Gas spring for motor vehicle with retaining drive for preventing

Details Gas spring for motor vehicle with retaining drive for preventing Gas spring for motor vehicle with retaining drive for preventing

1983-04-18

1988-10-25

Butler, Douglas C.

Spring devices

Fluid

Expansible-contractible chamber device

188300, 267 6412, 267124, 292338, 296189, 296 76, E05F 514, E05F 706, E05D 1700, F16F 902, B62D 2512

Patent

active

047798459

ABSTRACT:
In the illustrative embodiment of the invention as described an engine bonnet is articulated to the framework of a motor car. A gas spring is articulated to both the framework and the bonnet. The gas spring balances part of the weight of the bonnet when the bonnet is to be opened by hand. In case of an accident the framework and/or the bonnet may be crushed in longitudinal direction of the car. In such case the piston rod of the gas spring is pushed inward of the cylinder beyond the normal innermost operational position and a retaining device becomes effective so as to prevent the piston rod from returning towards its outermost operational position.

REFERENCES:
patent: 3883126 (1975-05-01), Nicholls
patent: 3963101 (1976-06-01), Stadelmann et al.
patent: 4070050 (1978-01-01), Glock et al.
patent: 4078779 (1978-03-01), Molders
patent: 4118131 (1978-10-01), Schnitzins
patent: 4156523 (1979-05-01), Bauer
patent: 4240619 (1980-12-01), Wirges et al.
patent: 4307874 (1981-12-01), Reuschenbach et al.
patent: 4309027 (1982-01-01), Molders et al.
patent: 4452437 (1984-06-01), Lochner
patent: 4595182 (1986-06-01), Freitag et al.
patent: 4634170 (1987-01-01), Lach
patent: 4702463 (1987-10-01), Krautkramer
patent: 4723765 (1988-02-01), Pearson

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