Traction dynamometer for measuring tensile forces in the laying of cables
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United States of America Patent
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Oct 2, 1990
Grant Date -
N/A
app pub date -
Nov 8, 1988
filing date -
Mar 18, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Tension dynamometer which, when in traction connection with a cable, serves to determine the tension forces during the laying of the cable, the dynamometer including the following parts: a strain gauge (9), a preamplifier (10), a voltage-to-frequency converter (11) which converts the signal from the force measuring sensor, a transfer circuit (12, 13) which uncouples the converted signal of the force measuring sensor and transfers it to a reading station, and a storage battery (15) to supply power to the above-named elements. The dynamometer additionally has a time switch (17, 18) which interrupts the power supply of at least one current-consuming element after an established period of constant tension force and turns it on again upon the occurrence of a tension force change, or extends this period by an established length of time upon the occurrence of a tension force change during the period and during the extension does not interrupt the power supply.
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