Seal between relatively movable parts (i.e., dynamic seal) > Circumferential contact seal for other than piston > Accommodates gyratory or oscillatory motion > Arcuate bearing surface > Patents

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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