Spring drum

Details Spring drum Spring drum

1976-07-08

1977-06-21

Herrmann, Allan D.

Motors: spring, weight, or animal powered

Spring

160313, 160318, 185 45, F03G 100, A47G 502

Patent

active

040305678

ABSTRACT:
A spring drum including a coil spring for rotation about a shaft is provided with a cone shaped member located within a cylindrical drum. The cone shaped member is disposed in the drum coaxially with the drum and one end of the coil spring is fixed to the cone shaped member. The coil spring is shaped to have a conical form and provided around the cone shaped member. One end of the coil spring is fixed to the drum and the other end to the shaft, or vice versa.

REFERENCES:
patent: 1371149 (1921-03-01), Dudek
patent: 1712594 (1929-05-01), Valentine
patent: 1792771 (1931-02-01), Sevison

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