Telescoping energy absorber with elastomeric pressure relief val

Details Telescoping energy absorber with elastomeric pressure relief val Telescoping energy absorber with elastomeric pressure relief val

1976-08-13

1977-10-18

Blix, Trygve M.

Vehicle fenders

Double-ender interconnected

213223, 267 64R, 267116, 293DIG2, 293 89, B60R 1902

Patent

active

040543129

ABSTRACT:
This energy absorber has an inner cylinder telescopically mounted in an outer cylinder and carries a cylinder cap separating cylinder interspace into a pair of contractible and expandable pressure chambers filled with a hydraulic fluid. On impact, the cylinders telescope and a one-piece elastomeric valve controls the flow of fluid between chambers through an orifice in the cylinder cap. The valve is a variable rate spring having a relatively constant force/deflection characteristic to control oil flow while providing high efficiency pressure relief action. Gas spring means provides the motive force to return the unit to an extended position after removal of the impact load.

REFERENCES:
patent: 3343566 (1967-09-01), Luckenbill
patent: 3498321 (1970-03-01), Barrett et al.
patent: 3547355 (1970-12-01), Salazar
patent: 3722874 (1973-03-01), Kress
patent: 3814219 (1974-06-01), Fannin et al.
patent: 3820771 (1974-06-01), Kerr et al.
patent: 3920274 (1975-11-01), Fannin

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