Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Reexamination Certificate
2006-02-13
2009-02-24
Patel, Vishal (Department: 3676)
Seal for a joint or juncture
Seal between relatively movable parts
Circumferential contact seal for other than piston
C277S400000
Reexamination Certificate
active
07494130
ABSTRACT:
A bi-directional dynamic seal advantageously provides for the return of captured lubricant to the lubricant side regardless of a direction of relative rotation between the seal and the shaft. The seal utilizes a pattern of symmetrical pumping elements to facilitate the hydrodynamic pumping of the captured lubricant in response to the relative rotation. The symmetrical pumping elements have ending points that stop short of the seal edge of the seal. The seal may utilize secondary pumping elements that communicate with the primary pumping elements to capture lubricant that is not captured by the primary pumping elements.
REFERENCES:
patent: 3527465 (1970-09-01), Guinard
patent: 3638957 (1972-02-01), Marsi
patent: 3984113 (1976-10-01), Bentley
patent: 3988078 (1976-10-01), Barker
patent: 4008014 (1977-02-01), Staebler
patent: 4055106 (1977-10-01), Frey
patent: 4111436 (1978-09-01), Yazawa
patent: 4118856 (1978-10-01), Bainard et al.
patent: 4119324 (1978-10-01), Denton et al.
patent: 4132421 (1979-01-01), Corsi et al.
patent: 4256208 (1981-03-01), Najer et al.
patent: 4451050 (1984-05-01), Repella
patent: 4487561 (1984-12-01), Eiermann
patent: 4501431 (1985-02-01), Peisker et al.
patent: 4822058 (1989-04-01), Butler et al.
patent: 4845828 (1989-07-01), Reed
patent: 5009583 (1991-04-01), Carlsson et al.
patent: 5118267 (1992-06-01), Dollhopf
patent: 5190440 (1993-03-01), Maier et al.
patent: 5664787 (1997-09-01), Fuse et al.
patent: 5692757 (1997-12-01), Straub
patent: 5755446 (1998-05-01), Dean et al.
patent: 5791658 (1998-08-01), Johnston
patent: 6170834 (2001-01-01), Vogt
patent: 6357325 (2002-03-01), Vogt
patent: 6409177 (2002-06-01), Johnston
patent: 6428013 (2002-08-01), Johnston et al.
patent: 0128645 (1984-12-01), None
patent: 0 447 766 (1991-09-01), None
patent: 0 286 211 (1993-08-01), None
patent: 0 657 641 (1995-06-01), None
patent: 0 432 287 (1995-10-01), None
patent: 0 564 153 (1996-07-01), None
patent: 0 771 398 (1998-10-01), None
patent: 1 026 428 (1999-12-01), None
patent: 0 792 426 (2000-06-01), None
patent: 0 684 413 (2002-02-01), None
patent: 0 879 977 (2003-05-01), None
patent: WO 96/02777 (1996-02-01), None
Freudenberg-NOK General Partnership
Harness & Dickey & Pierce P.L.C.
Patel Vishal
Wangerow Ronald W.
LandOfFree
Bi-directional pattern for dynamic seals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bi-directional pattern for dynamic seals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bi-directional pattern for dynamic seals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4105106