Cutting by use of rotating axially moving tool – Tool or tool with support – Having axial – core-receiving central portion
Reexamination Certificate
2004-03-26
2010-12-14
Howell, Daniel W (Department: 3726)
Cutting by use of rotating axially moving tool
Tool or tool with support
Having axial, core-receiving central portion
C279S008000, C408S23900A
Reexamination Certificate
active
07850405
ABSTRACT:
The present invention relates to an improved hole saw boss (10) and in particular, to a boss including a threaded member (12) adapted to accommodate two hole saws of the same or different bore thread diameters. The present invention allows for a pre-existing aperture (22) in a work piece to be simply enlarged. This is useful if a new lock mechanism is being installed in a door with a pre-existing aperture where the lock mechanism requires a larger aperture than that which was in existence. Currently the aperture has to be enlarged by manual handwork since there is no centre-point to which a pilot drill may be enlarged. The threaded bore diameters of the present invention correspond with the commonly available hole saw threaded bore diameters. The present invention therefore provides the public with device for enlarging apertures which is simply, cost effective and can be used with currently available hole saws.
REFERENCES:
patent: 347942 (1886-08-01), Leary
patent: 2564451 (1951-08-01), Sandberg et al.
patent: 2599770 (1952-06-01), Marcerou
patent: 2917975 (1959-12-01), Webster
patent: 3139800 (1964-07-01), Clarkson et al.
patent: 3339458 (1967-09-01), Williams
patent: 3647310 (1972-03-01), Morse
patent: 3784316 (1974-01-01), Bittern
patent: 3973862 (1976-08-01), Segal
patent: 4303357 (1981-12-01), Makar
patent: 4325664 (1982-04-01), Mori
patent: 4551045 (1985-11-01), Bossler
patent: 4946189 (1990-08-01), Manning
patent: 4968189 (1990-11-01), Pidgeon
patent: 5035550 (1991-07-01), Ajimi
patent: 5108235 (1992-04-01), Czyzewski
patent: 5226762 (1993-07-01), Ecker
patent: 5352071 (1994-10-01), Cochran et al.
patent: 5413437 (1995-05-01), Bristow
patent: 5624213 (1997-04-01), Anderson
patent: 5658102 (1997-08-01), Gale
patent: 5868532 (1999-02-01), Spenser
patent: 5967709 (1999-10-01), Thuesen
patent: 6065909 (2000-05-01), Cook
patent: 6120221 (2000-09-01), Alm
patent: 6357973 (2002-03-01), Chao
patent: 6409436 (2002-06-01), Despres
patent: 6641338 (2003-11-01), Despres
patent: 6676343 (2004-01-01), Burk
patent: 7101124 (2006-09-01), Keightley
patent: 7104738 (2006-09-01), Cantlon
patent: 2004/0086347 (2004-05-01), Steer
patent: 2007/0166116 (2007-07-01), Olson et al.
patent: 2008/0118315 (2008-05-01), Brunson
patent: 3532157 (1987-03-01), None
patent: 2587245 (1987-03-01), None
patent: 10071517 (1998-03-01), None
Bio Intellectual Property Services LLC
Howell Daniel W
Zaghmout O. M. (Sam)
LandOfFree
Hole saw boss 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 boss, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hole saw boss will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4237311