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Class Information
Number: 277/506
Name: Seal for a joint or juncture > Seal between relatively movable parts (i.e., dynamic seal) > Circumferential contact seal for other than piston > Accommodates gyratory or oscillatory motion > Arcuate bearing surface
Description: Accommodates gyratory or oscillatory motion wherein the seal or one of the relatively movable parts has a curved bearing surface.










Sub-classes under this class:

Class Number Class Name Patents
277/507 Partially spherical 41


Patents under this class:

Patent Number Title Of Patent Date Issued
6698764 Packing assembly Mar. 2, 2004
6322081 Circumferential seal with ceramic rotor Nov. 27, 2001
5607165 Sealing system for a valve having biassed sealant under pressure Mar. 4, 1997
4911482 Ball joint Mar. 27, 1990
4582329 Sealing bearing arrangement with convex bushing ring Apr. 15, 1986
4579350 Packless stuffing box for polish rods Apr. 1, 1986
4503730 Lever control assembly Mar. 12, 1985
4345766 Apparatus for sealing an oil well pump polished rod Aug. 24, 1982
4108381 Rocket nozzle bearing seal Aug. 22, 1978











 
 
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