Patent ID: 8646185

Claim:
A hand tool comprising: a driver having a driving shaft rotatably mounted in the driver and having a gear portion protruding from the driver; and a trigger mounted on the driver and operably connected with the driving shaft for controlling the driving shaft; a body connected with the driver and including a hollow casing having a first opening and a second opening respectively defined in the casing, the first opening provided for connecting with the driver; a driving gear rotatably mounted in the casing, the driving gear having a teeth portion disposed on the driving gear for engaging the gear portion of the driving shaft of the driver and a stub disposed on the driving gear away from an axis of rotation of the driving gear; and a driving unit slidably mounted on the driving gear and having an oblong driving groove diametrically defined in the driving unit for slidably receiving the stub of the driving gear; and a blade assembly having two ends, a driven rod disposed on one of the ends of the blade assembly and a blade disposed on the other end of the blade assembly, the driven rod slidably mounted in the casing from the second opening of the casing and having a connecting portion disposed on the driven rod for connecting with the driving unit, the blade protruding from the second opening of the casing, wherein the connecting portion of the driven rod has a surface connected with the driving unit; multiple bolts are mounted through the connecting portion and are fixed on the driving unit; the casing has a third opening defined in a surface of the casing and a cap mounted in the third opening; and each bolt has a slider mounted in a head of the bolt and protruding from the bolt for slidably abutting the bottom cap.