Abstract: A system adapting an elevating device for wireless remote operation from a mobile device is disclosed. The system includes a first interface for connecting to a panel of the elevator, the panel comprising at least one elevator button, the module comprising a relay switch interconnected to the elevator button; a transceiver for receiving command data wirelessly from the mobile device, the transceiver interconnected to the first interface, and a controller interconnected to the interface and to the transceiver. In response to receiving the command data through the transceiver, the controller sends a corresponding command signal via said interface to the panel by activating the relay switch.

Abstract: An attachment for a bicycle serving as a hitch for towing a small trailer or coaster. The bicycle hitch can be attached to any standard bicycle without modifying the same and is adjustable to suit bicycles of various wheel diameters. The bicycle hitch includes a curved tubular member subtending substantially a quarter circle, adapted to spacedly surround the top back quarter portion of the rear driving wheel of a bicycle in the plane of said rear wheel and substantially coaxial therewith. This curved member is adjustably attached to the bicycle frame or to the seat support rod at its front end, while its rear end carries a standard ball member for hitching purposes.