System for attaching accessories to a rotary hand tool

Details System for attaching accessories to a rotary hand tool System for attaching accessories to a rotary hand tool

2007-01-23

2007-01-23

Howell, Daniel W. (Department: 3722)

Gear cutting, milling, or planing

Milling

Randomly manipulated, work supported, or work following device

C030S500000, C144S154500, C144S117300, C409S138000

Reexamination Certificate

active

10900955

ABSTRACT:
A system for attaching an accessory attachment to a rotary hand tool of the type having a body with a generally cylindrical nose end portion through which an output shaft passes. The preferred embodiment of the system has an attachment that has an attaching end which matingly engages the nose end portion of the hand tool, and includes a rotatable coupling with inner threads that engage outer threads on the nose portion. The nose portion of the hand tool also has at least one recess which is configured to receive at least one projection on the attachment which accurately angularly positions the attachment on the hand tool. The preferred embodiment has at least one complementary tapered recess and projection combination which facilitates easy insertion of the projection into the recess during attaching.

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