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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 |
| 4678209 |
Casing hanger |
Jul. 7, 1987 |
| 4673034 |
Cased water wells having flexible pad |
Jun. 16, 1987 |
| 4665976 |
Fluid deflection shield assembly |
May. 19, 1987 |
| 4658894 |
Well head pipe stripper |
Apr. 21, 1987 |
| 4646845 |
Metal seal for wellhead apparatus |
Mar. 3, 1987 |
| 4630833 |
Molded ring seal with end support rings |
Dec. 23, 1986 |
| 4616857 |
Bi-directional self-retaining cylindrical surface seal |
Oct. 14, 1986 |
| 4610319 |
Hydrodynamic lubricant seal for drill bits |
Sep. 9, 1986 |
| 4600054 |
Tubing hanger assembly |
Jul. 15, 1986 |
| 4593914 |
Wellhead sealing system |
Jun. 10, 1986 |
| 4585256 |
Side feed water swivel |
Apr. 29, 1986 |
| 4579350 |
Packless stuffing box for polish rods |
Apr. 1, 1986 |
| 4576385 |
Fluid packing assembly with alternating diverse seal ring elements |
Mar. 18, 1986 |
| 4557489 |
Pressure balanced seal |
Dec. 10, 1985 |
| 4557625 |
Internal sealing assembly |
Dec. 10, 1985 |
| 4532952 |
Controller for well installations |
Aug. 6, 1985 |
| 4531749 |
Circular seal with integral backup rings |
Jul. 30, 1985 |
| 4526243 |
Drilling head |
Jul. 2, 1985 |
| 4524982 |
Seal for aggressive environments |
Jun. 25, 1985 |
| 4512410 |
Geothermal expansion wellhead system |
Apr. 23, 1985 |
| 4494749 |
Seal assemblies |
Jan. 22, 1985 |
| 4483545 |
Fire resistant connections and double ribbed sealing means therefor |
Nov. 20, 1984 |
| 4479656 |
Means for sealing a gap around a conductor pipe in an offshore oil platform |
Oct. 30, 1984 |
| 4477093 |
Fire resistant connections and T-like sealing means therefor |
Oct. 16, 1984 |
| 4477092 |
Fire resistant connections and dovetail-like sealing means therefor |
Oct. 16, 1984 |
| 4477091 |
Fire resistant connections and U-like sealing means therefor |
Oct. 16, 1984 |
| 4477085 |
Fire resistant connections embodying heat transfer means |
Oct. 16, 1984 |
| 4476924 |
Grease injection control head having a specific gas trap |
Oct. 16, 1984 |
| 4471965 |
High-pressure fire-resistant metal seal |
Sep. 18, 1984 |
| 4458903 |
Control line sealing connection |
Jul. 10, 1984 |
| 4455040 |
High-pressure wellhead seal |
Jun. 19, 1984 |
| 4449695 |
Fire safe plug valve |
May. 22, 1984 |
| 4423776 |
Drilling head assembly |
Jan. 3, 1984 |
| 4416340 |
Rotary drilling head |
Nov. 22, 1983 |
| 4411434 |
Fluid sealing assembly for a marine riser telescopic slip joint |
Oct. 25, 1983 |
| 4407514 |
Wellhead casing packing support |
Oct. 4, 1983 |
| 4390186 |
Metal-to-metal ribbed seal |
Jun. 28, 1983 |
| 4384730 |
Seal assembly |
May. 24, 1983 |
| 4383577 |
Rotating head for air, gas and mud drilling |
May. 17, 1983 |
| 4381114 |
Packoff and seal ring assembly with injected plastic packing |
Apr. 26, 1983 |
| 4363357 |
Rotary drilling head |
Dec. 14, 1982 |
| 4349205 |
Annulus sealing device with anti-extrusion rings |
Sep. 14, 1982 |
| 4321975 |
Slurry diverter |
Mar. 30, 1982 |
| 4307889 |
Apparatus utilizing rotary motion of a member as the motive force for a pump |
Dec. 29, 1981 |
| 4304310 |
Drilling head |
Dec. 8, 1981 |
| 4302018 |
Packer arrangements for oil wells and the like |
Nov. 24, 1981 |
| 4291768 |
Packing assembly for wellheads |
Sep. 29, 1981 |
| 4281724 |
Drilling head |
Aug. 4, 1981 |
| 4262759 |
Combination seal and pressure relief valve for sealed drill string unit |
Apr. 21, 1981 |
| 4214764 |
Axial-type sealing device arranged to provide the seal between a stationary and a rotatable element |
Jul. 29, 1980 |
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