Patent ID: 8602403
Filing Date: 2013-12-10
Classification: B25B,F16B,F16M

Abstract:
1. A clamping device comprising: a first cam assembly comprising a hollow first support, opposite first and second work piece clamping members partially disposed in the first support with a first slot defined between the first and second work piece clamping members, a bifurcated first cam lever disposed on both sides of the first and second work piece clamping members with the first support disposed in the first cam lever, and an annular first flange extending from an outer surface of the first support and including an annular latching groove at an open end; a second cam assembly comprising a hollow second support, opposite third and fourth work piece clamping members partially disposed in the second support with a second slot defined between the third and fourth work piece clamping members, a bifurcated second cam lever disposed on both sides of the third and fourth work piece clamping members with the second support disposed in the second cam lever, and an annular second flange extending from an outer surface of the second support and including an annular reduction at an open end, an annular projection distal the reduction, and external threads wherein the second flange is put on the first flange with the projection rotatably disposed in the latching groove; and a fastening member comprising a partially threaded inner surface threadedly secured to the external threads, and a truncated conic section extending from one end of the partially threaded inner surface to an open end proximate the first cam assembly; wherein a rotation of the fastening member along a predetermined direction urges the truncated conic section against the reduction which in turn urges against the first flange, thereby fastening the first cam assembly, the second cam assembly, and the fastening member together; wherein a clockwise rotation of the first cam lever pushes the first work piece clamping member and the second work piece clamping member toward each other by cooperating with the first support; and wherein a clockwise rotation of the second cam lever pushes the third work piece clamping member and the fourth work piece clamping member toward each other by cooperating with the second support.