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US 5,845,718 AGranted
Resonant oscillating mass-based torquing tool
AssigneeIngersoll-Rand Company
InventorsTimothy R. Cooper, Thomas P. Low
Life of this patent
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Abstract
Disclosed is a low reaction oscillating mass-based torquing tool wherein an oscillating mass is excited into near resonant oscillation by reversing pulses resulting in increased oscillation about a torsion spring to the point where the torque associated with the energy stored in the torsion spring exceeds the torque required to further tighten a fastener and the torque released from the torsion spring tightens the fastener while a biasing torque assures application of the released torque in the tightening direction only.
Claims8
A resonant oscillating mass-based torquing tool comprising:
- a rotatable resonant oscillating mass;
- a means for effecting oscillation of said mass;
- a spring means connecting said oscillating mass to a rotating friction set workpiece;
- a means for effecting a rotation bias with said oscillating mass in one tightening rotational direction of a magnitude sufficient only in combination with a force generated by said oscillating mass in said same one tightening rotational direction to rotate said workpiece in a tightening direction;
- and
- a force generated by said oscillating mass in an opposite rotational direction minus said rotational bias being insufficient to effect rotation of said workpiece in said opposite rotational direction.
3 more elements
Dependencies are inferred from the claim text.