventing device for polish rods of oil well pumping units |
Feb. 24, 1976 |
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