Power tool and mechanism

  • US 5,458,206 A
  • Filed: 03/04/1994
  • Issued: 10/17/1995
  • Est. Priority Date: 03/05/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A power tool comprising a housing, a gearbox having an input end capable of being mounted on a motor and an output end adjacent an aperture in the housing, the gearbox being epicyclic and including a torque control ring which, when held stationary with respect to said housing, permits the gearbox to transmit torque and which, when permitted to rotate in the housing, disables torque transmission by the gearbox;

  • and an application mechanism driven by said gearbox, said mechanism comprises;

    a) a substantially cylindrical hollow body;

    b) a chuck drive spindle journalled in said body and defining therebetween an annular space;

    c) means limiting axial movement of said spindle in said body towards said gearbox;

    d) a rotary ratchet plate fixed on said spindle;

    e) a facing, rotationally fixed ratchet plate in said body;

    f) means to engage said ratchet plates together such that on rotation of the spindle a reciprocating action is imposed thereon, said means to engage including a lever projecting through a slot in said body;

    g) resiliently biased, adjustable actuating means mounted on said body to selectively engage said torque control clutch ring, said lever projecting through said actuating means.

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