Patent ID: 6152845
Filing Date: 2000-11-28
Classification: F16D

Abstract:
A drive power transmission apparatus for transmitting a drive power from a drive power source to a rotation-receiving unit by operatively connecting a first rotating means incorporated in the rotation-receiving unit and a second rotating means incorporated in the drive power source comprising:an elastically deformable means for detachably interconnecting between the first and second rotating means, said elastically deformable means comprising at least one elastically deformable body portion arranged loosely between said first and second rotating means and having opposite ends formed as first and second ends said elastically deformable body portion being torsionally deformed between said first and second ends by a load torque produced by the rotation-receiving unit during the transmission of a drive power from said second to first rotating means; andmeans for detaching the interconnection between said first and second rotating means provided by said elastically deformable means when a torsional deformation of said elastically deformable body portion reaches an extent indicating that a load torque produced by said rotation-receiving unit exceeds a predetermined upper limiting torque determined by a resilience of said elastically deformable means;wherein at least one of said first and second rotating means is provided with a retaining part formed therein as a recess having a bearing surface with which said first end of said elastically deformable body portion is in contact to receive a drive power of said drive power source.