Motion activated power source

Details Motion activated power source Motion activated power source

2007-07-31

2007-07-31

Dougherty, Thomas M. (Department: 2834)

Land vehicles: wheels and axles

Wheel

Compression wheel

C310S330000

Reexamination Certificate

active

10534814

ABSTRACT:
An electrical generator or motion sensor including a) a pair of elongated L shaped supports (15) fixed at one end but free to move at the other b) a coil (14) secured to the supports remote from the fixed end c) an array of permanent magnets (12) arranged adjacent the coil such that movement of the coil through the magnetic field induces an electric current in the coil. To rectify the current the supports are made of a piezoelectric polymer membrane so that movement of the coil stresses the membrane to generate a voltage that is used to turn on a MOSFET transistor rectifier.

REFERENCES:
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patent: 3480808 (1969-11-01), Rieth
patent: 4412355 (1983-10-01), Terbrack et al.
patent: 6252336 (2001-06-01), Hall
patent: 6433465 (2002-08-01), McKnight et al.
patent: 6700217 (2004-03-01), North et al.
patent: 2264208 (1993-08-01), None
patent: 2478996 (1981-10-01), None
patent: 2264208 (1993-08-01), None
patent: 2326275 (1998-12-01), None
patent: WO 01/20760 (2001-03-01), None

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