Hybrid composite leaf springs

Details Hybrid composite leaf springs Hybrid composite leaf springs

1995-02-13

1997-09-16

Oberleitner, Robert J.

Spring devices

Fibrous

267149, F16F 136

Patent

active

056672063

ABSTRACT:
A hybrid composite automotive leaf spring comprises parallel glass and polyethylene terephthalate fibers distributed in a pattern replicated throughout a resin matrix. A method of producing the hybrid composite leaf spring comprises winding various proportions of glass and polyethylene terephthalate or nylon fibers together into a homogeneous mass in an epoxy matrix in a mold to form a blank, which is then compressed and cured into a leaf spring having a predetermined homogeneous mixture of parallel fibers distributed throughout the cross-section of the spring. The unitary spring has a spring rate that is a composite of the resin-bonded glass and other fibers. Different spring rates are obtained by varying the percentage content of the glass and other fibers, while maintaining the homogeneity of the resultant leaf spring.

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patent: 5194111 (1993-03-01), Meatto
Handbook of Composites, Van Norstrand Reinhold Co., New York (1982), pp. 450-451.
Warner et al, Plastics Design Forum, Jul./Aug. 1980, pp. 14, 16, 17.

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