A powered painting system includes a motor driven paint pump controlled by a radio signal receiver associated with it. A radio frequency transmitter mounts to the wrist of the painter, and a small clip with a button-operated switch thereon is provided for mounting to the finger of the painter, with the...http://www.google.co.uk/patents/US4722625?utm_source=gb-gplus-sharePatent US4722625 - Remote control device for powered painting system
