Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Reexamination Certificate
2011-04-26
2011-04-26
Bomar, Shane (Department: 3676)
Seal for a joint or juncture
Seal between relatively movable parts
Circumferential contact seal for other than piston
C277S568000, C277S571000
Reexamination Certificate
active
07931278
ABSTRACT:
There is described a seal assembly for sealing the gap between a rotary member and a fixed member, so as to prevent passage of a fluid from a first to a second environment located on opposite sides of the gap; the seal assembly has a first ring integral with the rotary member, a second ring integral with the fixed member, and an elastically deformable sealing member integral with the second ring and in turn having at least one lip cooperating in fluidtight manner with a mating portion of the first ring; and, on the side cooperating with the mating portion, the sealing member has a spiral groove which, in use, produces a fluid-dynamic pumping effect to pump the fluid away from the sealing area and towards the first environment.
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European Search Report, completed Oct. 11, 2004.
Krulis Filip
Vignolo Francesco
Bomar Shane
Corcos Industriale S.A.S. di Externa Italia S.R.L
Lee Gilbert Y
Serbin David J
WRB-IP LLP
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