Boots – shoes – and leggings
Patent
1982-03-01
1984-12-18
Krass, Errol A.
Boots, shoes, and leggings
250231SE, 324137, 34087002, 34087029, G01R 2726, G01R 1136, G08C 1936
Patent
active
044893841
ABSTRACT:
The electronic watt-hour meter (10) comprises an electro-optical watt-hour sensor (12) adapted to be coupled to a consumer's connection to a source of electric power for sensing voltage supplied to, and the current drawn by, the consumer's electric load and for producing output signals indicative of a quantity of watt-hours of power utilized by the consumer. In the meter (10) a microprocessor (22) is coupled to the sensor (12) for receiving output signals therefrom and a memory (29) is coupled to the microprocessor (22) for receiving and storing data. A power supply (24) supplies D.C. power to the microprocessor (22) and includes a clock signal generator to supply a 60 Hz. clock signal to the microprocessor (22). Also a visual display (30) is coupled to the microprocessor (22) for providing a readout of the power consumed since the last reading of the solid state watt-hour meter. The electro-optical sensor (12) includes a yoke (14) having a voltage core (62) and at least one current core (66 or 67), an induction disk (16) mounted for rotation in yoke (14), a voltage coil (64) in FIG. 1 on the voltage core (62) and a current loop (68 or 69) on the current core (66 or 67) for causing, when energized, rotation of the induction disk (16). At least one aperture (76) in FIG. 2 is provided in the disk (16). LED's (71 and 72), positioned on one side of the disk (16), are coupled to the microprocessor (22). Photosensors (81 and 82) are positioned on the other side of the disk (16) for receiving light passing therethrough and for generating an output signal which is supplied to a direction sensing and revolution counting circuit (90) in FIG. 2 for sensing the direction of rotation of the disk (16) and for supplying such information to the microprocessor (22). A power supply coil (26) is mounted on the yoke (14) for supplying A.C. voltage to the power supply (24).
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Gilker Clyde
Hurley James R.
Gabala James A.
Gealow Jon Carl
Krass Errol A.
McGraw-Edison Company
Tager Clifford L.
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