Patent GB-1166665-A (GB)
Title: Dental Equipment Stand
IPC: A61C17/032
Filed: 1966-10-12
Abstract: 1,166,665. Dental stands. DENTISTS' SUPPLY CO. OF NEW YORK. 12 Oct., 1966 [20 Oct., 1965J, No. 45698/66. Heading A5R. A dental equipment stand comprises a cabinet supporting a carriage 28 which is movable horizontally between a retracted position within the cabinet and an extended operative position, the carriage detachably supporting a plurality of interchangeable modules each of which includes a dental instrument and means controlling the supply of air and water thereto. The modules 384, 386, 388, 390, '394, 396 supporting dental instruments are the .same width but one module 208 (supporting suction apparatus) is twice the width of the others. Each module comprises a support frame 128 having a front panel 134, the panels of adjacent modules forming a composite front panel of the apparatus when the modules are assembled side by side in a carriage 28 supported by a cabinet 10. In a module supporting a low speed air turbine drill 164 (Figure 9) in a collar 162, a water control valve 150 operated by rotating a knob 154, an air pressure regulating solenoid valve 170, an oil mist generating unit 172 for connection to the turbine bearings, a pressure gauge 174, and an' air supply solenoid control valve 176 are mounted in the frame 128. The valves are rendered operable by a conditioning switch 160 actuated by pulling the knob 154 and are opened for the supply of air and water to the drill by closure of 'a 'switch 182 as the instrument is withdrawn, from 'its supporting collar 162. Air and water are supplied to the drill through a flexible hose 166 normally coiled on a reel 168, the reel being connected to both the frame 128 and the carriage 28 so that the module may be removed from the carriage with or without the reel. Similar modules are provided for high speed air turbine drills (Figures 17 and 19) a syringe and an electric device to which a cautery, pulp tester or lamp may be attached. The suction device module (208, Figure 21) supports a cuspidor (224), to which a saliva ejector may be attached and a vacuum exhaust device (232) for removing particles from the mouth, these devices being connected to a vacuum pump (332) through valves which are operated by switches (242, 250) closed only when the devices are withdrawn from the module. The carriage 28 is supported in a cabinet 10 and is elevated from the cabinet and thereafter projected horizontally by mechanism similar to that described in . Specification 1,082,299..The cabinet 10 is connected to mains water and electricity and an air compressor and. houses electrical control circuits (Figures 23 to 27), the vacuum pump (332) and' water heater (312). The modules are connected as required to manifolds (266, 268; 270, 272, Figure 12) supplied with high pressure air. lower pressure air, cold water and warm water respectively through flexible tube coils (282, 284, 286, 288) which expand when the carriage and the manifolds supported thereby are elevated and projected forwardly in use. A foot-operated switch (180, Figure 15) is connected to the cabinet and comprises a rotary lever (190) for operating a switch (194) through a cam (192) and a treadle (198) for operating a..switch 200. The switch (194) controls the actuation of a selected dental instrument when the controls have been set and the switch (200) controls the supply of air through a valve .(202, Figure 17), to a chip-blowing nozzle of the air turbine drills. The apparatus may be operated by fluid power instead of electrical power.