Pulley drive control system
AssigneeLovejoy, Inc.
InventorGerald N. O'Berto
Life of this patent
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Abstract
A pulley drive system utilizes a driven pulley and a driving pulley and a belt connecting the pulleys. The driving pulley has spaced discs and there are means for varying the spacing between the discs to vary the speed of the belt driving the driven pulley. Speed sensing means are positioned adjacent the driven pulley to provide a signal representative of the speed of the driven pulley. The speed sensing signal is utilized in a regulating circuit to control the means for varying the spacing between the discs to thus control the speed of the belt.
Claims6
A pulley drive control system including a driven pulley, a driving pulley, belt means connecting said pulleys, said driving pulley having spaced discs, means for varying the spacing between said discs to vary the speed of said belt means,
- speed sensing means adjacent said driven pulley for providing an electrical signal representative of the speed of said driven pulley, and regulating circuit means connected to said sensing means for using said speed signal to provide an adjustment signal to operate said means for varying the disc spacing, said regulating circuit means including comparison circuit means for comparing the electrical signal representative of the speed of said driven pulley with a signal representative of the desired speed of said driven pulley, and means for varying the amplitude of said signal representative of the desired speed of said driven pulley.
Dependencies are inferred from the claim text.