Drills

Details Drills Drills

1989-11-15

1991-04-30

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

279 1K, 279 60, B23B 3106

Patent

active

050113437

ABSTRACT:
The subject of the invention is an attachment to all drilling apparatus which include one or more chucks.
The attachment is made to facilitate and speed up the invention into and removal from drill holding chucks.
The attachment compreses a set of two collars for every chuck. The first one of said collars is attached or forms part of the chuck and the second one is fixedly attached or forms part of the body of the respective apparatus. Within a slot in the second collar is movable a driver which can be brought into engagement with a recess in the face of the first collar. When in engagement, the driver causes the chuck to rotate and to open for insertion or to close for removal of a drill.

REFERENCES:
patent: 4277074 (1981-07-01), Kilberis
patent: 4317578 (1982-03-01), Welch
patent: 4358230 (1982-11-01), Rohlin
patent: 4389146 (1983-06-01), Coder
patent: 4460296 (1984-07-01), Sivertson, Jr.
patent: 4620539 (1986-11-01), Andrews et al.

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