Patent ID: 7210720

Claim:
A fluid-powered tool assembly, usable with a support platform having an arm, the tool assembly comprising: a connection member connectable to the arm; a first tool member having left and right side portions; a second tool member positioned to cooperate with said first tool member, said second tool member having left and right side portions; a body having a longitudinal axis and left and right longitudinal end portions, said body having a grooved portion within said body, said body being attached to said connection member for movement of said body with said connection member as a unit, said body having said left end portion thereof positioned toward said left side portions of said first and second tool members and said right end portion thereof positioned toward said right side portions of said first and second tool members; a first shaft rotatably disposed within said body at said body left end portion and in general alignment with said body axis for rotation about said body axis, said first shaft having a grooved portion positioned toward said body left end portion and a left end portion attached to said left side portion of said first tool member for rotational movement of said first tool member with said first shaft as a unit; a second shaft rotatably disposed within said body at said body right end portion and in general alignment with said body axis for rotation about said body axis, said second shaft having a grooved portion positioned toward said body right end portion and a right end portion attached to said right side portion of said second tool member for rotational movement of said second tool member with said second shaft as a unit; and a linear-to-rotary force transmitting member mounted for reciprocal longitudinal movement within said body in response to selective application of pressurized fluid thereto, said force transmitting member having a grooved first portion positioned within said body engaging said first shaft grooved portion, a grooved second portion positioned within said body engaging said second shaft grooved portion and a grooved third portion positioned within said body engaging said body grooved portion to translate longitudinal movement of said force transmitting member in a first longitudinal direction into counter rotational movement of said first and said second shafts about said body axis relative to said body to move said first and second tool members toward each other, and to translate longitudinal movement of said force transmitting member in a second longitudinal direction opposite said first longitudinal direction into counter rotational movement of said first and said second shafts about said body axis relative to said body to move said first and second tool members away from each other.