Electricity: electrical systems and devices – Electric charging of objects or materials
Patent
1995-03-16
1996-12-31
Fleming, Fritz
Electricity: electrical systems and devices
Electric charging of objects or materials
361233, 307400, H01G 702
Patent
active
055900143
ABSTRACT:
A method and apparatus are provided for supplying electric power in the form of an output d.c. voltage. An electret material emits the output d.c. voltage in response to continuously applying a high potential static field across the electret material. In a preferred embodiment, a central member is formed from the electret material and includes two spaced apart, oppositely facing contact surfaces. Two voltage input contacts are separately mounted to the two contact surfaces of the central member, each on opposite sides of an outer portion of the electret material. A static voltage source continuously applies a high static voltage potential across the two voltage input contacts to apply the high potential static field across the outer portions of the electret material. Two voltage output contacts are separately mounted to the two contact surfaces of the central member, on opposite sides of an inner portion of the electret material and spaced apart from the two high voltage contacts. In response to the very high potential field being continuously applied across the outer portion of the electret material, the atoms on the molecules of the electret material are electrically aligned to produce a current. The inner portion of the electret material develops an output d.c. voltage across the two voltage output contacts to thereby supply the electric power.
REFERENCES:
patent: 3736436 (1973-05-01), Crites
patent: 3875433 (1975-04-01), Uchikawa
patent: 4441038 (1984-04-01), Tanaka et al.
patent: 4443711 (1984-04-01), Tanaka et al.
patent: 5179497 (1993-01-01), Bakhoum
Gemant, Andrew, Electrets, Physics Today, pp. 8-13. Mar. 1949.
Bradley James E.
Fleming Fritz
Lockheed Martin Corporation
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