Brakes – Internal-resistance motion retarder – Valve structure or location
Reexamination Certificate
2007-07-10
2007-07-10
Schwartz, Christopher P. (Department: 3683)
Brakes
Internal-resistance motion retarder
Valve structure or location
Reexamination Certificate
active
10636080
ABSTRACT:
In a bottom valve apparatus in which a flow passage is formed in a bottom piece, a check valve opening and closing the flow passage is provided in one face side of the bottom piece, and a coil spring urging the check valve is fastened by a bolt and a nut which are provided in the bottom piece, a thread direction of the nut or the bolt fastening the coil spring is set to an opposite direction to a winding direction of the coil spring.
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patent: 6290035 (2001-09-01), Kazmirski
patent: 6666785 (2003-12-01), Namie et al.
patent: 1113186 (2001-07-01), None
patent: 1148268 (2001-10-01), None
patent: 222150 (1991-03-01), None
Orum & Roth LLC
Schwartz Christopher P.
Showa Corporation
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