Importance

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Abstract

A rotary tool includes a housing, a drive shaft positioned within the housing, and a bit holder. The bit holder is positioned adjacent a distal end of the housing and is driven by rotation of the drive shaft. The rotary tool also includes a wrench assembly coaxially movable along the longitudinal axis and selectively engageable with the bit holder, a groove positioned on one of the housing and the wrench assembly, and a protrusion positioned on the other of the housing and the wrench assembly. The protrusion engages the groove and retaining the wrench assembly against axial movement while the wrench assembly is in a first position, and the protrusion is axially spaced apart from the groove while the wrench assembly is in a second position.

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First Claim