Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1976-04-06
1978-10-03
Rolinec, Rudolph V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324133, 340635, G01R 3102
Patent
active
041186648
ABSTRACT:
An electric trouble finding apparatus comprises means to test either hot or cold circuits with a single unit. The apparatus comprises a first pair of binding posts which serve as the coupling means to a hot output and a second pair of binding posts which may serve simultaneously as connecting means to a cold or inert circuit. The unit includes a four pole double throw switch having a single lever control and a plurality of twelve terminals in the switch arrangement. A first pair of oppositely positioned switch terminals are connected to an AC power source while a second pair of opposite terminals in the switch are connected to respective hot binding posts. One of the cold binding posts is connected through a lamp to a terminal in the switch while the opposite terminal is coupled to the other cold binding post. A pair of terminals in the switch are interconnected while another pair of terminals in the switch are coupled to the hot outlet from the power supply. Thus, it is possible with a single, relatively simple and inexpensive apparatus to detect faults in either hot or cold circuits or components by merely moving the lever control.
REFERENCES:
patent: 2676300 (1954-04-01), Hirsch et al.
patent: 2697216 (1954-12-01), Lee
patent: 2864999 (1958-12-01), Sullivan
patent: 3016488 (1962-01-01), Smith et al.
patent: 3584299 (1971-06-01), Csete
patent: 3812420 (1974-05-01), Gunter
Rolinec Rudolph V.
Tokar Michael J.
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