Mechanical seal without elastomers

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

Reexamination Certificate

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Details

C277S371000, C277S390000, C277S396000, C277S397000

Reexamination Certificate

active

07029012

ABSTRACT:
A seal that provides sealing between a rotatable shaft and a housing has a stationary part for connection to the housing and a rotary part for rotation with the shaft. The rotary part includes a sleeve for mounting on the shaft. One end of the sleeve is provided with a non-elastometric sealing arrangement. The sealing arrangement has sealing surfaces for contacting outer circumferential surfaces of the sleeve and the shaft as well as means for effecting sealing engagement between each of said sleeve and said shaft and a respective sealing surface.

REFERENCES:
patent: 2770477 (1956-11-01), Rankin
patent: 3162452 (1964-12-01), Tankus
patent: 3655206 (1972-04-01), Adams
patent: 4462568 (1984-07-01), Taylor et al.
patent: 4973065 (1990-11-01), Habich
patent: 5489105 (1996-02-01), Attenasio et al.
patent: 5577738 (1996-11-01), Fukuda
patent: 5794939 (1998-08-01), Parkin
patent: 5823539 (1998-10-01), Rockwood
patent: 6522708 (2003-02-01), Martin et al.
patent: 518711 (1931-02-01), None
patent: 1241210 (1967-05-01), None
patent: 04004365 (1992-04-01), None
patent: WO 01/31238 (2001-05-01), None
International Search Report for PCT/GB02/00949, Jul. 12, 2002.

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