초록 ▼

A security apparatus for a shopping cart or other wheeled vehicle having a plurality of casters has a braking member rotatably mounted on a wheel axle of one of the wheels. The braking member is movable between a raised position spaced above the ground surface and an operative position contacting th

A security apparatus for a shopping cart or other wheeled vehicle having a plurality of casters has a braking member rotatably mounted on a wheel axle of one of the wheels. The braking member is movable between a raised position spaced above the ground surface and an operative position contacting the ground surface, and has a portion projecting radially outwardly from the outer peripheral rim of the wheel at least in the operative position so as to separate the wheel from the ground and impede movement of the vehicle. A locking device releasably locks the braking member in the raised position, and is released by a trigger device in response to a signal from a signal system extending around an area in which carts are to be retained, at which point the braking member rotates into the operative position, stopping normal movement of the cart.

대표청구항 ▼

[ We claim:] [1.] A security apparatus for a wheeled vehicle having a plurality of wheels, comprising:a braking member for rotatably mounting on a wheel axle for movement between a raised position spaced above the ground surface and an operative position contacting the ground surface, the braking me

[ We claim:] [1.] A security apparatus for a wheeled vehicle having a plurality of wheels, comprising:a braking member for rotatably mounting on a wheel axle for movement between a raised position spaced above the ground surface and an operative position contacting the ground surface, the braking member having a portion projecting radially outwardly from the outer peripheral rim of the wheel at least in said operative position so as to separate the wheel from the ground and impede movement of a vehicle;a locking assembly including a latch device for releasably locking the braking member in the raised position;a trigger device for automatically releasing the latch device in response to a trigger signal from a signal system extending around an area in which carts are to be retained, whereby the braking member can rotate into the operative position; anda receiver circuit for detecting the trigger signal and operating the trigger device, in response to the trigger signal in order to release the latch device.