Electric lamp and discharge devices: systems – Current and/or voltage regulation
Patent
1988-01-26
1990-07-03
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Current and/or voltage regulation
200 5A, 315362, 315DIG4, H05B 3702, H05B 4104, H05B 4118, G05F 110
Patent
active
049394282
ABSTRACT:
The described embodiment of the present invention provides a very low pressure electrical switch for use in brightness control of lamps. The electrical switch includes a flexible membrane on which printed leads are interlaced in a regular fashion. Portions of the interlaced electrical leads are exposed. The membrane is fastened to the surface of a rigid surface. In the area under the exposed conductor, a fixed conductor is formed. The membrane is fastened to the surface of the rigid surface so that a very small spacing is maintained between the exposed conductors and the fixed conductor. Because of this small spacing, a very light touch is required to cause the exposed conductors to be shorted to the fixed conductor. A microprocessor then determines which leads of the membranes are shorted together and causes the light to dim appropriately. The lighting system also contains a delay off feature in which the microprocessor causes a discernible dimming to occur when the delay off feature switch is pressed but which does not shut off the lamp until a fixed period of time has passed, thereby allowing the operator to leave the room completely before the lamp is shut off.
REFERENCES:
patent: 4125934 (1978-11-01), Keough et al.
patent: 4129758 (1978-12-01), Gilano et al.
patent: 4180711 (1979-12-01), Hirata et al.
patent: 4359670 (1982-11-01), Hosaka et al.
patent: 4649323 (1987-03-01), Pearlman et al.
LaRoche Eugene R.
Neyzari Ali
Westek Associates
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