Self-aligning handheld tapping tool

Details Self-aligning handheld tapping tool Self-aligning handheld tapping tool

2006-03-21

2006-03-21

Ashley, Boyer D. (Department: 3722)

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

C408S123000, C408S222000, C470S198000

Reexamination Certificate

active

07014397

ABSTRACT:
A self-aligning tapping tool comprises an elongate handle having a longitudinal counterbore through a first end. A tap is received in the counterbore. A collar is operatively secured to the tap. The collar is slightly smaller than the counterbore to enable slidable movement and to prevent rotation of the tap relative to the handle. A retainer is secured to the handled at the first end to retain the collar in the counterbore and has a center opening receiving the tap. A biasing spring in the counterbore biases the tap and the collar outwardly to extend the tap when the handle is turned to thread a hole in a work piece.

REFERENCES:
patent: 475559 (1892-05-01), Heydenreich
patent: 1430932 (1922-10-01), Bogstrand
patent: 1702810 (1929-02-01), Buhr
patent: 1708766 (1929-04-01), Lochner
patent: 2354735 (1944-08-01), Bensinger
patent: 3256541 (1966-06-01), Russo
patent: 3727469 (1973-04-01), Matthey
patent: 4028763 (1977-06-01), Jenner
patent: 4514115 (1985-04-01), Akashi
patent: 2678534 (1993-01-01), None
patent: 53024698 (1978-03-01), None

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