Apparatus, employing capacitor coupling for measuremet of torque on a rotating shaft
First Claim
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1. A combination comprising:
- utilization apparatus;
first means for transmitting electrical power from a first location towards a second location;
second means, at said second location, responsive to electrical power received from said first means, for operating said utilization apparatus;
third means coupled to said utilization apparatus for generating a signal indicative of performance thereat, and for transmitting said signal to said first means via said second means;
with said first means being stationary in operation, and with said second means being mechanically rotational in operation;
with said second means being devoid of any source of operating power thereon; and
with there being an absence of mechanical interconnection between said first means and said second means; and
wherein said first means includes a fixed electrical coil and one plate of a pair of capacitors having two plates each, and wherein said second means includes a rotating electrical coil and a second plate of said pair of capacitors.
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Abstract
Apparatus for measuring the horsepower transmitted by the drive shaft of an automotive vehicle, by determining the torque on the shaft through the measurement of the resistance of an included strain gauge, yet without the need for a power supply, such as a battery, being on the rotating shaft itself, and by employing a capacitive coupling to transmit power and signal to and from the drive shaft and fixed part of the vehicle.
20 Citations
12 Claims
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1. A combination comprising:
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utilization apparatus; first means for transmitting electrical power from a first location towards a second location; second means, at said second location, responsive to electrical power received from said first means, for operating said utilization apparatus; third means coupled to said utilization apparatus for generating a signal indicative of performance thereat, and for transmitting said signal to said first means via said second means; with said first means being stationary in operation, and with said second means being mechanically rotational in operation; with said second means being devoid of any source of operating power thereon; and with there being an absence of mechanical interconnection between said first means and said second means; and wherein said first means includes a fixed electrical coil and one plate of a pair of capacitors having two plates each, and wherein said second means includes a rotating electrical coil and a second plate of said pair of capacitors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification