Seal with pyramid shaped formation

Details Seal with pyramid shaped formation Seal with pyramid shaped formation

2011-05-31

2011-05-31

Patel, Vishal (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Diverse and distinct dynamic seals

C277S551000, C277S572000

Reexamination Certificate

active

07950670

ABSTRACT:
A seal assembly having a seal bumper wall with a series of pyramid shaped formations lying on the bumper wall. The formations cause their apex portion to wear down rapidly in use, while the remainder of the pyramids remain and act as slingers and/or produce a convection effect to reduce temperature along the sealed area. In another embodiment, there are two each pyramid shaped formations located on each of several thrust bumpers, which are held in position by a retainer.

REFERENCES:
patent: 3658841 (1972-04-01), Fried
patent: 4906009 (1990-03-01), Saitoh
patent: 4936591 (1990-06-01), Romero
patent: 5201528 (1993-04-01), Upper
patent: 5997005 (1999-12-01), Gold et al.
patent: 6733917 (2004-05-01), Janmey
patent: 6851676 (2005-02-01), Martins et al.
patent: 7396016 (2008-07-01), Liao et al.

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