REVERSING MECHANISM FOR ELECTRIC MOTORS

摘要

A power tool has a mechanism to reverse a motor. The mechanism includes a first member secured with the motor surrounding the motor commutator. A pair of electrical contacts are supported in the first member. A second member is rotatable on the fist member. The second member carries a pair of brush holders which include electrical contacts. As the second membe r is rotated in the first member, the electrical contacts of the brush holders , as well as the electrical contacts in the first member, electrically couple wit h one another from a first position to a second position which relates to a forwar d and reverse direction of the motor. A lever moves the second member between its first and second positions.