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Impact Tools With Rigidly Coupled Impact Mechanisms

  • US 20190321958A1
  • Filed: 04/20/2018
  • Published: 10/24/2019
  • Est. Priority Date: 04/20/2018
  • Status: Active Grant
First Claim
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1. An impact tool comprising:

  • an impact mechanism comprising a hammer and an anvil, the hammer being configured to rotate about a first axis and to periodically impact the anvil to drive rotation of the anvil about the first axis;

    an electric motor comprising a rotor that is directly coupled to the impact mechanism, the electric motor being configured to drive rotation of the hammer about the first axis;

    wherein the motor rotates the hammer in a first direction, and the hammer causes the rotor to periodically stop rotating in the first direction when the hammer periodically impacts the anvil; and

    a control circuit that supplies a current to the electric motor and limits the current supplied to the electric motor.

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