Pneumatic shock absorber

Details Pneumatic shock absorber Pneumatic shock absorber

1988-11-30

1991-12-03

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Position of thrust member relative to chamber

188299, 267 6416, F16F 950

Patent

active

050693174

ABSTRACT:
A pneumatic shock absorber has a piston rod extending out of its cylinder whose pressure space adjacent to the piston is connected via an inlet check valve. An outlet valve to let off compressed air during damping motion of the piston has a valve piston running in a valve chamber which it divides into two chamber parts. The first chamber part connects a duct leading to the pressure space with an outlet valve. This connection may be interrupted by the end face of the valve piston acted on at least in part by the pressure in the pressure space of the absorber and cooperating with a valve seat. The second chamber part is connected with the pressure space or with the pressure source. There is a spring urging the valve piston towards the valve seat. As a result there are not losses in pressure in the two abutment positions and the damping effect is very even and continuous.

REFERENCES:
patent: 1036340 (1912-08-01), Rockwell et al.
patent: 1486911 (1924-03-01), Messier
patent: 2767601 (1956-10-01), Reed
patent: 3913460 (1975-10-01), Wright
patent: 3960251 (1976-06-01), Gorissen
patent: 4506751 (1985-03-01), Stephens
patent: 4585205 (1986-04-01), Coppola et al.
patent: 4700611 (1987-10-01), Kaneko
patent: 4730816 (1988-03-01), Eckert

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