Patent ID: 7443311

Claim:
An interface comprising: (a) a mounting, having an attachment side and a contact side, said attachment side being attachable to a chair; (b) a circumferential rail on the contact side of said mounting; (c) a housing attachable to a chair, having an inside, an outside, and an aperture; (d) a lever, having a switch end and a contact end, the switch end located on the inside of the housing, the lever passing through the aperture, and the contact end in mobile contact with rail and the contact side of the mounting; (e) a switch located inside the housing and in contact with the switch end of the lever so that it is selectively activated by the movement of said lever; (f) a transmitter, linked to the switch and inside said housing; (g) a power source linked to the transmitter and inside said housing; (h) a receiver capable of receiving signals from the transmitter.