Anti-pack out seal

Details Anti-pack out seal Anti-pack out seal

1997-07-11

1999-07-13

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

277512, 277549, 222148, 222386, F16J 1516

Patent

active

059215542

ABSTRACT:
An anti-pack out seal for use between fluid containing cylinders and pistons which are axially slideable therein and which extend through an opening in the end of such pistons. This seal has an annular channel adjacent to a resilient elastomeric seal ring, through which channel, an air stream containing an oil mist is circulated to remove solid particles of material which may separate or pack out from the fluid in the cylinder and in addition to prevent curing of the solid particles between the cylinder, the elastomeric seal and the bearing surrounding the cylinder.

REFERENCES:
patent: 3357706 (1967-12-01), Wilkinson
patent: 3943717 (1976-03-01), Schexnayder
patent: 4363357 (1982-12-01), Hunter
patent: 4474382 (1984-10-01), Hjelsand
patent: 4901888 (1990-02-01), Standlick
patent: 5135238 (1992-08-01), Wells et al.
patent: 5209495 (1993-05-01), Palmour
patent: 5403169 (1995-04-01), Yokoi et al.
patent: 5499745 (1996-03-01), Derian et al.

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