Patent ID: 9707669
Date: 2017-07-18
CPC Classifications: B25B

Claim:
1. A hammer assembly for a motorized tool, comprising: a cage configured to be rotatingly driven by a rotor of the motorized tool; a first hammer pivotally seated in the cage, the first hammer comprising a first center aperture, a first strike tooth, and a first reload tooth; a first pin and a second pin both seated in the cage, the first pin configured to serve as a pivot about which the first hammer pivots and the second pin comprising a first portion configured to limit motion of the first hammer; and a drive shaft extending through the first center aperture of the first hammer and configured to be rotatingly driven by the rotor of the motorized tool, the drive shaft including a first anvil configured for being struck by the first strike tooth upon forward rotation of the rotor; wherein the first hammer and the second pin comprise a magnetic material, a south magnetic pole, and a north magnetic pole, wherein the first hammer and the second pin are seated in the cage such that the north magnetic pole of the second pin lies at the first portion of the second pin, such that, after the first anvil is struck by the first strike tooth the first portion of the second pin lies adjacent the north magnetic pole of the first hammer and away from the south magnetic pole of the first hammer to magnetically assist the first hammer returning to a pre-strike condition.