Spring power device

Motors: spring – weight – or animal powered – Spring – With winding means

Patent

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Details

200 6178, F03G 100, H01H 316

Patent

active

039602460

ABSTRACT:
A spring power device is provided which includes a multiturn coil spring having its inner end anchored to a rotatable shaft and its outer end anchored to a large drive gear which is mounted to rotate freely on the shaft. An electric motor is connected to rotate the shaft. Whenever the coil spring winds down, a microswitch senses the radial outward movement of the outermost turn thereof and connects a battery to energize the motor to wind up the inner end of the coil spring at a fast rate. The drive gear is controlled to release the power stored in the coil spring to drive a load.

REFERENCES:
patent: 1389735 (1921-09-01), Broach
patent: 1721807 (1929-07-01), Eisiminger et al.
patent: 3267659 (1966-08-01), Hancock
patent: 3395687 (1968-08-01), Harkness
patent: 3621172 (1971-11-01), Clark
patent: 3664736 (1972-05-01), Jungjohann et al.

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