Patent ID: 9636763
Date: 2017-05-02
CPC Classifications: B23D,B26D,B27B,F16B,Y10T

Claim:
1. A tool-free blade change system, comprising: a main body including a keyed bore and plurality of body teeth; an arbor bolt including a keyed portion mated with the keyed bore to restrict rotation of the main body with respect to the arbor bolt while allowing for axial movement of the main body with respect to the arbor bolt such that a first surface of the keyed portion is substantially rotationally fixed with respect to a second surface of the keyed bore; a blade washer defining a plurality of washer teeth configured to enmesh with the plurality of body teeth so as restrict rotation of the main body with respect to the blade washer in a first direction while allowing rotation of the main body with respect to the blade washer in a second direction; and a biasing member configured to bias the main body downwardly toward the blade washer, wherein the main body is axially movable with respect to the blade washer between a first position whereat the plurality of body teeth are enmeshed with the plurality of washer teeth with the mated keyed portion and keyed bore restricting relative motion between the arbor bolt and the main body in both the first direction and the second direction, and a second position whereat the plurality of body teeth are spaced apart from the plurality of washer teeth.