Method for making a vehicle wheel with a foamed resin core

Details Method for making a vehicle wheel with a foamed resin core Method for making a vehicle wheel with a foamed resin core

1977-10-31

1979-05-08

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

156228, 156330, 264 467, 264 469, 264267, 264DIG83, B29D 2704

Patent

active

041536576

ABSTRACT:
Polyurethane foam is used in a three-piece vehicle wheel as a load bearing and load transmitting structural element. The rim of the wheel, an inner wheel disc, and an outer decorative wheel disc are bonded together by the polyurethane foam. The rim includes an interlock lip to interlock the rim with the inner disc and an interlock lip that interlocks the rim with the outer decorative disc. The wheel can be manufactured by placing the rim, inner disc, and outer disc in a die and injecting the polyurethane foam composition into the interconnected volume enclosed and defined by those wheel components. The foam curing process then occurs in situ. Alternatively, the rim, inner disc, and outer disc can be adhesively bonded to a preformed polyurethane foam member. The resultant vehicle wheel, manufactured by either process, is characterized by high strength, light weight, and a decorative appearance.

REFERENCES:
patent: 2547953 (1951-04-01), Lyon
patent: 3663064 (1972-05-01), McCarroll
patent: 3669501 (1972-06-01), Derleth
patent: 3790219 (1974-02-01), Watts
patent: 3810337 (1974-05-01), Pollard
patent: 3909065 (1975-09-01), Main
patent: 3917779 (1975-11-01), Breer et al.
patent: 3968996 (1976-07-01), Wilcox
patent: 4000926 (1977-01-01), Wilcox
patent: 4017348 (1977-04-01), Shumaker

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