Impact absorber

Details Impact absorber Impact absorber

1992-03-11

1993-01-26

Oberleitner, Robert J.

Spring devices

Vehicle

Mechanical spring and nonresilient retarder

267139, 293134, B60G 1308

Patent

active

051816997

ABSTRACT:
An impact absorber for an automobile bumper comprises a housing and a pair of cylinders arranged in the housing. A third cylinder having two openings at its ends is parallelly disposed between the pair of cylinders such that two gaps are defined by the walls of the pair of cylinders, the third cylinder and the housing. Apertures are formed through the walls of the pair of cylinders facing each other adjacent one end of each of the pair of cylinders for expelling damping liquid from the pair of cylinders into the gaps upon movement of the pistons in the pair of cylinders for damping the impact force. The pressure of damping liquid in the gaps forces two pistons within the third cylinder to move toward each other thereby compressing a coil spring mounted between the two pistons for further damping the impact force. The compressed air between the two pistons within the third cylinder escapes from an aperture formed through the walls of the third cylinder and the housing.

REFERENCES:
patent: 3834686 (1974-09-01), Montz et al.
patent: 4889374 (1989-12-01), Choun

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