Rotation damper with valve

Details Rotation damper with valve Rotation damper with valve

2001-08-22

2008-12-30

Rodriguez, Pam (Department: 3683)

Brakes

Internal-resistance motion retarder

Valve structure or location

C188S322190, C188S322200

Reexamination Certificate

active

07469776

ABSTRACT:
A rotation damper for a vehicle that runs on rails, having piston and cylinder parts moving with respect to one another. This damper has a friction characteristics, that is to say the fluid connection over the piston is not a permanently open hole but exclusively comprises spring-loaded valves. In order to facilitate the installation of such dampers, it is proposed to make a separate connection between the working cylinder and the reservoir in which a valve that can be manually operated is arranged, which valve, on operation, opens a connection as a result of which the piston and cylinder can be moved relative to one another under manual force.

REFERENCES:
patent: 3127958 (1964-04-01), Szostak
patent: 5251927 (1993-10-01), Charles et al.
patent: 5462140 (1995-10-01), Cazort et al.
patent: 6334516 (2002-01-01), Shirley et al.
patent: 2159234 (1985-11-01), None

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