Stock material or miscellaneous articles – All metal or with adjacent metals – Laterally noncoextensive components
Reexamination Certificate
2006-01-10
2006-01-10
Zimmerman, John J. (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Laterally noncoextensive components
C428S673000, C428S674000, C428S539500, C428S469000, C428S472000, C428S212000, C501S087000, C501S093000, C501S096300
Reexamination Certificate
active
06984454
ABSTRACT:
A tough wear-resistant hard member that includes a hard composite member and a support that has a surface area adjacent to the hard composite member wherein the hard composite member is affixed to the support over at least a portion of the adjacent surface area of the support. The hard composite member includes a plurality of discrete hard constituents distributed in the hard composite member wherein each one of the discrete hard constituents is of a size so as to have a surface area between about 0.001 square inches and about 16 square inches. The hard composite member further contains a matrix powder that includes particles wherein substantially all of the hard particles have a size smaller than the size of the hard constituents. The hard composite member further includes an infiltrant alloy having a melting point between about 500 degrees Centigrade and about 1400 degrees Centigrade wherein the infiltrant alloy is infiltrated under heat into a mixture of the discrete hard constituents and the matrix powder so as to not effectively degrade the hard constituents upon infiltration, whereby the hard constituents and the matrix powder and the infiltrant alloy are bonded together to form the hard composite member. The support is made of a material that is bondable with the infiltrant alloy whereby the infiltrant alloy forms a joint at the joinder of the support and the hard composite member.
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The Brazing Book, Handy & Harman, 850 Third Avenue, New York, NY 10022 (Copyright 1983).
TRICON for Superior Brazing Materials, Tricon Brazing Alloys, Inc., 2325 Wisconsin Avenue, Downers Grove, IL 60515, no date on publication.
Kennametal Inc.
Savage Jason
Smith Matthew W.
Zimmerman John J.
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