Patent ID: 6698177
Filing Date: 2004-03-02
Classification: B21D,F16H,Y10T

Abstract:
A cam mechanism comprising:a metal gear, having a centrally located shaft hole, said metal gear being fit onto a shaft and continuously rotatable thereabout and about a rotational axis; and a pair of eccentric cams integrally formed with said metal gear, said pair of eccentric cams being formed by performing half blanking press processing, wherein said pair of integrally formed eccentric cams comprises a first eccentric cam protecting from a top surface and a second eccentric cam projecting from a bottom surface of said metal gear, each of said first and second cams being completely circumscribed by cam surfaces, and wherein said first and second eccentric cams are disposed on opposite sides of a plane passing through said shaft hole parallel to said rotational axis without intersecting said plane.