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:
Sep. 02, 2008
Filed:
Dec. 28, 2006
Joseph F. Nebolon, Del Mar, CA (US);
David A. Poirier, Escondido, CA (US);
John R. French, San Diego, CA (US);
Joseph F. Nebolon, Del Mar, CA (US);
David A. Poirier, Escondido, CA (US);
John R. French, San Diego, CA (US);
Carttronics, LLC, San Diego, CA (US);
Abstract
A locking system for stopping a shopping cart includes a caster that can be selectively disabled when the cart encounters an electronic barrier. The caster includes a brake that is mounted on the frame of the caster. Also mounted on the frame are two receivers for separately receiving different signals from an electronic barrier. Respective decoders on the frame decipher lock commands in the signals, and a controller selectively activates the brake to prevent further movement of the cart in response to the lock commands. The electronic barrier can include an underground loop antenna and an above-ground RF beacon.