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:
Aug. 10, 1976
Filed:
Jun. 25, 1975
Applicant:
Inventor:
Johannes Van Den Haak, Indianapolis, IN (US);
Assignee:
Curtis Dyna Products, Corporation, Westfield, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
324 295 ; 324 96 ; 320 48 ; 3402 / ; 3072 / ;
Abstract
Disclosed is a device for checking the energy level of a battery, or battery pack, of the type used in the powering of transmitters, receivers and servos used in powered model airplanes, boats, cars, etc. The circuit connects a silicon controlled rectifier (SCR) and two light emitting diodes (LED) so that the diodes give a no, no-go indication of the battery's available output compared to a predetermined standard. Initially, in the checking procedure, the battery has power withdrawn through a load resistor prior to the final go, no-go indication.