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US 11,229,992 B2Granted
Wrench head
AssigneeThe Boeing Company
InventorDonald W. Coffland
Life of this patent
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Abstract
A wrench head comprises a working axis, a first jaw, a second jaw, and a third jaw. The first jaw comprises first-jaw arcuate convex contact surfaces. The second jaw, is coupled with and pivotable relative to the first jaw, and comprises second-jaw arcuate convex contact surfaces. The third jaw, is coupled with and pivotable relative to the second jaw, and comprises third-jaw arcuate convex contact surfaces.
Claims20
A wrench head, comprising:
- a working axis;
- a first jaw, comprising first-jaw arcuate convex contact surfaces;
- a second jaw, coupled with the first jaw, pivotable relative to the first jaw, and comprising second-jaw arcuate convex contact surfaces;
- and
- a third jaw, coupled with the second jaw, pivotable relative to the second jaw, and comprising third-jaw arcuate convex contact surfaces;
- and
- wherein:
- the first-jaw arcuate convex contact surfaces are three or more in number;
- a first-jaw virtual circle is perpendicular to the first-jaw arcuate convex contact surfaces, and has a single point contact with each of the first-jaw arcuate convex contact surfaces, is centered about the working axis and is perpendicular to the working axis;
- when the second jaw is in a closed second-jaw orientation relative to the first jaw, the first-jaw virtual circle is perpendicular to the second-jaw arcuate convex contact surfaces and has a single point contact with each of the second-jaw arcuate convex contact surfaces;
- and
- when the second jaw is in the closed second-jaw orientation relative to the first jaw and the third jaw is in a closed third-jaw orientation relative to the second jaw, the first-jaw virtual circle is perpendicular to the third-jaw arcuate convex contact surfaces and has a single point contact with each of the third-jaw arcuate convex contact surfaces.
9 more elements
Dependencies are inferred from the claim text.