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US 6,581,697 B1Granted
Power impact tool torque apparatus
AssigneeChicago Pneumatic Tool Company
InventorDavid A. Giardino
Life of this patent
Estimating the term…
Abstract
A pneumatic tool apparatus, a pneumatic tool, and a method of making and using a pneumatic tool apparatus is disclosed. The apparatus has an inner torsion bar and an outer tube which has recesses which allow the apparatus to provide more torque in one direction of rotation than in the other direction of rotation.
Claims25
An apparatus for a power impact tool comprising:
- a torsion bar;
- an outer tube operatively attached to said torsion bar, said outer tube having recesses shaped to allow greater torque transmission in a first direction than in a second direction.
An apparatus comprising:
- an outer tube having a plurality of inwardly extending driving surfaces;
- a torsion bar with a plurality of receiving surfaces on the exterior thereof;
- wherein said driving surfaces are in driving engagement with said receiving surfaces upon rotation in a first direction only.
An apparatus comprising:
- a torsional spring with a plurality of extensions on an exterior thereof;
- an outer cylinder having a bore with a plurality of inwardly extending recesses on an interior surface thereof;
- wherein said plurality of inwardly extending recesses allow greater purchase with said torsional spring upon a nut loosening rotation.
A power impact tool comprising:
- a housing;
- an air motor within said housing;
- a torsion bar operatively attached to said air motor;
- and
- an outer tube operatively attached to said torsion bar, said outer tube having recesses shaped to allow greater torque in a first direction than in a second direction.
2 more elements
A power impact tool comprising:
- a housing;
- an air motor contained within said housing, wherein said air motor provides a first torque output;
- and
- a torque control system comprising an outer tube surrounding a torsion bar, wherein said torque control system is operatively attached to said air motor, wherein said torque control system changes said first torque output to a second torque output.
1 more element
A method of making an apparatus for a power impact tool comprising:
- providing a torsion bar;
- and
- attaching an outer tube to said torsion bar, said outer tube having recesses shaped to allow more torque transmission in a first direction of rotation than in a second direction of rotation.
A method of using a power impact tool apparatus comprising:
- providing a torsion bar;
- attaching an outer tube to said torsion bar, said outer tube having recesses being shaped to allow more torque transmission in a first direction of rotation than in a second direction;
- and
- attaching said torsion bar to a workpiece.
1 more element
Dependencies are inferred from the claim text.