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:
Jun. 10, 2008
Filed:
Mar. 31, 2005
Anant Agrawal, Diamond Bar, CA (US);
A. Louis Beaudoin, Oakland, CA (US);
Mandeep S. Arora, Danville, CA (US);
Fred Cheng, Aliso Viejo, CA (US);
Eric M. Chu, Laguna Niguel, CA (US);
Anant Agrawal, Diamond Bar, CA (US);
A. Louis Beaudoin, Oakland, CA (US);
Mandeep S. Arora, Danville, CA (US);
Fred Cheng, Aliso Viejo, CA (US);
Eric M. Chu, Laguna Niguel, CA (US);
Cantaloupe Systems, Inc., Berkeley, CA (US);
Abstract
A vending machine door monitoring system for an audit system is provided. This door monitoring system may utilize the same door switch utilized by the vending machine controller (VMC) in order to detect the state of an access door for the vending machine. This door monitoring system may have a separate power supply for applying a back-up voltage to a door circuit in the event that the VMC fails to supply the voltage. The door monitoring system may be further configured to detect a state of the door circuit regardless of the order in which the terminals from the door switch are coupled to the audit system.