Patent ID: 7118018

Claim:
A suspension mechanism for a fan motor of a combustion chamber in a combustion-powered tool for driving a fastener into a workpiece, the fan motor disposed within a cylinder head, the cylinder head defining a cavity including a floor, the fan motor being disposed within the cavity such that, in a rest position, a lower end of a sidewall of the motor is disposed above and spaced from the floor, such that the cylinder head substantially encloses the fan motor, the tool generating an acceleration of the fan motor in an axial direction away from the workpiece upon a combustion in the chamber and a subsequent reciprocal axial acceleration of the fan motor, at least one of the accelerations causing the fan motor to oscillate relative to the tool, comprising: an elastic motor mount disposed within the tool and relative to the motor to directly receive and absorb force along the axial direction to counteract and dampen the acceleration in the axial direction of the motor relative to the floor; and a restraining member mounted to the cylinder head of the tool and disposed relative to said elastic motor mount to secure said elastic member relative to the cylinder head, thereby resisting upward bias of said elastic member in response to the acceleration of the fan motor; wherein said elastic motor mount is disposed directly between the fan motor and the cylinder head; wherein said elastic motor mount is in direct contact with the motor.