- Electrostatic motor
An electrostatic motor or capacitor motor is a type of
electric motor based on the attraction and repulsion ofelectric charge . Usually, electrostatic motors are the dual of conventional coil-based motors. They typically require a high voltage power supply, although very small motors employ lower voltages. Conventional electric motors instead employ magnetic attraction and repulsion, and require high current at low voltages. In the1750s , the first electrostatic motors were developed byBenjamin Franklin and Andrew Gordon. Today the electrostatic motor finds frequent use in micro-mechanical (MEMS ) systems where their drive voltages are below 100 volts, and where moving charged plates are far easier to fabricate than coils and iron cores. Also, the molecular machinery which runs living cells is often based on linear and rotary electrostatic motors.The prime classifications of electrostatic motors by the
USPTO are:
* Class 310 ELECTRICAL GENERATOR OR MOTOR STRUCTURE
** 300 NON-DYNAMOELECTRIC
*** 308 Charge accumulating
*** 309 ElectrostaticPatents
* US patent|633829 -- J. Gallegos -- "Static electric Machine"
* US patent|735621 -- E. Thomson -- "Electrostatic motor"
* US patent|993561 -- Harold B. Smith -- "Apparatus for transforming electrical energy into mechanical energy"
* US patent|1693806 -- W. G. Cady -- "Electromechanical System"
* US patent|1974483 —- T. T. Brown -- "Electrostatic motor" (1934-09-25)
* US patent|3433981 -- B. Bollee -- "Electrostatic Motor" ("ed." Electrostatics fromAtmospheric Electricity )
* US patent|3436630 -- B. Bollee -- "Electrostatic Motor"
* US patent|5552654 -- MITSUBISHI CHEM CORP -- "Electrostatic actuator"
* US patent|5965968 -- Robert, et al. -- "Electrostatic Motor"ee also
*
Electrostatic generator External articles and further reading
* O. Jefimenko, "Electrostatic Motors", Electret Scientific Co., 1973
* de Queiroz, Antonio Carlos M., " [http://www.coe.ufrj.br/~acmq/elmotor.html An Electrostatic Linear Motor] ". 24 January 2002.
* C.L. Stong, " [http://f3wm.free.fr/sciences/jefimenko.html Electrostatic Motors Are Powered By Electric Field of the Earth] ", October 1974.
* William J. Beaty, " [http://www.eskimo.com/~billb/emotor/emotor.html Simple Electrostatic Motor] ".
* " [http://users.tm.net/lapointe/Electrostatic_Motor.html ElectrostaticMotor] ". tm.net.
* Fast and Flexible Electrostatic Motors at Univ. Tokyo" [http://www.aml.t.u-tokyo.ac.jp/movies/research/demed.mpg] ".
* Heavy Lifting Electrostatic Motors at Univ. Tokyo" [http://www.aml.t.u-tokyo.ac.jp/movies/es_motor/demed.mov] ". ----
Wikimedia Foundation. 2010.
