Single seal with resilient member

Details Single seal with resilient member Single seal with resilient member

2006-10-24

2006-10-24

Pickard, Alison K. (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

C277S391000, C277S393000, C277S379000, C277S372000, C277S911000

Reexamination Certificate

active

07125019

ABSTRACT:
The invention relates to a single seal, and more specifically to a seal for a rotary shaft extending through a wall, e.g. that of a pump housing. The single seal exhibits one single sealing location between a stationary and a rotating sealing ring. The seal is attached by means of a flange (12) on to the wall in order to seal off a chamber inside the wall against the shaft (22) and towards the exterior. According to the invention, the sealing rings (1, 2) are biased against each other by means of an axially movable member (5) extending through the wall in order to increase the contact between the sealing rings (1, 2). The resilient member may be a slitted sleeve (5) or a coil spring.

REFERENCES:
patent: 2140304 (1938-12-01), Wishart
patent: 2158832 (1939-05-01), Podbielniak
patent: 2185876 (1940-01-01), Wiessner
patent: 2220814 (1940-11-01), Erbach
patent: 2470419 (1949-05-01), Voytech
patent: 2525366 (1950-10-01), Meyer
patent: 2682422 (1954-06-01), McBride
patent: 3675933 (1972-07-01), Nappe
patent: 4406462 (1983-09-01), Witten
patent: 5199719 (1993-04-01), Heinrich et al.
patent: 5538259 (1996-07-01), Uhrner et al.
patent: 5725219 (1998-03-01), Gilbert
patent: 5924698 (1999-07-01), Parkin
patent: 5947479 (1999-09-01), Ostrowski
patent: 6695315 (2004-02-01), Anderberg
patent: 0 982 518 (2000-03-01), None
patent: 8042707 (1996-02-01), None
patent: 00/20782 (2000-04-01), None
Patent Abstract of Japan of JP 8042707 dated Feb. 16, 1996.

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