Land vehicles – Wheeled – Running gear
Patent
1986-06-09
1987-12-08
Love, John J.
Land vehicles
Wheeled
Running gear
267195, 267286, B60G 1142
Patent
active
047114630
ABSTRACT:
An upper mount assembly for a suspension strut which incorporates an elastomer bushing operatively connecting the piston rod to support structure that works in shear over initial travel but has compression load buildup at the limit of mount travel. The mount assembly is a unitized multi-element construction having a jounce bumper to provide a load path for suspension spring assist and a load deflection curve to improve suspension characteristics. In this invention, load buildup is achieved in jounce and rebound with the use of a rate washer which is moved upwardly by the strut in jounce movement. Initial travel works the bushing in shear but the elastomer becomes compressed between the washer and an outside metal wall to provide increasing spring rate. When the rod moves vertically downwardly in rebound, the washer controls the load buildup and compresses the upper portion of the jounce bumper for soft entry into rebound.
REFERENCES:
patent: 4175770 (1979-11-01), Draisbach et al.
patent: 4235426 (1980-11-01), Sullivan, Jr. et al.
patent: 4462608 (1984-07-01), Lederman
patent: 4474363 (1984-10-01), Numazawa et al.
patent: 4618127 (1986-10-01), LeSalver et al.
Bojanowski Gerald M.
Ferdelman Donald C.
Knable Joseph J.
General Motors Corporation
Love John J.
Weaver Ross
White Charles R.
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