Hydraulic suspension damper

Details Hydraulic suspension damper Hydraulic suspension damper

2007-06-12

2007-06-12

Schwartz, Christopher P. (Department: 3683)

Brakes

Internal-resistance motion retarder

Valve structure or location

C188S283000

Reexamination Certificate

active

11064378

ABSTRACT:
A hydraulic damper including a tube filled with working liquid which contains a slidable piston assembly attached to a piston rod. The piston assembly includes a piston having a compression valve arrangement to control the flow of working liquid passing through the piston during the compression stroke of the damper. The compression valve arrangement includes a stack of resilient deflectable disks placed on one axial side of the piston and covering compression flow passages in the piston, a spring, spring seat guide and a spring retainer, the spring mounted between the spring seat and the spring retainer. The spring biases the axially slidable spring seat against the stack of disks to normally close the compression flow passages, and the stack of disks is held by the spring seat. The spring seat guide may also be provided with rebound flow passages linked with flow passages in the piston.

REFERENCES:
patent: 5639074 (1997-06-01), Greenhill et al.
patent: 2002/0096408 (2002-07-01), Moradmand et al.
patent: 2002/0189914 (2002-12-01), Naples et al.
patent: 35 30 395 (1987-02-01), None
patent: 2 124 328 (1984-02-01), None
patent: 2314602 (1998-01-01), None
patent: 2376514 (2002-12-01), None

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