Abstract: Foot controller apparatus is characterized by providing for remote foot control by a minimum size foot pedal device of the flow of compressed air to an air driven dental handpiece or the like without the necessity of bulky air lines passing through or the incorporation of complicated electrical or mechanical mechanisms in the foot pedal device, as follows. An outwardly biased, depressible foot pedal device includes a diaphragm therein for forming an air sealed chamber which reduces in volume upon depression of the foot pedal device and conveys an air flow through an elongate tube to a diaphragm operated, air modulating, regulator valve positioned away from the foot pedal device and in the compressed air conduit leading to the dental handpiece for pneumatically operating the valve to control the flow of compressed air to the dental handpiece for driving same.

Abstract: Movable power-operated instrument console and treatment chair apparatus, characterized by being selectively individually or simultaneously movable to desired positions for patient treatment, is provided, generally as follows. A treatment chair includes an occupant supporting assembly, a base assembly, and an elevator assembly including drive mechanisms for raising and lowering the occupant supporting assembly. An instrument console has a tray assembly for carrying instruments and the like, a base assembly, and an elevator assembly including drive mechanisms for raising and lowering the tray assembly. Control mechanisms are connected with both of the drive mechanisms for selectively (1) simultaneously raising or lowering or (2) independently raising or lowering of the treatment chair and the instrument console.