Brakes – Internal-resistance motion retarder – Valve structure or location
Reexamination Certificate
2011-07-19
2011-07-19
Burch, Melody M (Department: 3657)
Brakes
Internal-resistance motion retarder
Valve structure or location
C188S282500, C188S316000
Reexamination Certificate
active
07980368
ABSTRACT:
A damping force variable shock absorber is provided, which is configured to prevent a ring disc of a damping force variable valve from being excessively bent without increasing the thickness of the ring disc. The damping force variable shock absorber includes a damping force variable valve controlled in a pilot control manner by operating a solenoid. The damping force variable valve includes a disc valve and a pilot chamber provided in a housing to vary damping force. The disc valve includes a main disc, a pilot disc-S provided adjacent to the main disc in the rear thereof, and a ring disc having an outer periphery supported on a supporting portion of the housing. A spacer disc is inserted between the main disc and the pilot disc-S, the spacer disc having an outer diameter smaller than an outer diameter of an arc-shaped slot of the ring disc.
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Burch Melody M
Mando Corporation
McDermott Will & Emery LLP
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