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Power tool cooling

  • US 20060144602A1
  • Filed: 12/29/2005
  • Published: 07/06/2006
  • Est. Priority Date: 12/23/2004
  • Status: Active Grant
First Claim
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1. A power tool comprising:

  • an outer housing for gripping by a user;

    a motor disposed in the outer housing and having an output shaft for actuating a working member of the tool;

    a cooling fan adapted to be driven by the motor for causing air to flow past the motor; and

    a transmission mechanism adapted to actuate said working member in response to rotation of said output shaft, and having an inner housing for supporting the transmission mechanism in the outer housing, wherein the outer housing has at least one air inlet and at least one air outlet and the cooling fan is adapted to cause air to flow from at least one inlet between said inner and outer housing to said motor.

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