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:
Jan. 18, 1994
Filed:
Jan. 31, 1991
Applicant:
Inventor:
Gary Carter, Charlottesville, VA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ; G01V / ;
U.S. Cl.
CPC ...
315152 ; 315157 ; 315159 ; 2502 / ;
Abstract
An electrical device such as a lamp is energized and deenergized remotely by a system in which pulses of different duration are transmitted to a receiver unit capable of discriminating between the length of the pulses in order to switch between an 'on' mode and an 'off' mode. A battery energizing the receiver unit is recharged by a photovoltaic cell. Advantageously associated with the battery charging circuit is an ambient lights sensing device capable of interrupting current from the battery to a load whenever the battery is being charged by the photovoltaic cell.