Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Reexamination Certificate
2004-07-12
2009-06-09
Patel, Vishal (Department: 3676)
Seal for a joint or juncture
Seal between relatively movable parts
Circumferential contact seal for other than piston
C277S543000, C277S580000, C277S581000
Reexamination Certificate
active
07543822
ABSTRACT:
A composite seal assembly for providing a seal between a rotating shaft and a static surface. The composite seal assembly includes first and second axially adjacent annular seal elements. The first and second seal elements each include a sealing edge contacting the shaft to provide a respective seal between the first and second seal element and the shaft. A static housing receives the first and second seal elements and engages the static surface to provide a static stationary seal, while concomitantly providing a flex region that engages the seal elements to form a dynamic seal therewith.
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Grimanis Michael P.
Kaleshian Joseph K.
A.W. Chesterton Company
Lahive & Cockfield LLP
Laurentano, Esq. Anthony A.
Patel Vishal
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