Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1980-01-15
1981-12-08
Hix, L. T.
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
307115, 307117, 315156, 315194, 250221, H05B 3700, H03K 17945
Patent
active
043050069
ABSTRACT:
An on-off switch and a dimmer for an electrical load such as an electric light. The on-off switch comprises a source and detector of infra-red radiation for controlling on-off circuitry and a load switch. The on-off switch is activated by passing one's hand close to and in front of the source and detector. This action activates the on-off circuitry to control the load switch to turn the light on. A second pass of the hand turns the light off. A second source and detector of infra-red radiation and dimmer circuitry are provided for dimming purposes. Dimming action is achieved by placing one's hand close to and in front of the second source and detector to activate the dimmer circuitry to sequentially control the load switch to change the brightness level of the light. The dimming sequence is stopped when the desired brightness level is reached by moving the hand away from the second source and detector. Touching of the switch case is not required to activate the switch for on-off purposes or for dimming purposes.
In another embodiment, two sources and a common detector are employed as part of two on-off switches for allowing independent control of two loads. In a further embodiment, two sources and a common detector are employed as part of an on-off and dimmer switch for controlling a single load.
REFERENCES:
patent: 3680047 (1972-07-01), Perlman
patent: 3946241 (1976-03-01), Malinowski
patent: 3967111 (1976-06-01), Brown
patent: 4087702 (1978-05-01), Kirby
patent: 4150415 (1979-04-01), Fichtner
patent: 4153860 (1979-05-01), Vonick
Sherwin, Jr. Marshall A.
Walthall Michael S.
Hix L. T,.
Schreyer Stafford D.
Zobal Arthur F.
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