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:
Sep. 07, 1999
Filed:
Apr. 21, 1997
Applicant:
Inventors:
James W Oram, Charlotte, NC (US);
Alan M Schulman, Highland Park, IL (US);
Assignee:
Glentronics, Inc., Glenview, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01G / ; I01G / ; F21S / ; F21V / ;
U.S. Cl.
CPC ...
47 581 ; 47 17 ; 47 39 ; 47 / ; 315 76 ; 362 85 ; 362805 ;
Abstract
A system for simulating the lighting cycle of the sun comprising: means for obtaining a set of inflection points on a solar lighting cycle and obtaining the annual minimum sunlight value for a location at a predetermined latitude; means for reconstructing the daily and yearly solar cycle based about said set of inflection point and said minimum yearly value; means for determining the lighting period based upon said daily and yearly cycles; and means for activating a lighting device for the determined lighting period.