Patents Assigned to Thomas J. Crowe
  • Air-expanded mandrel having means to equalize expansion to obtain concentric chucking
    Patent number: 4229014
    Abstract: A fluid actuated expanding mandrel or internal chuck is provided with means including very stiff springs to cause the expanding members to move outwardly a substantially equal amount, whereby a roll or workpiece is concentrically mounted, despite looseness between the bore of the roll or workpiece and the mandrel or internal chuck. A correspondingly inverted arrangement affords concentric chucking on the outer diameter of solid workpieces.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: October 21, 1980
    Assignee: Thomas J. Crowe
    Inventor: Thomas J. Crowe