Tool collet and control means

Details Tool collet and control means Tool collet and control means

1981-11-02

1984-04-10

Kazenske, E. R.

Tool driving or impacting

Means to drive tool about an axis

Means to hold and relatively rotate sections of tool shaft

173167, 128 92EC, A61B 1718

Patent

active

044415630

ABSTRACT:
A power tool, such as a surgical drill, has a tool element retained in a collet coupled to the output spindle of the tool. Resilient member constantly maintains the collet in its closed position. Upon rotation of the spindle in a reverse direction, opposite to its normal driving direction, a cam is actuated to open the collet against the force of the resilient member, thereby facilitating removal of the tool element from the collet. Preferably, the tool is of the cordless type and has a reversible electric motor controlled by a pair of triggers mounted on the pistol-grip handle for the tool. The triggers are conveniently disposed adjacent to each other and are easily distinguishable from one another, thereby providing for a convenient one-hand operation of the tool.

REFERENCES:
patent: 2735687 (1956-02-01), Cox
patent: 3712386 (1973-01-01), Peters
patent: 3718340 (1973-02-01), Stewart
patent: 3724563 (1973-04-01), Wickham et al.
patent: 4109735 (1978-08-01), Bent
patent: 4346765 (1982-08-01), Workman, Jr.

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