Invention Grant
US09511484B2 Ratcheting screwdriver 有权
棘轮螺丝刀

Ratcheting screwdriver
Abstract:
A ratcheting screwdriver having a drive shaft for transmitting motion and torque as well as two annular drive gears and an annular driven gear, the drive gears and driven gear each have gear-engaging teeth. The drive gears have tabs and the driven gear has a plurality of flat-members. The drive gears and driven gear each have an opening that the drive shaft passes through. The screwdriver also includes at least two actuation balls and one stop ball partially disposed within a ball-housing support member, the ball housing member has an internal cavity to house the components. A user turns handle to transmit rotational torque to the tabs on the drive gears, the gear-engaging teeth of the drive gears transmit torque to the driven gear and the flat-members on the driven gear transmit torque to the drive shaft.
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