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Spindle press

  • US 4,913,272 A
  • Filed: 03/13/1989
  • Issued: 04/03/1990
  • Est. Priority Date: 10/11/1979
  • Status: Expired due to Fees
First Claim
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1. A clutch for a spindle press having a flywheel and spindle, comprising,a driven flywheel and the flywheel always rotates in the same direction,a rotational axis of the flywheel,wherein the axis is simultaneously an axis of the spindle,a thrust plate mounted on an end of the spindle and being rotatable within a space provided in the flywheel,friction pads connected to opposite sides of the thrust plate at upper and lower surfaces of the thrust plate,a piston slideable received in a cylindrical chamber formed in the flywheel and being axially movable above the thrust plate,a housing which encloses the cylindrical chamber for the piston,means for preventing relative rotation between the piston and the flywheel,wherein the piston has a flange extending radially outwardly from an end of the piston facing the thrust plate,a spacer connected to the flange and extending outwardly therefrom through connector means for allowing axial displacement and limited relative rotational movement of the spacer,two friction surfaces opposite the friction pads, one friction surface being an interior surface of the flywheel and the other being a lower surface of the spacer,wherein the piston is drivable under fluid pressure downwardly to engagement of the friction pads with the friction surfaces, andwherein torque transferrable between the piston and spacer through the connector means is smaller than torque transferrable between the friction pads and friction surfaces, whereby a spindle delay results in relative axial movement between the spacer and piston to effect instantaneous clutch release.

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