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:
Jul. 03, 1984
Filed:
Jul. 12, 1983
Applicant:
Inventor:
Frederic P Heiman, Los Gatos, CA (US);
Assignee:
Mars, Inc., McLean, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G07F / ;
U.S. Cl.
CPC ...
318490 ; 194 10 ; 221 21 ; 221129 ;
Abstract
Vending machine control and diagnostic apparatus for a vending apparatus having product delivery means comprising an electrically operated actuator for delivery of products, an impedance element and a circuit opening switch. The impedance element and the switch are connected electrically in series with each other and in a parallel circuit with the actuator, and the opening and closing of the switch is controlled by the operation of the actuator. The control and diagnostic apparatus detects changes in impedance of the parallel circuit.