Hole producing assembly

Details Hole producing assembly Hole producing assembly

1995-05-11

1997-04-29

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having axial, core-receiving central portion

144 23, 408124, 408204, 408703, B23B 5104

Patent

active

056242131

ABSTRACT:
A hole producing assembly for a power drill including an adapter having one end operationally connected to the power drill such that the power drill rotates the adapter about an axis of rotation, the other end of the adapter includes a threaded shaft having threads that are of the four-start type, a cutter which has threads thereon that are complementary to the four-start threads on the adapter so that the cutter is threadably connectable to the adapter, the cutter has a cutting projection extending from the base and terminating in a cutting edge, and a spacer positioned between on the shaft of the adapter to aid in removal of the cutter from the adapter after use. The hole producing assembly can also be used in a nested cutter mode wherein a second cutter is threaded onto the shaft of the adapter, or with a speed reducer such that the cutter or nested cutters rotate at a speed slower than the rotational speed produced by the drill motor, or can be used with an arbor extension to drill holes in hard to reach materials.

REFERENCES:
patent: 2721592 (1955-10-01), Baker
patent: 2752965 (1956-07-01), Mackay
patent: 3778179 (1973-12-01), Rivas
patent: 3999869 (1976-12-01), Clark et al.
patent: 4968189 (1990-11-01), Pidgeon

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