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Class Information
Number: 277/329
Name: Seal for a joint or juncture > Seal for well apparatus > Longitudinally actuated packer for above ground apparatus > Contained or compressed by gland member in packing box
Description: Longitudinally actuated packer wherein the seal is intended for use in a well apparatus having a chamber including an axially opened end to receive the seal and a member that substantially closes the open end to retain or squeeze the seal within the chamber while having an opening for passage for one of the parts.










Sub-classes under this class:

Class Number Class Name Patents
277/330 For line or cable 19


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8366114 Stuffing box cooling system Feb. 5, 2013
8205670 Metal annulus seal Jun. 26, 2012
7874369 Progressive cavity pump (PCP) drive head stuffing box with split seal Jan. 25, 2011
7562702 Drain cap stuffing box Jul. 21, 2009
7401645 Downhole fluid disposal apparatus and methods Jul. 22, 2008
6739390 Articulated seal May. 25, 2004
6705615 Sealing system and method Mar. 16, 2004
6502827 Sealing device and a method of repairing/replacing sealing devices Jan. 7, 2003
6478303 Sealing ring packing Nov. 12, 2002
6439302 Stripper packer Aug. 27, 2002
6412783 Self aligning stuffing box for pumpjacks Jul. 2, 2002
6394461 Pressure compensated stuffing box for reciprocating pumping units May. 28, 2002
6371487 Gimbal and seal for the drivehead of a downhole rotary pump Apr. 16, 2002
6167959 Adjustable stuffing boxes for pump rods Jan. 2, 2001
5791411 Wellhead stuffing box for rotating rod string Aug. 11, 1998
5755372 Self monitoring oil pump seal May. 26, 1998
5711533 Oilfield stuffing box with polished rod alignment Jan. 27, 1998
5636688 Self aligning stuffing box for pumpjack units Jun. 10, 1997
5622371 Stuffing box with improved packing rings and method Apr. 22, 1997
5577737 Method and apparatus for establishing and maintaining a fluid seal around a polishing rod Nov. 26, 1996
5538080 Self aligning stuffing box for pumpjack units Jul. 23, 1996
5343944 Self aligning stuffing box for pumpjack units Sep. 6, 1994
5342066 Non-extrusion device for split annular casing/tubing hanger compression seals Aug. 30, 1994
5257812 Polished rod protection and sealing device Nov. 2, 1993
5245860 Sensor for detection of oil leaks and oil quality in stuffing box of walking beam pump system Sep. 21, 1993
5217068 Stuffing box Jun. 8, 1993
5148699 Stuffing box leak detector Sep. 22, 1992
5137083 Wellhead stuffing box for polished rod and accessories for same Aug. 11, 1992
5103915 Wellhead housing seal assembly for damaged sealing surfaces Apr. 14, 1992
5058668 Rod guide bearing assembly for oil well pumping apparatus Oct. 22, 1991
5044672 Metal-to-metal sealing pipe swivel joint Sep. 3, 1991
4981174 Leakproof stuffing box with external lubrication for polish rod Jan. 1, 1991
4917190 Oil well blowout containment system Apr. 17, 1990
4913464 Tubular joint with seal Apr. 3, 1990
4900071 Undersea hydraulic coupling with dovetail seal Feb. 13, 1990
4781387 Metal to metal subsea casing hanger seal Nov. 1, 1988
4655284 Well head shut-off device Apr. 7, 1987
4647050 Stuffing box for a sucker rod pump assembly Mar. 3, 1987
4613140 Self-aligning lubricating stuffing box Sep. 23, 1986
4522368 Closure device Jun. 11, 1985
4480842 Self-aligning stuffing box Nov. 6, 1984
4384726 Expandable lubricating packing assembly for wellheads May. 24, 1983
4360186 Swivel joint Nov. 23, 1982
4356997 Flow control mechanism for high pressure wells Nov. 2, 1982
4350346 Heat resistant seal Sep. 21, 1982
4345766 Apparatus for sealing an oil well pump polished rod Aug. 24, 1982
4299395 Geothermal well head assembly Nov. 10, 1981
4192517 Anti-scale stuffing box improvement Mar. 11, 1980
4138144 Wellhead sealing assembly Feb. 6, 1979
4017214 Packing gland leak retriever device Apr. 12, 1977

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