Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1978-03-09
1980-05-20
Strecker, Gerard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
G01R 3102
Patent
active
042041546
ABSTRACT:
A device including a lead testing and motor starting circuit characterized by a direct current voltage source, a pair of terminal plugs connected with the circuit, each being characterized by a first, second, and third terminal, a pair of manually operable switches for connecting the first terminal of each plug of the pair to the positive side of the voltage source, a circuit lead connecting to the second terminal of each plug the negative side of said source, a pair of electrical cables adapted to connect said first and second terminals of each plug to an air-start unit, and means for connecting each cable of the pair of cables between the first terminal of one plug and the third terminal of the other plug of the pair, and a second pair of manually operable switches for selectively connecting the third terminal of each plug of the pair to the negative side of the voltage source, whereby the electrical continuity of each cable of the pair may be examined prior to being connected to an air-start unit.
REFERENCES:
patent: 2221556 (1940-11-01), Roemisch
patent: 2840781 (1958-06-01), Ragonese
patent: 2858507 (1958-10-01), Liautaud et al.
patent: 2904750 (1959-09-01), Gargani et al.
patent: 3543111 (1970-11-01), Harris et al.
patent: 3590373 (1971-06-01), Lake
patent: 3663939 (1972-05-01), Olsson
patent: 3737767 (1973-06-01), Slutsky
patent: 3753088 (1973-08-01), Ettelman
patent: 3818329 (1974-06-01), Reaves
patent: 4037220 (1977-07-01), Beyersdorf
Frosch Robert A. Administrator of the National Aeronautics and Space
Rosier William R.
Volk George G.
Manning John R.
McCaul Paul F.
Mott Monte F.
Strecker Gerard R.
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