The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 1985
Filed:
Jun. 20, 1983
Applicant:
Inventor:
Frederick H Blake, Los Altos, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
315323 ; 315308 ; 315360 ;
Abstract
A light circuit control apparatus for controlling the illumination of a predetermined area is described comprising a photocell coupled to a first comparator circuit for generating a 'light-on' signal when the ambient light in the predetermined area decreases to a first predetermined intensity and a second comparator for generating a 'light-off' signal when the ambient light in the predetermined area increases to a predetermined intensity, and logic circuits including flip-flops for turning on and turning off a plurality of lighting circuits in a predetermined sequence in response to the 'light-on' and 'light-off' signals generated by the comparator.