Patents Examined by Steve Bishop
  • Rotatable spindle and tool holding adapter
    Patent number: 4722645
    Abstract: A power driven rotatable spindle is provided with a conical recess tapering inwardly from one end of the spindle to receive a mating conical shaft of a tool holding adapter at a coaxial operative position whereat the spindle and adapter are splined for rotation as a unit. The adapter is moved axially to and from the operative position by interengageable screw threaded portions of the adapter and collar, which latter is rotatable but not axially movable on the spindle.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: February 2, 1988
    Assignee: NO-MA Engineering Incorporated
    Inventor: Donald J. Regan