Vibration damper with fire safety device

Brakes – Internal-resistance motion retarder – Including seal or guide

Reexamination Certificate

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Details

C267S120000

Reexamination Certificate

active

10820372

ABSTRACT:
A piston rod and a piston are installed with freedom of axial movement in a cylinder filled with a working medium, the piston dividing the working space into a space on the piston-rod side of the piston and a space on the side of the piston facing away from the piston rod. A stop disk is mounted on the piston rod in addition to the piston rests against a retainer provided on the cylinder to limit the outward movement of the piston rod during a fire.

REFERENCES:
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patent: 4263488 (1981-04-01), Freitag et al.
patent: 4548389 (1985-10-01), Smith et al.
patent: 5115892 (1992-05-01), Yamaoka et al.
patent: 5454455 (1995-10-01), Kundmüller et al.
patent: 5615756 (1997-04-01), Grundei et al.
patent: 5799759 (1998-09-01), Koch
patent: 5810130 (1998-09-01), Mc Candless
patent: 5862893 (1999-01-01), Volpel
patent: 6153285 (2000-11-01), Christel et al.
patent: 77 03 395 (1977-09-01), None
patent: 38 26 862 (2002-09-01), None
patent: 2156945 (1985-10-01), None

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