Valve stem seal

Details Valve stem seal Valve stem seal

1990-07-03

1991-07-16

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

251214, 277102, 277125, 277205, 277207R, 277211, 277236, F16J 1520, F16J 1528, F16J 1532

Patent

active

050319230

ABSTRACT:
The present invention relates to an improved metal-to-metal seal for a moving stem of a valve and includes a U-shaped ring having a base, an inner leg extending from the inner portion of the base and an outer leg extending from the outer portion of the base. The sealing surface of each leg is flattened and in its free position has a slight angle with respect to the axis of the seal. Each of the legs includes a support enlargement on its sealing side at a point toward the base from the sealing surface and preferably at the position of maximum deflection of the leg. The diameter of such supports is preselected so that in its free state they each are spaced a short distance from the walls against which their leg seals. The end of the outer leg is turned inwardly at an angle.

REFERENCES:
patent: 3279806 (1966-10-01), Bialkowski
patent: 3288472 (1966-11-01), Watkins
patent: 3527507 (1970-09-01), Clark et al.
patent: 3653670 (1972-04-01), Sifri et al.
patent: 4345771 (1982-08-01), Hasegawa et al.
patent: 4371177 (1983-02-01), Bahr
patent: 4565380 (1986-01-01), Newman et al.
patent: 4576385 (1986-03-01), Ungchusri et al.
patent: 4630636 (1986-12-01), Cutcher
patent: 4658847 (1987-04-01), McCrone

Affiliated with

Also associated with

Rating

Valve stem seal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve stem seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve stem seal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-125693