Seal for a joint or juncture – Seal between relatively movable parts – Diverse and distinct dynamic seals
Patent
1998-01-30
2000-04-18
Knight, Anthony
Seal for a joint or juncture
Seal between relatively movable parts
Diverse and distinct dynamic seals
277560, 277569, F16J 1532, F16J 15447
Patent
active
060505702
ABSTRACT:
A seal for separating a viscous lubricant, such as grease, from contaminants in the surrounding environment, includes case having axial and radial walls, a shield located in the case and also having axial and radial walls, a primary seal element attached to the radial wall of the case and establishing two fluid barriers along the axial wall of the shield, and a secondary seal element attached to the radial wall of the shield and establishing another fluid barrier along the axial wall of the case. The primary seal element includes a labyrinth which is spaced slightly away from the axial wall of the shield and contains pumping cavities which drive the lubricant away from the primary seal element when relative rotation exists between the primary seal element and the shield. The primary seal element also has a contact lip provided with inside and outside beveled surfaces which converge toward a band along which the contact lip bears against the axial wall of the shield. The primary seal element is for the most part molded from an elastomer, but it contains an insert having a higher modulus of elasticity than that of the elastomer. The inside beveled surface, which is presented toward the labyrinth, lies along the insert as does the adjoining region of the band. The outside beveled surface lies along the elastomer as does the adjoining region of the band. The seal is particularly effective under frigid conditions when grease may not migrate to the band on the contact lip to lubricate it.
REFERENCES:
patent: 2804324 (1957-08-01), Stallings
patent: 2932535 (1960-04-01), Peickii et al.
patent: 3495843 (1970-02-01), Andersent et al.
patent: 3523692 (1970-08-01), Otto
patent: 3838862 (1974-10-01), Fern
patent: 4171561 (1979-10-01), Bainard et al.
patent: 4239243 (1980-12-01), Bainard et al.
patent: 4300777 (1981-11-01), Symons
patent: 4311316 (1982-01-01), Cather, Jr.
patent: 4613143 (1986-09-01), Butler
patent: 4667968 (1987-05-01), Nash et al.
patent: 4770548 (1988-09-01), Otto
patent: 4822058 (1989-04-01), Butler et al.
patent: 4867926 (1989-09-01), Matsushima
patent: 4969653 (1990-11-01), Breen
patent: 5013052 (1991-05-01), Butler et al.
patent: 5022659 (1991-06-01), Otto
patent: 5129744 (1992-07-01), Otto et al.
patent: 5458420 (1995-10-01), Otto
patent: 5577741 (1996-11-01), Sink
patent: 5813675 (1998-09-01), Otto
patent: 5887875 (1999-03-01), Salciccioli et al.
Beres John L.
Knight Anthony
The Timken Company
LandOfFree
Seal with bi-modulus lip does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Seal with bi-modulus lip, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seal with bi-modulus lip will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2330629