Caster-lock with dual receivers

Details Caster-lock with dual receivers Caster-lock with dual receivers

2006-12-28

2008-09-02

Nguyen, Phung (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

C340S568500, C188S001120

Reexamination Certificate

active

07420461

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.

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