Cutting by use of rotating axially moving tool – Tool or tool with support – Having axial – core-receiving central portion
Patent
1997-12-03
1998-09-01
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Tool or tool with support
Having axial, core-receiving central portion
408118, 408119, 408206, 30359, B23B 4102
Patent
active
058001484
ABSTRACT:
A rotary tool for forming a blind-tapered hole in a workpiece includes an elongate shaft having a bit shank on one end and a base plate secured to the other end. A collar, mounted for axial movement on the shaft, is biased away from the base plate to a first position on the shaft by a return spring. At least two cutting blades are pivotally attached to the collar. A portion of the length of each cutting blade is fixedly circumferentially and radially supported relative to the shaft by a blade guide that rotates with the shaft such that the angle formed between each cutting blade and the shaft's rotational axis increases with increasing axial displacement of the collar on the shaft away from the first position.
REFERENCES:
patent: 39288 (1863-07-01), Harris
patent: 505322 (1893-09-01), Moss
patent: 529049 (1894-11-01), Rich et al.
patent: 581677 (1897-04-01), Lee
patent: 752724 (1904-02-01), Taylor
patent: 762458 (1904-06-01), Willard
patent: 1091502 (1914-03-01), Gearing
patent: 1330385 (1920-02-01), Muden
patent: 2325020 (1943-07-01), Shaw
patent: 2480595 (1949-08-01), Moyer et al.
patent: 2594671 (1952-04-01), McTyre et al.
patent: 3358722 (1967-12-01), Berry
patent: 4207636 (1980-06-01), Lacey
patent: 4411324 (1983-10-01), Liebig
patent: 4487275 (1984-12-01), Froehlich
patent: 4992010 (1991-02-01), Fischer
Bhargava Adesh
Howell Daniel W.
LandOfFree
Blind-taper 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 Blind-taper hole saw, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blind-taper hole saw will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-262746