Socket wrench opening

Details Socket wrench opening Socket wrench opening

1992-07-13

1994-02-08

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

81186, 811244, B25B 1306

Patent

active

052840735

ABSTRACT:
A wrench for turning a fastener nut having a central axis and an even-numbered plurality of flat bounding surfaces parallel to the fastener access wherein diametrically opposite pairs of surfaces are parallel to each other and the bounding surfaces intersect in adjacent pairs to form fastener corners. The wrench includes a fastener nut socket defined by a central socket axis. The socket includes a plurality of uniformly spaced peripherally and radially disposed sides and a plurality of uniformly spaced fastener corner clearance recesses disposed between sides. Each side includes a planar surface and a pair of complimentary surfaces, wherein a complimentary surface diverges outwardly from each end of the planar surface at an angle of approximately three degrees (3.degree.). The planar surface has a length approximately equal to 0.35 times (.times.) the minor diameter of the fastener nut to be driven. Each corner recess is comprised of a radiused surface, the complimentary surfaces being dimensioned to intersect the radiused surface.

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