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. 29, 1998
Filed:
Dec. 29, 1997
James C Johnson, Conyers, GA (US);
National Service Industries, Inc., Atlanta, GA (US);
Abstract
An improved inverter or 'fluorescent battery pack' useful particularly in an emergency lighting system with both magnetic and electronic ballasts of both 'rapid start' and 'instant start' configurations, the present inverter is rapidly installable in emergency lighting systems which include fluorescent lighting fixtures operable with either magnetic ballasts which are typically 'non-isolated' or electronic ballasts which are typically 'isolated'. The inverter circuitry of the invention is simply installable in the present emergency lighting system due to an effective disconnection of the ballasts with concurrent connection between the inverter and lamping, only two effective connections to the lamp thus being necessary with a resulting avoidance of wiring redundancy.