Positive drive adapter

Details Positive drive adapter Positive drive adapter

1990-08-27

1991-04-30

Schwartz, Larry I.

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

279 82, 279 74, B23B 3112

Patent

active

050113445

ABSTRACT:
The invention is a quick change holding device for tools and, more particularly, for taps. The holder has an axially movable collar cooperable with holding elements which can be placed in holding position relative to an annular groove in the tap and released therefrom. The holding elements are curved, that is arcuate individual members having rounded, that is, curved, surfaces on the outsides thereof. The inner rounded or curved surface of the holding element comes into contiguous flush mating engagement with the annular groove in the tap, whereby improved holding capability is achieved.

REFERENCES:
patent: 548037 (1895-10-01), Cox, Jr. et al.
patent: 571461 (1896-12-01), Swanson
patent: 1317019 (1918-04-01), Keller
patent: 2135861 (1938-11-01), Thompson
patent: 3353834 (1967-11-01), Bay
patent: 3735993 (1973-05-01), Seibert
patent: 3985368 (1976-10-01), Better et al.
patent: 4174113 (1979-11-01), Eckman
patent: 4502824 (1985-03-01), Dahse et al.
patent: 4692073 (1987-09-01), Martindell

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