Shock absorber with adjustable spring load

Details Shock absorber with adjustable spring load Shock absorber with adjustable spring load

1978-02-21

1979-06-26

Halvosa, George E. A.

Spring devices

Vehicle

Bolster

60481, 1376302, 180 32, 267177, 280710, 280724, 417443, F16F 944, F16F 1300

Patent

active

041591054

ABSTRACT:
A device for modifying a shock absorber so that the preload of the shock absorber spring may be adjusted. The device has a chamber member having a cylindrical inner member with an inside diameter slightly larger than the outside diameter of the shock absorber body. The chamber also has a cylindrical outer member sealingly attached at the upper end to the inner member. A piston is slidingly positioned in the chamber between the outer and inner cylinders and the piston forms a seat for the shock absorber spring. Hydraulic fluid is pumped into the chamber and by the addition of hydraulic fluid the spring of the shock absorber is compressed and the amount of preload between the shock absorber's relatively moveable parts is thereby increased.

REFERENCES:
patent: 2254084 (1941-08-01), Nilson
patent: 2815731 (1957-12-01), Curtis
patent: 2892636 (1959-06-01), Walker
patent: 3331599 (1967-07-01), Polhemus et al.
patent: 3385589 (1968-05-01), Erdmann
patent: 3628810 (1971-12-01), Graef

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