Cutting by use of rotating axially moving tool – Tool or tool with support – Having axial – core-receiving central portion
Patent
1992-10-05
1993-04-27
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Tool or tool with support
Having axial, core-receiving central portion
408144, 408207, B23B 5105
Patent
active
052056856
ABSTRACT:
A hole saw, especially suited for sheet-metal work, incorporates an annular ring surrounding the body of the saw, and located at an end adjacent its cutting edge. In accordance with the invention, the diameter of the ring is selected larger than that of the cutting teeth, to operate as a "stop" in preventing the saw from undesirably extending into the cavity where the saw makes its cut, beyond a predetermined amount. As will be described, the annular ring allows for a constant, equal pressure to be applied in using the hole saw across a work-piece while, at the same time, limiting any accidental damage to be done inside the work-piece if the hole saw were to penetrate too far.
REFERENCES:
patent: 1522102 (1925-01-01), Cibelli
patent: 4297059 (1981-10-01), Miyanaga
patent: 5082403 (1992-01-01), Sutton et al.
patent: 5147164 (1992-09-01), Fraver
Brodsky Charles I.
Howell Daniel W.
LandOfFree
Hole saw does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hole saw, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hole saw will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2322602