Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Reexamination Certificate
2007-05-22
2007-05-22
Pickard, Alison K. (Department: 3673)
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
C277S375000, C277S384000, C277S385000, C277S366000, C277S368000
Reexamination Certificate
active
11046742
ABSTRACT:
The invention provides a seal for a rotatable shaft. The seal includes an inner case mountable to the shaft and having a body and first and second flanges extending radially outward from the body. The seal includes first and second sealing discs operable to seal against the first and second flanges of the inner case. The sealing discs are immovably associated with a housing spaced from the shaft. A spring encircles the shaft and inner case to urge the sealing discs against the flanges. The spring rate of the spring is controlled to enhance sealing, reduce turning torque, and extend life of the seal.
REFERENCES:
patent: 1956366 (1934-04-01), Vedovell
patent: 2592494 (1952-04-01), Ullmann
patent: 3009717 (1961-11-01), Laser
patent: 3799559 (1974-03-01), Kayser
patent: 3972536 (1976-08-01), Warner et al.
patent: 4348031 (1982-09-01), Johnston
patent: 4417734 (1983-11-01), Sundberg
patent: 4462600 (1984-07-01), Johnston
patent: 4522410 (1985-06-01), Holzer
patent: 4989882 (1991-02-01), Warner et al.
patent: 5009519 (1991-04-01), Tatum
patent: 5251914 (1993-10-01), Tatum
patent: 6059293 (2000-05-01), Azibert et al.
patent: 6068263 (2000-05-01), Azibert et al.
patent: 6116609 (2000-09-01), Azibert
patent: 6120034 (2000-09-01), Kowalski et al.
patent: 6131912 (2000-10-01), Azibert et al.
patent: 6142476 (2000-11-01), Iwane
patent: 6155572 (2000-12-01), Wu et al.
patent: 6386547 (2002-05-01), Wu et al.
patent: 2001/0010416 (2001-08-01), Wu et al.
patent: 2002/0096835 (2002-07-01), Azibert et al.
Mormile David G.
Vinton Mark D.
Dickinson Wright PLLC
Federal-Mogul World Wide Inc.
Pickard Alison K.
Stearns Robert L.
LandOfFree
Spring supported dual element face seal with a run surface... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spring supported dual element face seal with a run surface..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spring supported dual element face seal with a run surface... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3820056