Patent ID: 7975575

Claim:
A rotary wrench comprising, in combination: a handle including a gripping portion and a clamping portion arranged along a first axis, with the clamping portion including first and second arms having a spacing along a second axis perpendicular to the first axis, with the first arm including a first holding portion having a first hole, with the second arm including a second holding portion having a second hole, with the first holding portion including a first positioning section; a head including a longitudinal axis perpendicular to the second axis, with the head including first and second sides spaced along the second axis and on opposite sides of the longitudinal axis, with first and second axles respectively formed on the first and second sides, with the first and second axles rotatably engaged in the first and second holes, with the first side of the head including a first positioning portion releasably engagable with the first positioning section of the first holding portion so that the head is rotatable relative to the handle about the second axis and positionable relative to the second axis in one of a plurality of angular positions surrounding the second axis, with the handle being operable to rotate the head about the longitudinal axis for driving an object, with the first holding portion including an inner face facing the head, with the first holding portion further including an outer face spaced from the inner face along the second axis and facing away from the head, with the first positioning section formed on the inner face of the first holding portion, with the head including an outer periphery having the first and second sides, and with the first positioning portion formed on the first side of the outer periphery of the head; and an adjusting member mounted to the first and second arms, with the adjusting member operable to adjust the spacing between the first and second arms to move the first and second arms between a clamping position clamping the head and a releasing position not clamping the head; wherein when the first and second arms are in the releasing position, the first positioning portion of the head is disengaged from the first positioning section of the first holding portion, the head is rotatable about the second axis, allowing adjustment of an angle between the longitudinal axis of the head and the first axis, and wherein when the first and second arms are in the clamping position, the first positioning portion of the head is engaged with the first positioning section of the first holding portion to retain the head in one of the plurality of angular positions, the head is not rotatable about the second axis, not allowing adjustment of the angle between the longitudinal axis of the head and the first axis.