Diamond core drill

Details Diamond core drill Diamond core drill

1993-06-18

1995-02-28

Howell, Daniel W.

Cutting by use of rotating axially moving tool

With means to apply transient, fluent medium to work or product

175170, 408 80, 408101, 408204, 408207, B23B 5104, B23B 5106

Patent

active

053931750

ABSTRACT:
A diamond core drill using a sealed core bit is fastened centrally by means of a hollow shaft with a slanted cut at one end, that is used in a wedging manner to secure the tool against the work surface. This eliminates the need for an exterior frame and thus permits the use of large hole saws up to 48", held by a simple and economical tool. The tool feed towards the surface is controled via an advance control nut that screws on the filleted part of the shaft. The tool has a water feed system that entraps the water in a chamber formed by the barrel of the saw and the surface to be cut, that forces the water to seep along the sawing gap thus facilitating lubrification of the core bit. The resulting configuration is such as to allow for a single tool operator.

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patent: 604410 (1898-05-01), Moore
patent: 2287354 (1942-06-01), Misch
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patent: 3186261 (1965-06-01), Howard et al.
patent: 3293952 (1966-12-01), Fairbanks
patent: 3461750 (1969-08-01), Achelis et al.
patent: 3825362 (1974-07-01), Hougen
patent: 3973862 (1976-08-01), Segal
patent: 4620823 (1986-11-01), Hillestad
patent: 4902174 (1990-02-01), Thompson
patent: 4911253 (1990-03-01), Cliche

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