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. 17, 1989
Filed:
Oct. 23, 1987
Applicant:
Inventor:
Doren Rosenthal, Sal Luis Obispo, CA (US);
Assignee:
Mattel, Inc., Hawthorne, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A63H / ; A63H / ; A63H / ;
U.S. Cl.
CPC ...
446175 ; 446219 ; 446297 ;
Abstract
A toy figure for detecting and signaling changes in ambient light level in which a detection circuit includes an operational amplifier acting as a comparator for comparing two signals from a voltage divider network. The first input signal is the signal of interest to be detected. The second input signal is held stable by a capacitor with a relatively long time constant. When the first signal exceeds the second signal, a change in output of the comparator is produced to effect both radiation and audio signal outputs from the toy figure.