Electronic timer

Details Electronic timer Electronic timer

1978-04-03

1981-06-30

Weldon, Ulysses

Horology: time measuring systems or devices

Time interval

368107, 368108, 361195, 361202, 361400, G04F 300

Patent

active

042766311

ABSTRACT:
An electronic timer having two electromagnetic relays is disclosed. The two electromagnetic relays are mounted on an insulating base plate. The electronic timer further comprises a delay circuit. At least one of the two electromagnetic relays is connected to an external power supply through the delay circuit. These two electromagnetic relays may be connected in such a manner that when connected with an external power supply, one of them is operated instantaneously while the other is actuated after a delay time, or in such a manner that both of them are simultaneously operated after a predetermined delay time, or in such a manner that they are operated after different delay times.

REFERENCES:
patent: 2999191 (1961-09-01), Muradian et al.
patent: 3099758 (1963-07-01), Pieczynski
patent: 3134986 (1964-06-01), Gelhar
patent: 3142784 (1964-07-01), Bloomfield
patent: 3204060 (1965-08-01), Mentzer
patent: 3339117 (1967-08-01), Fisher
patent: 3475657 (1969-10-01), Knowles
patent: 3800257 (1974-03-01), Schmitt

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