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. 26, 1999
Filed:
Jul. 15, 1998
Robert D Lee, Denton, TX (US);
Stephen M Curry, Dallas, TX (US);
Michael L Bolan, Dallas, TX (US);
Hal Kurkowski, Dallas, TX (US);
Donald R Diaz, Carrollton, TX (US);
Francis A Scherpenberg, Dallas, TX (US);
Kevin E Peirling, Los Altos Hills, CA (US);
Dallas Semiconductor Corporation, Dallas, TX (US);
Abstract
A secured metal token using a single wire communication system is employed to dispense units of value and to provide a secure storage device for controlling the dispensing of articles or service items. The metal token can be formed of two pieces with a simplified electronic circuit inside which can contain units of value for the dispensing of items using the memory within the metal token as a secure vault. The token uses a simple two wire (ground and combined clock/data) arrangment. As goods are purchased or services rendered the value of those good or services is deducted from a prestored amount within the token.