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:
Oct. 12, 1993
Filed:
Apr. 02, 1992
Abraham H Bank, Long Beach, CA (US);
Ralph E Hearn, Chehalis, WA (US);
T.T.I. Corporation, Signal Hill, CA (US);
Abstract
An energy saving fluorescent lamp controller includes a current sensor together with a controlled circuit producing a timer signal in response to increased current drawn by a fluorescent lighting system. The timer responds to the control signal by producing a fixed duration operation signal which is applied to a switching system within the power coupling to the fluorescent lamp array. A pair of alternative power coupling networks are utilized to alternatively operate the fluorescent lamps at either of two different voltages in response to the control circuit and switching system. Audible and visual indicating alarms are utilized to alert the operator to the operating state of the system.