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. 25, 1984
Filed:
May. 26, 1982
Applicant:
Inventors:
Larry A Lindner, Hackettstown, NJ (US);
George Duve, Washington, NJ (US);
Gilman Hallenbeck, West Palm Beach, FL (US);
Assignee:
Area Lighting Research, Inc., Hackettstown, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
315119 ; 315247 ; 315308 ;
Abstract
A cycling cut-off arrangement protects a ballast-starter circuit of a luminaire of the type having a high pressure sodium lamp from damage in the event of a cycling malfunction by sensing the change in power factor across the lamp during cycling, and disabling the ballast-starter circuit from its power source once cycling has been reliably detected. The method of sensing the power factor change, and of disabling the ballast-starter circuit is also disclosed, as well as a method of installing the arrangement on the luminaire with minimum retro-fitting required.