Wrench having a socket with circumferentially spaced recesses
A wrench includes an opening having a side wall defined by circumferentially alternating contact surfaces and recesses. Each recess includes a concave bottom surface and a pair of concave edge surfaces extending from respective ends of the bottom surface. The bottom surface has a radius of curvature...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A wrench includes an opening having a side wall defined by circumferentially alternating contact surfaces and recesses. Each recess includes a concave bottom surface and a pair of concave edge surfaces extending from respective ends of the bottom surface. The bottom surface has a radius of curvature larger than a radius of curvature of the edge surfaces and smaller than a distance from a center of the opening to a midpoint of the bottom surface, whereby a thickness of the wrench increases progressively on opposite sides of a midpoint of the bottom surface. Imaginary extensions of the contact surfaces disposed at opposite ends of each recess intersect one another substantially at the midpoint of the bottom surface. |
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