Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1977-01-24
1979-07-17
Blum, Theodore M.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 67, G01V 300
Patent
active
041616863
ABSTRACT:
My invention relates to improved method and means for a concealed structure tracing translator apparatus including position sensitive bitonic indication means. The purpose of my new invention is to provide an added dimension to the class of apparatus frequently employed to trace concealed structures exampled by but not limited to that category of device employed for following the lay of buried pipes, wires concealed in architectural constructions, or other like applications for tracing a hidden structure. This added dimension is accomplished in my new invention through the inclusion of the aggregrate combination of receptor and sensory indicator means resulting in bitonic or stereophonic like indication to the operator or user of my new apparatus. The resultant sensory indication is arranged to provide the operator with relative right or left hand perceptibility as to the lay of the said concealed structure.
REFERENCES:
patent: 3392384 (1968-07-01), Wesch
patent: 3893025 (1975-07-01), Humphreys, Jr.
patent: 3975735 (1976-08-01), McCullough et al.
patent: 4044299 (1977-08-01), Weber
Young, C. A., Measuring the Depth of Buried Cable, Bell Laboratories Record, Nov. 1965, pp. 399-401.
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