Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1991-10-23
1993-03-02
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277134, 277153, F16J 1532
Patent
active
051902990
ABSTRACT:
A radially undulating shaft seal having a seal axis and a lip of polymeric material that surrounds the shaft to be sealed. The lip is demarcated on the inside by an inner surface that tapers out in the form of a hollow cone toward the side facing away from the space being sealed; the lip also has ribs that project radially inward distributed uniformly around it. The ribs (3) consist of undulations propagated along the inner surface (2.1) parallel with the circumference. The difference between the adjacent maximal and minimal intervals (4 & 5) along the circumference between the inner surface and the axis (6) is less than 0.3 mm.
REFERENCES:
patent: 3501155 (1970-03-01), Dega et al.
patent: 3534969 (1970-10-01), Weinland
patent: 3633927 (1972-01-01), Van Deven
patent: 4427205 (1984-01-01), Holzer et al.
patent: 4750747 (1988-06-01), Holzer
Cuchlinski Jr. William A.
DePumpo Daniel G.
Firma Carl Freudenberg
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