Cutting by use of rotating axially moving tool – Tool-support with means to permit positioning of the tool... – Tool having stepped cutting edges
Reexamination Certificate
2009-01-05
2011-11-08
Howell, Daniel (Department: 3726)
Cutting by use of rotating axially moving tool
Tool-support with means to permit positioning of the tool...
Tool having stepped cutting edges
C408S202000, C408S225000
Reexamination Certificate
active
08052359
ABSTRACT:
A countersink assembly including a countersink sleeve body with a distal cutting edge, a longitudinal bore to receive and secured to a drill bit, and a flute extending from the distal cutting edge. A depth stop collar having a longitudinal bore is disposed on and secured to the countersink sleeve body. In an example embodiment, the longitudinal bore of the depth stop collar includes at least one passage for chip egress. In addition or in the alternative, the flute includes a flat surface and a part cylindrical surface extending from the distal cutting edge along the length of the flute at an angle to the longitudinal bore of the countersink sleeve body so as to present a slight down-cut spiral.
REFERENCES:
patent: 332308 (1885-12-01), Valentine
patent: 1105154 (1914-07-01), McMillen
patent: 2344143 (1944-03-01), Harding
patent: 2390744 (1945-12-01), Smith
patent: 2429375 (1947-10-01), Smith
patent: 2794353 (1957-06-01), Bashlow et al.
patent: 3552503 (1971-01-01), Lebar
patent: 4039266 (1977-08-01), O'Connell
patent: 5182973 (1993-02-01), Martindell
patent: 5795110 (1998-08-01), Wirth, Jr. et al.
patent: 5882151 (1999-03-01), Wirth, Jr. et al.
patent: 6273652 (2001-08-01), Wirth, Jr. et al.
patent: 6471450 (2002-10-01), Mercier
patent: 6585459 (2003-07-01), Wirth, Jr. et al.
patent: 7147409 (2006-12-01), Wienhold
patent: 7258513 (2007-08-01), Gertner
patent: 7513722 (2009-04-01), Greenberg et al.
patent: 7607871 (2009-10-01), Nelson
patent: 2008/0056836 (2008-03-01), Shiao
patent: 06246525 (1994-09-01), None
patent: 2000198010 (2000-07-01), None
patent: 2005193352 (2005-07-01), None
patent: 2005288629 (2005-10-01), None
Brutsman Paul
McCool Mark K.
Sanger Jay L.
Wirth, Jr. John
Howell Daniel
Nixon & Vanderhye PC
Woodworker's Supply Inc.
LandOfFree
Countersink assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Countersink assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Countersink assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4301421