Impact mechanism for an impact wrench
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United States of America Patent
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Oct 25, 2011
Grant Date -
Jan 15, 2009
app pub date -
Apr 13, 2005
filing date -
Apr 13, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
An impact mechanism (12) for an impact wrench comprises an anvil (8) with a middle portion (13), at least one abutment surface (14) radially protruding therefrom, which forms at least one abutment surface (15), a hammer (4) with an impact surface (16) suitable to give rotational pulses to the anvil (8) by the impact surface (16) hitting the abutment surface (15). The anvil (8) comprises a first connection area (17) connecting the abutment portion (14) to the middle portion (13) within the axial extension of the abutment surface (15) and the middle portion (13) and a reinforcement rib (18) axially arranged out of the abutment surfaces (15) that connects the abutment portion (14) to the middle portion (13) of the anvil (8), thereby forming a second connecting area.
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