Patent ID: 6848186

Claim:
A blade clamping device comprising: a driving shaft having an extension extending from a distal end thereof; a base member having a passage defined therethrough, the driving shaft securely received in the passage and a blade connected to the driving shaft, a first opening defined through a side of the base member and communicating with the passage; a cam member pivotably connected to the base member and a first end of the cam member being a cam head which is inserted in the first opening and removably contacting the blade, a second end of the cam member being a bar, a first torsion spring connected to the base member to maintain the cam head to contact the blade; a casing having a second opening defined in a side thereof and a lever pivotably engaged with the second opening, the lever including a handle and a pushing end, the pushing end of the lever located beneath the bar of the cam member, the cam head of the cam member being pivoted away from the blade by the pushing end by pivoting the lever; and two lugs extend from the base member with the first opening located therebetween, a tube extending from one of the two lugs and a slit defined in the tube, the first torsion spring mounted to the tube and one of two legs of the first torsion spring engaged with the slit and the other leg pressing on the bar of the cam member.