Bumper supporting energy absorber for vehicles

Details Bumper supporting energy absorber for vehicles Bumper supporting energy absorber for vehicles

1978-08-30

1980-04-29

Peters, Jr., Joseph F.

Vehicle fenders

Buffer or bumper type

Bumper having impact force absorbing means directly...

267 9B, B60R 1908

Patent

active

042003180

ABSTRACT:
The energy absorber housing is fixed to the vehicle frame and contains a cylindrical capsule of urethane or other resilient energy-absorbing material. An elongated stepped diameter cylindrical plunger extending inwardly from the bumper has its small diameter portion projecting through a central passage in the capsule. On impact of the bumper the capsule dissipates impact energy by radial deflection as the large diameter portion of the plunger moves into the capsule in response to impact induced movement of the bumper. On removal of the impact load, the capsule recovers to its original shape at a predetermined slow rate and with a force of recovery that acts on a conical wall surface between the two diameter portions of the plunger to return the plunger and the bumper assembly to their original positions.

REFERENCES:
patent: 1439209 (1922-12-01), Watson
patent: 3788626 (1974-01-01), Isaacson
patent: 3948497 (1976-04-01), Lovitt

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