Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Reexamination Certificate
2005-01-11
2005-01-11
Sandy, Robert J. (Department: 3676)
Seal for a joint or juncture
Seal between relatively movable parts
Circumferential contact seal for other than piston
C277S549000, C277S560000, C277S562000, C277S572000
Reexamination Certificate
active
06840521
ABSTRACT:
The face pressure of a seal lip for sealing is made sharp to improve the sealing ability and the seal lip is prevented from being deformed abnormally when a shaft is inserted therein. In the constitution, the inside diameter of the corner face of the sealing face is smaller than the outside diameter of the shaft. When the outside surface of the support section of the support ring expands the expandable inner surface, the inside diameter of the sealing face is also expanded diametrically to closely contact the corner face of the sealing face with the shaft.
REFERENCES:
patent: 5083802 (1992-01-01), Shimasaki et al.
patent: 6367810 (2002-04-01), Hatch
patent: 6517082 (2003-02-01), Yamada et al.
patent: 6517083 (2003-02-01), Yamada et al.
patent: 6543786 (2003-04-01), Osumi et al.
patent: 6565096 (2003-05-01), Ikeda et al.
Arent Fox
Eagle Industry Co. Ltd.
Reavey Enoch
LandOfFree
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