Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Reexamination Certificate
2005-02-22
2005-02-22
Pickard, Alison K. (Department: 3676)
Seal for a joint or juncture
Seal between relatively movable parts
Circumferential contact seal for other than piston
C277S558000
Reexamination Certificate
active
06857637
ABSTRACT:
A rotation shaft seal disposed between a housing and a rotation shaft, and provided with a seal member of rubber having a lip end portion which extends as to diminish in diameter to a fluid storing chamber side, wherein the lip end portion has a contact portion which contacts a surface of the rotation shaft and an end face which is facing the rotation shaft, and a concave portion, generating a component of force in diameter direction to raise the lip end portion outward in the diameter direction when receiving pressure in the fluid storing chamber, is formed on the end face.
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Hosokawa Atsushi
Kaneshige Yuji
Nagaoka Hideo
Yamada Takeshi
Armstrong Kratz Quintos Hanson & Brooks, LLP
Kabushiki Kaisha Toyoda Jidoshokki
Mitsubishi Cable Industries Ltd.
Pickard Alison K.
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