Electricity: motive power systems – Automatic and/or with time-delay means – Level of fluid or granular material
Patent
1979-11-21
1981-09-22
Weldon, Ulysses
Electricity: motive power systems
Automatic and/or with time-delay means
Level of fluid or granular material
307142, 340623, G05B 500
Patent
active
042912610
ABSTRACT:
Control apparatus for an electrical load device, comprising a relay having a winding and a set of normally open contacts which are closed and opened, after short delays, upon energization and deenergization respectively of the winding, first and second switches arranged to be closed and opened in predetermined sequences, a first circuit for supplying electrical energy from a source to the winding through both the switches series, and a second circuit for supplying electrical energy to the winding and the load device from the source through one of the switches and the contacts of the relay, the second circuit connecting the contacts in parallel with the other of the switches.
REFERENCES:
patent: 2694171 (1954-11-01), Campbell
patent: 2697196 (1954-12-01), Harper
patent: 3070021 (1962-12-01), Tutthill
patent: 3602251 (1971-08-01), Hill
patent: 3662131 (1972-05-01), Leistiko
patent: 3832702 (1974-08-01), Szeverenyi
patent: 3922564 (1975-11-01), Kachuk et al.
patent: 4065227 (1977-12-01), Rose
patent: 4120611 (1978-10-01), Salve
S. J. Electro Systems Inc.
Weldon Ulysses
LandOfFree
Electrical load control circuit useful in liquid level control s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrical load control circuit useful in liquid level control s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical load control circuit useful in liquid level control s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-337343