Abstract: A cart having a wheel and a cart-computing device communicatively coupled to the wheel, where the cart-computing device receives an electrical signal via the wheel. The electrical signal comprises a communication signal and electrical power. The communication signal corresponds to one or more instructions for controlling an operation of the cart and the electrical power of the electrical signal powers the cart-computing device.

Abstract: The multi-nozzle multi-container fluid spray device includes multiple, for example, three, containers. Each container may hold a different liquid which the user may dispense simultaneously, in a desired combination, or individually. The containers are connected to each other and to a spray handle and spray head in a reversible manner. The spray head includes multiple nozzles, with each nozzle being designed to independently turn on, off, or to dispense a liquid spray at a desired density of liquid particles. The multiple pumps and hoses may be housed within the spray head. Each of the hoses extends from a single pump into one of the containers. Each pump is designed to dispense a liquid from one of the containers through a single nozzle. If a nozzle is turned off, the pump connected to that nozzle does not dispense liquid from the container with which it is connected.

Abstract: A cart having a wheel and a cart-computing device communicatively coupled to the wheel, where the cart-computing device receives an electrical signal via the wheel. The electrical signal comprises a communication signal and electrical power. The communication signal corresponds to one or more instructions for controlling an operation of the cart and the electrical power of the electrical signal powers the cart-computing device.

Abstract: A cart having a wheel, a drive motor coupled to the wheel such that an output of the drive motor causes the wheel to rotate and propel the cart, a cart-computing device communicatively coupled to the drive motor; and one or more sensors communicatively coupled to the cart-computing device, the one or more sensors generating one or more signals in response to a detected event. The cart-computing device receives a communication signal and electrical power via the wheel. The communication signal corresponds to one or more instructions for controlling an operation of the cart. The cart-computing device receives the one or more signals from the one or more sensors. The cart-computing device generates and transmits a control signal to the drive motor to cause the drive motor to operate based on at least one of the one or more signals generated by the one or more sensors or the communication signal.

Abstract: The multi-nozzle multi-container fluid spray device includes multiple, for example, three, containers. Each container may hold a different liquid which the user may dispense simultaneously, in a desired combination, or individually. The containers are connected to each other and to a spray handle and spray head in a reversible manner. The spray head includes multiple nozzles, with each nozzle being designed to independently turn on, off, or to dispense a liquid spray at a desired density of liquid particles. The multiple pumps and hoses may be housed within the spray head. Each of the hoses extends from a single pump into one of the containers. Each pump is designed to dispense a liquid from one of the containers through a single nozzle. If a nozzle is turned off, the pump connected to that nozzle does not dispense liquid from the container with which it is connected.

Abstract: A cart having a wheel, a drive motor coupled to the wheel such that an output of the drive motor causes the wheel to rotate and propel the cart, a cart-computing device communicatively coupled to the drive motor; and one or more sensors communicatively coupled to the cart-computing device, the one or more sensors generating one or more signals in response to a detected event. The cart-computing device receives a communication signal and electrical power via the wheel. The communication signal corresponds to one or more instructions for controlling an operation of the cart. The cart-computing device receives the one or more signals from the one or more sensors. The cart-computing device generates and transmits a control signal to the drive motor to cause the drive motor to operate based on at least one of the one or more signals generated by the one or more sensors or the communication signal.