Shock absorber

Details Shock absorber Shock absorber

2006-11-09

2011-10-25

King, Bradley (Department: 3657)

Brakes

Internal-resistance motion retarder

Valve structure or location

C188S282500, C188S282600

Reexamination Certificate

active

08042661

ABSTRACT:
A shock absorber (100) for suppressing vibration in a vehicle includes a valve disk (1) that delimits the interior of a cylinder (40) in which a working fluid is sealed; a first passage (2a), a second passage (2b) and a third passage (2c), which are disposed in series so as to connect pressure chambers (41, 42) delimited by the valve disk (1); a valve body (10) that selectively opens the first passage (2a) and the second passage (2b); a biasing member (15) that biases the valve body (10) in a direction for closing the first passage (2a) against the pressure in one of the pressure chambers (42); and a bypass passage (10a) that connects the first passage (2a) to the third passage (2c) when the valve body (10), having displaced in accordance with the pressure in the one pressure chamber (42) so as to open the first passage (2a), displaces further so as to close the second passage (2b). The bypass passage (10a) is set to have a smaller flow passage area than a flow passage area when the first passage (2a) and the second passage (2b) are both open.

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