Abstract: This invention pertains to a dental operatory console system including one or more fluid control valves for driving air and water to be delivered to dental handpieces supported for ready removal from a pivoted holder to provide adjustable angular positioning of the handpiece, one of such pivoted holders being adjacent each control valve and including a lockout for the valve plunger when the handpiece is removed from the holder, such as when changing burs, to prevent accidental operation of the air and water valve for delivery to the handpiece. The pivoted holder is readily removable for servicing the valve and the fluid circuit for water and air between a source of the same and a plurality of handpieces in the console includes shuttle valves to permit the use of a single air pressure gage for the system rather than a gage for each handpiece as in conventional multiple-handpiece consoles.

Abstract: An operatory stool having an arcuate rest member supported above the seat by a pair of parallel upstanding support members pivotally connected to and between said rest and seat to permit lateral adjustment of said rest relative to said seat, and manually operable clutch mechanism on said rest member operable relative to the upper ends of said upstanding support members to maintain said rest member in a desired adjusted position relative to said seat.