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. 20, 1979
Filed:
Jun. 27, 1977
Applicant:
Inventor:
James P Zender, Sumter, SC (US);
Assignee:
ESB Incorporated, Philadelphia, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
H02J / ; H01R / ;
U.S. Cl.
CPC ...
320 25 ; 320 48 ; 339 / ; 340636 ;
Abstract
A polarity indicating system using a light emitting diode is mounted on the clip for a battery charger to provide an indication that the battery charger is properly connected to the battery being charged. In the preferred embodiment, the LED is connected to a test probe mounted in one of the handles of the negative clip and connected in series between the test probe and the positive cable. An alternate embodiment uses the polarity indicating system on battery booster cables.