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:
Jun. 12, 1979
Filed:
Jan. 30, 1978
Applicant:
Inventor:
William C Knoll, Turbotville, PA (US);
Assignee:
GTE Sylvania Incorporated, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
315278 ; 3151 / ; 315187 ; 3152 / ; 315D / ; 336172 ; 336212 ;
Abstract
Electronic ballast apparatus includes a transformer having an 'E'-shaped core member with a primary winding wrapped on a center leg member and coupled to a potential source and first and second secondary windings each wrapped on a first and second outer leg member of the core member and coupled to gaseous discharge lamps such that flux developed in the primary winding is differentially divided between the first and second secondary windings in inverse relation to energization of the gaseous discharge lamps.