Cutting by use of rotating axially moving tool – Tool or tool with support – Having axial – core-receiving central portion
Patent
1995-08-17
1997-01-28
Bishop, Steven C.
Cutting by use of rotating axially moving tool
Tool or tool with support
Having axial, core-receiving central portion
408703, B23B 5104
Patent
active
055972748
ABSTRACT:
A hole cutter (10) suitable for quickly cutting relatively large holes through wood, fiberboard, drywall and similar nonmetallic construction materials has a tubular member (16) attached to a back plate (14). The back plate includes attaching holes (22, 24) for attachment to a conventional hole saw arbor (12). The tubular member includes a gullet (28) which has a cutting bit (34) mounted adjacent thereto and facing in a direction of rotation. The cutting bit quickly cuts through wood and other materials. Chips generated during cutting are rapidly discharged away from the cutting edge (36) of the cutting bit and may pass through the gullet. Once the hole cutter has cut through, a core, which is cut out using the tool, is rapidly removed from the interior area (40). This is accomplished by using a screw driver or other tool extending through the gullet and prying out the core.
REFERENCES:
patent: 221692 (1879-11-01), Miller
patent: 2179029 (1939-11-01), Barnes
patent: 3387637 (1968-11-01), Ferguson et al.
patent: 3610768 (1971-10-01), Cochran
patent: 5074722 (1991-12-01), Cochran
patent: 5433560 (1995-07-01), Duncan
Bishop Steven C.
Jocke Ralph E.
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