Energy saving control circuit for a light switch and a method therefor

Patent 4540984 Issued on September 10, 1985. Estimated Expiration Date:

November 5, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3898383

Electronic controlled-duration switching
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Issued on: 12/20/1983
Inventor: Bailey

Inventor

Waldman, Herbert H.

Application

No. 06/439650 filed on 11/05/1982

US Classes:

340/825, SELECTIVE307/132E, Electronically controlled relay307/141, With time delay or retardation means340/309.8, Separate diverse device activated by timer340/309.9, Separate diverse device deactivated by timer367/198Humanly generated sound or speech responsive (e.g., human whistle)

Examiners

Primary: Yusko, Donald J.

Attorney, Agent or Firm

Ostrolenk, Faber, Gerb & Soffen

International Classes

H05B 39/00 (20060101)
H05B 37/02 (20060101)
H05B 39/08 (20060101)

Abstract

An energy saving light switch is disclosed. The light switch includes a human actuable switch and a control circuit responsive thereto. The control circuit operates a light in a first timed mode in which the light is turned on for a predetermined period of time responsive to an initial actuation of the switch and operates the light in a second untimed mode in which the light is turned on for an indefinite period of time responsive to the actuation of the switch during a predetermined time window forming part of the predetermined time period.