A brake apparatus is disclosed for a motor driven saw blade, and includes a hub threadably attached at one end along its centerline axis to a drive motor, and attached to a saw blade via a flange formed on the other end of said hub, said hub having the shape of a cylinder. Also included are two brake...http://www.google.fr/patents/US4145940?utm_source=gb-gplus-shareBrevet US4145940 - Brake apparatus for a motor driven saw blade