Energy absorbing unit with improved control valve

Details Energy absorbing unit with improved control valve Energy absorbing unit with improved control valve

1975-11-17

1977-08-30

Halvosa, George E. A.

Spring devices

Resilient shock or vibration absorber

Bumper

13751215, 137859, 188282, 188314, 267 64R, 293 70, 293DIG2, F16F 922, F16F 934

Patent

active

040450090

ABSTRACT:
A telescoping energy absorbing unit having inner and outer telescoping cylinders with unitary fluid flow control valve means operatively disposed between contractible and expansible fluid chambers in the unit. The valve progressively opens with increasing loads above a predetermined load to control the flow of fluid from a first of the chambers to a second of the chambers for absorbing impact energy. The valve closes on rebound and has openings therein that meter fluid from the second to the first chamber to reduce the speed of rebound of the cylinders from a telescoped toward an extended position.

REFERENCES:
patent: RE20084 (1936-09-01), Blake
patent: 1988194 (1935-01-01), Erlandsen, Jr.
patent: 2348160 (1944-05-01), Thornhill
patent: 2937658 (1960-05-01), Stewart
patent: 3139989 (1964-07-01), Thornhill
patent: 3593978 (1971-07-01), Lohr
patent: 3794310 (1974-02-01), Mewhinney
patent: 3837445 (1974-09-01), Pierle
patent: 3904182 (1975-09-01), Allinquant et al.
patent: 3920274 (1975-11-01), Fannin

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