Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-01-12
1996-11-19
Mullen, Thomas
Communications: electrical
Condition responsive indicating system
Specific condition
188111, 280 33994, G08B 1314
Patent
active
055766919
ABSTRACT:
Method and apparatus for deterring theft of manually operated wheeled vehicles, reducing unauthorized use and removal of steel or steel and plastic constructed swivel-wheel shopping carts by preventing the free movement of one or more of the installed wheels. Attached to the frame of the shopping cart, a braking device in accordance with the present invention, when activated, measures the distance traveled beyond an activating point by counting the number of wheel rotations made by the cart and compares this to a preprogrammed stored attribute that defines the allowable distance the cart is allowed to travel once outside the shopping facility. Depending on the direction the cart is travelling, the counter is "armed" or "disarmed" when the cart passes over low-frequency magnetic arrays placed at the entry or exit of the shopping facility.
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Coakley George
Fanelli Joseph
Homer Matthew
Johnson James P.
Pummer Alexander
Hamrick Claude A. S.
Mullen Thomas
PolyTracker, Inc.
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