A power generation system for wheeled objects comprises a generator mechanically coupled to one or more of the object's wheels to convert wheel rotational energy into electrical energy. The power generation system may comprise an electrical storage device configured to store the electrical power produced by the generator. Power from the generator and/or the electrical storage device can be used to provide power to other electrical systems in or on the object. In certain embodiments, the electrical storage device comprises a bank of high-capacity capacitors connected in series. Some embodiments use a control circuit, for example, to regulate the charging and discharging of the capacitor bank and to provide suitable voltages for other systems. The power generation system may be disposed within an object's wheel, such as a wheel of a shopping cart.

A power generation system for wheeled objects comprises a generator mechanically coupled to one or more of the object's wheels to convert wheel rotational energy into electrical energy. The power generation system may comprise an electrical storage device configured to store the electrical power produced by the generator. Power from the generator and/or the electrical storage device can be used to provide power to other electrical systems in or on the object. In certain embodiments, the electrical storage device comprises a bank of high-capacity capacitors connected in series. Some embodiments use a control circuit, for example, to regulate the charging and discharging of the capacitor bank and to provide suitable voltages for other systems. The power generation system may be disposed within an object's wheel, such as a wheel of a shopping cart.

A system for monitoring and controlling shopping cart usage comprises a wheel assembly that attaches to a shopping cart. In some embodiments the wheel assembly includes a wheel, a brake that can be activated to inhibit rotation of the wheel, a controller that controls the brake, a VLF receiver, and an RF transceiver. The RF transceiver may, for example, operate in a 2.4 GHz frequency band. In some implementations, the RF transceiver may be used to detect entry of the shopping cart into a checkout area of the store, and the VLF receiver may be used to detect that the shopping cart is exiting the store. The controller may activate the brake if the shopping cart attempts to exit the store without first passing through a checkout area.

A system for monitoring and controlling shopping cart usage comprises a wheel assembly that attaches to a shopping cart. In some embodiments the wheel assembly includes a wheel, a brake that can be activated to inhibit rotation of the wheel, a controller that controls the brake, a VLF receiver, and an RF transceiver. The RF transceiver may, for example, operate in a 2.4 GHz frequency band. In some implementations, the RF transceiver may be used to detect entry of the shopping cart into a checkout area of the store, and the VLF receiver may be used to detect that the shopping cart is exiting the store. The controller may activate the brake if the shopping cart attempts to exit the store without first passing through a checkout area.

A device for dispensing and locking carts disposed in a stack, comprising: a dual-lever mechanism, comprising: a locking lever which is blocking movement of a first cart of a plurality of carts disposed in a stack when in open position; a base adjacent to said locking lever which is movable forward and backward with respect to the stack; and a dispensing lever mounted on the base which is blocking movement of a second cart of the plurality of carts when in open position; and a drive belt driving the plurality of carts in parallel to movement of said base by moving forward and backward in coordination with the base.

A device for dispensing and locking carts disposed in a stack, comprising: a dual-lever mechanism, comprising: a locking lever which is blocking movement of a first cart of a plurality of carts disposed in a stack when in open position; a base adjacent to said locking lever which is movable forward and backward with respect to the stack; and a dispensing lever mounted on the base which is blocking movement of a second cart of the plurality of carts when in open position; and a drive belt driving the plurality of carts in parallel to movement of said base by moving forward and backward in coordination with the base.

A device for dispensing and locking carts disposed in a stack, comprising: a dual-lever mechanism, comprising: a locking lever which is blocking movement of a first cart of a plurality of carts disposed in a stack when in open position; a base adjacent to said locking lever which is movable forward and backward with respect to the stack; and a dispensing lever mounted on the base which is blocking movement of a second cart of the plurality of carts when in open position; and a drive belt driving the plurality of carts in parallel to movement of said base by moving forward and backward in coordination with the base.

A device for dispensing and locking carts disposed in a stack, comprising: a dual-lever mechanism, comprising: a locking lever which is blocking movement of a first cart of a plurality of carts disposed in a stack when in open position; a base adjacent to said locking lever which is movable forward and backward with respect to the stack; and a dispensing lever mounted on the base which is blocking movement of a second cart of the plurality of carts when in open position; and a drive belt driving the plurality of carts in parallel to movement of said base by moving forward and backward in coordination with the base.

Apparatuses, components and methods are provided herein useful to provide assistance to customers and/or workers in a shopping facility. In some embodiments, a shopping facility personal assistance system comprises: a plurality of motorized transport units located in and configured to move through a shopping facility space; a plurality of user interface units, each corresponding to a respective motorized transport unit during use of the respective motorized transport unit; and a central computer system having a network interface such that the central computer system wirelessly communicates with one or both of the plurality of motorized transport units and the plurality of user interface units, wherein the central computer system is configured to control movement of the plurality of motorized transport units through the shopping facility space based at least on inputs from the plurality of user interface units.

Apparatuses, components and methods are provided herein useful to provide assistance to customers and/or workers in a shopping facility. In some embodiments, a shopping facility personal assistance system comprises: a plurality of motorized transport units located in and configured to move through a shopping facility space; a plurality of user interface units, each corresponding to a respective motorized transport unit during use of the respective motorized transport unit; and a central computer system having a network interface such that the central computer system wirelessly communicates with one or both of the plurality of motorized transport units and the plurality of user interface units, wherein the central computer system is configured to control movement of the plurality of motorized transport units through the shopping facility space based at least on inputs from the plurality of user interface units.