Patent ID: 6062960
Filing Date: 2000-05-16
Classification: B24B

Abstract:
An orbital tool comprising:a housing;a motor oriented within the housing and having a rotatable motor shaft;an eccentric drive member pivotally supported relative to the housing and rotatably driven by the motor shaft about a drive axis, the eccentric drive member having an output portion aligned along an eccentric axis generally parallel to and radially offset from the drive axis;a working member having an input portion coaxially aligned along the eccentric axis of the output member and pivotally engaging the output portion of the eccentric drive member, a mating surface, and a working surface perpendicular to the drive axis and extending radially outboard of the working member input portion; andan annular pivot control member including an annular central hub having a mating surface, an annular flange engaging the housing at a location spaced from the central hub, and a web extending circumferentially about the drive and eccentric axes between the flange and the central hub, the central hub mating surface cooperating with the working member mating surface to control pivotal movement of the working member relative to the housing while the web enables the working member input portion to orbit about the drive axis as the eccentric drive member is rotated by the motor shaft.