Time delay switch

Details Time delay switch Time delay switch

1984-07-23

1985-11-12

Pellinen, A. D.

Electricity: circuit makers and breakers

Retarded

Dashpot

200 82C, H01H 4300

Patent

active

045529990

ABSTRACT:
A time delay switch comprising a housing, an actuating device partially in and partially outside of the housing, a switch capable of being rendered to a first and a second state, biasing device and a compressible/expansional pneumatic device disposed in the housing for rendering the switch from a first to a second state; the actuating device is movable within the housing from a first to a second position from a portion of it outside of the housing; the switch is affixed to the actuating device; the biasing device is connected to the actuating device portion inside of the housing and to the housing itself so that the actuating device is biased towards its first position; and, the pneumatic device is aligned with the switch and compresses same causing the switch to be in its first state when the actuating device is in its first position and when the actuating device is in its second position and the pneumatic device is in its fully expanded state, the pneumatic device has a rate of expansion from its compressed to its expanded state less than the actuating device and can be operated, thereby creating a time interval between the compressed and expanded state whereby the switch is not in contact with the pneumatic device and is thus in its second state.

REFERENCES:
patent: 1662711 (1928-03-01), Maynard
patent: 3187121 (1965-06-01), Mingrone

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