Double helix, method of making same and spiral link belt made th

Details Double helix, method of making same and spiral link belt made th Double helix, method of making same and spiral link belt made th

1991-12-09

1993-02-02

Bui, Thuy M.

Endless belt power transmission systems or components

Friction drive belt

Having drive surface on helically coiled wire or cord

57 3, 72 64, 156425, F16G 100

Patent

active

051834421

ABSTRACT:
A double helix is formed from two partial helices each having the same winding direction and each having an oval cross-section with nearly straight upper and lower winding legs. The facing winding arcs of the two partial helices encircle each other. The upper winding legs of the partial helices extend at a different angle with respect to the longitudinal axis of the partial helices than the lower winding legs of the respective partial helix. The upper winding legs of one partial helix extend at the same angle with respect to the longitudinal axis as the lower winding legs of the other partial helix and vice versa.

REFERENCES:
patent: 1214911 (1917-02-01), Granz
patent: 4090832 (1978-05-01), Moertel

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