Patent ID: 6276239
Filing Date: 2001-08-21
Classification: B25B

Abstract:
A hand tool for turning a device comprising: an elongated handle, a head joined to the handle, said head having a top surface, a bottom surface, an inside first cylindrical surface and a second cylindrical surface concentric with the first cylindrical surface extended between said top and bottom surfaces, said second cylindrical surface having a diameter larger than the diameter of the first cylindrical surface and open to said top surface of the head, and an annular recess in said bottom surface having a diameter larger than the diameter of the first cylindrical surface, a body located within said head, a drive member secured to the body for accommodating a device, said body having a plurality of spaced convex outer peripheral surfaces and a plurality of U-shaped recesses providing pockets between the spaced outer peripheral surfaces, said pockets being open to the inside first cylindrical surface of the head, said body having linear ramps at the bottoms of the pockets, said ramps having axially extended grooves in the middle portions thereof and opposite ends, said body having end walls extended normally outward from the opposite ends of the ramps to the outer peripheral surfaces of the body, a roller located in each pocket engageable with one of said ramps and the inside cylindrical surface when the roller is adjacent opposite ends of the pocket and disengageable with the inside cylindrical surface when the roller is moved toward the middle portion of the ramp and when a portion of the roller is located in a groove, ring means mounted on the body for selectively shifting the rollers adjacent to the opposite ends of the pockets whereby oscillating movement of the handle causes intermittent rotation of the body and driven member, said ring means having an outer cylindrical surface located in sliding engagement with the second cylindrical surface to position the ring means on the head, first means mounting the ring means on the body, said ring means being movable between first and second positions to move the rollers adjacent to the opposite ends of the pockets, detent means cooperating with the body and ring means for selectively holding the ring means in the first and second positions, second means attached to the body and extended into the annular recess in the bottom surface of the head to cover the bottom ends of the pockets to confine the rollers to the pockets whereby the ring means and first and second means retain the body with the head, said body and drive member having a vertical bore extended through the body and drive member, said drive member having a lateral hole open to the bore, a ball located in said hole engageable with a device to hold the device on the drive member, a stem located in said bore having a first recess for holding the ball in engagement with the device and a second recess for allowing the ball to move out of engagement with the device, biasing means holding the stem in a position wherein the ball is in the first recess, and means for limiting the movement of the stem relative to the body and drive member, said stem being selectively movable to align the first and second recesses with the ball.