FOOL-PROOF TOOL COUPLING HAVING AXIALLY SPACED APART DRIVE MEMBERS AND ASSEMBLY METHOD THEREFOR
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United States of America
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Issued Date -
Jan 23, 2020
app pub date -
Jul 18, 2018
filing date -
Jul 18, 2018
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Abstract
A tool coupling includes a first member, having a male coupling portion extending along a first axis, and a second member, having a female coupling portion extending along a second axis. The male coupling portion has front and rear drive members defining male front and rear footprints in respective first and second transverse mating planes. The female coupling portion has front and rear drive passages defining front and rear peripheral profiles in respective first and second transverse passage planes. The front and rear drive members respectively occupy the front and rear drive passages, and at least one of the front and rear drive members prevents rotation of the second member about the second axis. On imaginary rotation of the front peripheral profile by any angle about the second axis and axial projection thereof, the front peripheral profile overlaps (i.e., at least partially crosses) the rear footprint.
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