Frequency dependant damper

Details Frequency dependant damper Frequency dependant damper

1998-09-24

2000-11-21

Mar, Michael

Brakes

Internal-resistance motion retarder

Thrust member or piston structure

188317, 1882826, F16F 900

Patent

active

061489697

ABSTRACT:
A gas shock absorber has a pressure tube which defines a working chamber. A piston divides the working chamber into an upper working chamber and a lower working chamber. A series of extension passages extend through the piston and are always left open. A series of compression passages extend through the piston and are opened and closed by a compression valve assembly. A rod guide assembly is located between the pressure tube and a piston rod. The rod guide assembly includes an oil chamber for sealing and lubricating the piston rod.

REFERENCES:
patent: 3078965 (1963-02-01), De Carbon et al.
patent: 3088556 (1963-05-01), De Carbon
patent: 3113644 (1963-12-01), Wossner
patent: 3134460 (1964-05-01), De Carbon
patent: 3856287 (1974-12-01), Freitag
patent: 4360192 (1982-11-01), Ishida
patent: 4948104 (1990-08-01), Wirges
patent: 5374077 (1994-12-01), Penzotti et al.

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