Spring motor

Details Spring motor Spring motor

1988-01-28

1989-05-23

Herrmann, Allan D.

Motors: spring, weight, or animal powered

Spring

Escapement controlled

74 15, 185DIG1, 368134, 368181, 446464, F03G 106, F16H 2700, G04B 1512

Patent

active

048321567

ABSTRACT:
A braking device is provided to reduce the speed at which a shiftable spring motor runs down. The braking device includes a pallet which is mounted so that it can oscillate, the pallet having a pair or arms which cooperate with the teeth of an escape wheel 13 which rotates as the spring runs down. The pallet is connected to a pendulum weight. The depth of engagement of the arms of the pallet in the teeth of the escape wheel as well as the amplitude of oscillation of the pallet and/or the pendulum weight connected therewith allow the braking action to be changed and hence the speed at which the motor runs down in one of a plurality of selectable shift positions.

REFERENCES:
patent: 638745 (1899-12-01), Newell
patent: 1130435 (1915-03-01), Ross
patent: 3812933 (1974-05-01), Darda
patent: 3981098 (1976-09-01), Darda
patent: 4053029 (1977-10-01), Darda
patent: 4106282 (1978-08-01), Larsson
patent: 4715475 (1987-12-01), Minoru

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