公开(公告)号：EP1869405A4

公开(公告)日：2010-12-15

申请号：EP06739105

申请日：2006-03-20

Applicant: GATEKEEPER SYSTEMS INC

Inventor： CARTER SCOTT J ,  HANNAH STEPHEN E ,  JAMES JESSE M

IPC: G01C21/00 ,  G01C17/00

CPC classification number: B62B5/0438 ,  A47F10/04 ,  B60K25/08 ,  B60T7/16 ,  B60T7/18 ,  B62B3/14 ,  B62B3/1404 ,  B62B3/1412 ,  B62B3/1424 ,  B62B3/1492 ,  B62B5/0003 ,  B62B5/0423 ,  B62B5/048 ,  G01C21/00 ,  G01C21/12 ,  G01C21/206 ,  G06K7/10366 ,  G06Q10/08 ,  G08B13/2434 ,  G08B13/2448 ,  G08B13/246 ,  G08B13/2462 ,  G08B13/2474 ,  G08B13/2477 ,  G08B13/2482 ,  G08G1/20 ,  H02K7/1846 ,  H04W4/02 ,  H04W4/028 ,  Y10T16/195 ,  Y10T29/49826

Abstract: A system for controlling shopping carts usage in the vicinity of a parking lot, the system comprising: a device that repeatedly transmits a lock command from a directional antenna (282), said directional antenna mounted above ground and angled downward to create a lock zone (286) in which shopping cart use is restricted, said lock zone encompassing an exit area associated with the parking lot; and a plurality of shopping carts, each shopping cart comprising a brake mechanism, and comprising an RF communication circuit that is responsive to the lock command by activating the brake mechanism.