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  • The dental handpiece—a history of its development *
    During the 1920s,with the establishment of satis- factory production models of straight and contra-angled handpieces and of their cord arm drives from ball electric motors operated by variable - speed foot switches , dental equipment manufacturers were able to concentrate on the…
  • Advances and Refinements in Phonosurgery
    variable speed -control- foot switch mode is used.
  • Fabrication Methods for Precision Optics
    A foot switch activates the spindle and permits speed variations of 10: I.
  • Welding Positioner Plans
    You need variable speed motor controlled by a foot pedal or motor reostat switch , a chuck mounted on a spindle with some kind of bearings and forward/reverse option.
  • Intraoperative high-flow antegrade irrigation
    The apparatus (Fig. 1) consists of spe- cially designed irrigating instruments and a mobile unit containing irrigant storage reservoirs, a variable speed peristaltic pump that can be regulated by means of a foot switch potentiometer, and collection containers that can be connected…
  • Calibration of Control Rods1
    This valve, operated by a cam switch driven by a variable speed motor, is located within a few feet of the drive unit to minimize the air travel time .
  • A revised group exercise program for osteoarthritis of the knee
    Pain levels in various functional situations were assessed on visual analogue scales, physical function with the Stanford Health Assessment Questionnaire, and quantitative gait variables at a normal and a fast self‐selected speed with an electric foot switch walkway.
  • A revised group exercise program for osteoarthritis of the knee.
    Pain levels in various functional situations were assessed on visual analogue scales, physical function with the Stanford Health Assessment Questionnaire, and quantitative gait variables at a normal and a fast self-selected speed with an electric foot switch walkway.
  • Surgical Management of Sleep Apnea and Snoring
    At all settings the foot pedal or hand control switch offers two blade speeds of ‘‘Full’’ and ‘‘ Variable ,’’ which are used for cutting and coagulation, respectively.
  • Microbial Toxins
    Variable speed tissue homogenizer with Teflon™ pestle to fit 1.5-mL microcentrifuge tubes and with foot switch .