Tube structure for bicycle and motorcycle frames

Details Tube structure for bicycle and motorcycle frames Tube structure for bicycle and motorcycle frames

1982-04-06

1984-03-20

Peters, Jr., Joseph F.

Land vehicles

Wheeled

Occupant propelled type

138141, 138174, 138DIG11, B62K 1902

Patent

active

044376790

ABSTRACT:
A light and strong tube structure for frames of bicycles and motorcycles has its cross sections with a variable thickness of the tube wall. Said wall is formed by two or more layers of different materials, of which at least one is metallic material and at least another one has a preferential direction of tensile strength. Preferably, the straight cross sections of the tube are outwardly defined by a circle and inwardly defined by an ellipse and the said layers comprise an external metallic layer and an internal layer of fibers incorporated into resin.

REFERENCES:
patent: 556805 (1896-03-01), Carlson
patent: 2261912 (1941-11-01), Buente
patent: 3451434 (1969-06-01), Bauer
patent: 3966230 (1976-06-01), Nicol

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