Hydrodynamic rotary seal

Details Hydrodynamic rotary seal Hydrodynamic rotary seal

2006-05-30

2006-05-30

Lee, Jong-Suk (James) (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

C277S559000

Reexamination Certificate

active

07052020

ABSTRACT:
A hydrodynamically lubricating rotary seal for partitioning a lubricant from an environment has a generally circular seal body, a sloping dynamic sealing lip, and an energizer. The dynamic sealing lip is provided for establishing compressed sealing relation with a relatively rotatable surface, and has a sloping dynamic sealing surface that varies in width, and also has a hydrodynamic inlet curvature that varies in position around the circumference of the seal. When the seal is installed against a relatively rotatable surface, the dynamic sealing lip deforms to define a variable width interfacial contact footprint against the relatively rotatable surface that is wavy on the lubricant side, and wedges a film of lubricating fluid into the interface in response to relative rotation. The environment edge of the interfacial contact footprint is substantially circular, and therefore does not produce a hydrodynamic wedging action in response to relative rotation.

REFERENCES:
patent: 2679441 (1954-05-01), Stillwagon
patent: 2934368 (1960-04-01), Adamson
patent: 3342500 (1967-09-01), Knudson
patent: 3627337 (1971-12-01), Pippert
patent: 3851888 (1974-12-01), Limpson et al.
patent: 3901517 (1975-08-01), Heathcott
patent: 3929340 (1975-12-01), Peisker
patent: 3942806 (1976-03-01), Edlund
patent: 4013299 (1977-03-01), Scott
patent: 4053163 (1977-10-01), Vegella
patent: 4067407 (1978-01-01), Berg
patent: 4094519 (1978-06-01), Heyn et al.
patent: 4141563 (1979-02-01), Wu
patent: 4174846 (1979-11-01), Scott
patent: 4193606 (1980-03-01), Iverson
patent: 4288083 (1981-09-01), Braconier
patent: 4328972 (1982-05-01), Albertson et al.
patent: 4387902 (1983-06-01), Conover
patent: 4410189 (1983-10-01), Myers et al.
patent: 4441722 (1984-04-01), Pichler
patent: 4484753 (1984-11-01), Kalsi
patent: 4610319 (1986-09-01), Kalsi
patent: 4789166 (1988-12-01), Rericha et al.
patent: 4917390 (1990-04-01), Lee et al.
patent: 5002289 (1991-03-01), Yasui et al.
patent: 5190299 (1993-03-01), Johnston
patent: 5230520 (1993-07-01), Dietle et al.
patent: 5431415 (1995-07-01), Millonig et al.
patent: 5482296 (1996-01-01), Peppiatt et al.
patent: 5678829 (1997-10-01), Kalsi et al.
patent: 5738358 (1998-04-01), Kalsi et al.
patent: 5873576 (1999-02-01), Dietle et al.
patent: 6007105 (1999-12-01), Dietle et al.
patent: 6036192 (2000-03-01), Dietle et al.
patent: 6105968 (2000-08-01), Yeh et al.
patent: 6109618 (2000-08-01), Dietle
patent: 6120036 (2000-09-01), Kalsi et al.
patent: 6139020 (2000-10-01), Friend et al.
patent: 6315302 (2001-11-01), Conroy et al.
patent: 6767016 (2004-07-01), Gobeli et al.
patent: 2145548 (1995-02-01), None
patent: WO 00/65257 (2000-11-01), None
patent: WO 00/65258 (2000-11-01), None
patent: WO 00/65259 (2000-11-01), None

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