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:
Mar. 17, 1992
Filed:
Sep. 14, 1990
Roger Ignon, Palos Verdes Estates, CA (US);
Fred Schmidt, Redondo Beach, CA (US);
Other;
Abstract
A self contained battery operated table lamp for use in restaurants, and the like. The lamp includes an electric light which is energized on an intermittent basis by a switching circuit to assure long battery life. A feed back loop is included in the switching circuit for establishing the duty cycle of the energizing power intermittingly applied to the lamp. A flicker signal generator is connected to the energizing circuit of the light to introduce a flicker into the output of the light. The flicker signal generator incorporates a plurality of independent oscillators, each operating at a slightly different frequency. The outputs of the various oscillators are summed in a summing network with each being given a slightly different weighting factor, and the resulting signal is injected into a feedback loop to modify the average voltage of the light. The lamp is caused to provide a pseudo-random candle simulating effect.