Valve shaft seal

Details Valve shaft seal Valve shaft seal

2005-04-12

2005-04-12

Jacyna, J. Casimer (Department: 3754)

Valves and valve actuation

Biased valve

Springs and spring retainers

C277S502000, C123S190170

Reexamination Certificate

active

06877719

ABSTRACT:
A valve shaft seal includes a reinforcing ring having a cylindrical section extending over a certain axial length and possessing an outer diameter, a sealing element disposed on the reinforcing ring, and a valve spring supported on a radially extending end section of the reinforcing ring. To support the valve spring on the radially extending end section of the reinforcing ring, the radially extending end section extends radially farther inward in the direction of the axis of the valve shaft seal than the outer diameter of the cylindrical section of the reinforcing ring.

REFERENCES:
patent: 1218730 (1917-03-01), Wettrich et al.
patent: 4317436 (1982-03-01), Barnhart et al.
patent: 5174256 (1992-12-01), Binford
patent: 6244235 (2001-06-01), Hegemier et al.
patent: 3902518 (1989-01-01), None
patent: 0 392 893 (1990-10-01), None
patent: 0 645 524 (1995-03-01), None
patent: 2004-176881 (2004-06-01), None

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