Invention Grant
US08011445B2 Portable power tool, in particular a drilling hammer and/or impact hammer 有权
便携式电动工具,特别是钻锤和/或冲击锤

  • Patent Title: Portable power tool, in particular a drilling hammer and/or impact hammer
  • Patent Title (中): 便携式电动工具,特别是钻锤和/或冲击锤
  • Application No.: US11220112
    Application Date: 2005-09-06
  • Publication No.: US08011445B2
    Publication Date: 2011-09-06
  • Inventor: Achim DuesselbergKurt Sieber
  • Applicant: Achim DuesselbergKurt Sieber
  • Applicant Address: DE Stuttgart
  • Assignee: Robert Bosch GmbH
  • Current Assignee: Robert Bosch GmbH
  • Current Assignee Address: DE Stuttgart
  • Agent Michael J. Striker
  • Priority: DE102004044499 20040915
  • Main IPC: B23B45/00
  • IPC: B23B45/00
Portable power tool, in particular a drilling hammer and/or impact hammer
Abstract:
A portable power tool has a housing, a rotating sleeve provided for rotatably driving a tool and a rotatably supported in the housing by at least one bearing, a driving gear-wheel installed on the rotating sleeve in a freely rotating manner and drivable by a motor, a safety clutch that couples the driving gear-wheel with the rotating sleeve in a rotation-proof manner, the safety clutch having two clutch members that are slippable, with one of the clutch members being assigned to the driving gear-wheel and the other clutch member being assigned to the rotating sleeve in both cases in a rotation-proof manner, and with a coupling sleeve providing a force against which the clutch members are slippable when a limit torque is exceeded, the bearing being seated on the rotating sleeve in an axially displaceable manner and loaded by the coupling sleeve of the safety clutch against an axial stop of the rotating sleeve.
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