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CONCENTRIC ASSEMBLY FOR PORTABLE ELECTRIC ROUTER

  • US 3,767,948 A
  • Filed: 11/13/1972
  • Issued: 10/23/1973
  • Est. Priority Date: 11/13/1972
  • Status: Expired due to Term
First Claim
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1. A portable electric router for driving a bit comprising:

  • a. a base having a cylindrical sleeve terminating in a bottom flange for work engaging, b. a cylindrical motor housing axially adjustably disposed within the sleeve, c. a motor having an armature shaft centrally journaled within the motor housing with one end of the shaft extending therefrom to carry the bit, d. a pad formed on one side internally of the sleeve and having a curved surface, the arc of which is set off from a radius substantially equal to the radius measured from the axis of the armature shaft to the outer periphery of the motor housing, and e. a clamping means adjustably extending through the sleeve on the side opposite the pad to force the motor housing against the pad to lock the motor housing in adjusted axial position and to place the motor housing in concentric position.

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