Cutting – Tool or tool with support – Joint or connection
Patent
1996-08-23
1998-05-05
Rachuba, Maurina T.
Cutting
Tool or tool with support
Joint or connection
8369891, 83684, B26D 726
Patent
active
057461040
ABSTRACT:
A two-piece punch for use in a punch press to form holes in a workpiece. The punch includes a shank portion to be retained in a punch press, a two-piece cutter element consisting of a socket member attached to the shank portion, the socket member having a socket bore with an open end, and a cutter insert for insertion in the open end of the socket bore to be seated therein, the cutter insert having a cutting end projecting outwardly from the socket member when the cutter is seated in the socket bore, and a cutting edge on the cutting end. The punch also has a retainer for retaining the cutter insert in the socket bore. The cutter insert is preferably formed of a substantially cylindrical annular member, and the cutting edge is an outer bevel formed on the outer circumference of the cutter insert at its cutting end. An inwardly extending annular shoulder at the cutting end forms a reinforced throat for the cutting edge. The socket bore preferably has a shank end which comprises an annular mounting surface having an opening of reduced diameter relative to the socket bore.
REFERENCES:
patent: 2087186 (1937-07-01), Freeman, Jr.
patent: 2379367 (1945-06-01), Marchant
patent: 2598975 (1952-06-01), Coulter
patent: 3063319 (1962-11-01), Johnson
patent: 3641860 (1972-02-01), Whistler, Sr. et al.
patent: 4096776 (1978-06-01), Laucke
patent: 4257292 (1981-03-01), Faull
patent: 4273015 (1981-06-01), Johnson
patent: 4526077 (1985-07-01), DeGuvera
patent: 4621556 (1986-11-01), Soltysiak et al.
patent: 5005458 (1991-04-01), Merrick
patent: 5044244 (1991-09-01), Olson
patent: 5133237 (1992-07-01), Daffe
Morris, Jr. William N.
Russell Howard L.
Rachuba Maurina T.
Wilmington Rubber & Gasket Co., Inc.
LandOfFree
Two-piece hole punch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-piece hole punch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-piece hole punch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-45303