Metal founding – With product severing or trimming means
Reexamination Certificate
2006-11-30
2010-10-12
Kerns, Kevin P (Department: 1793)
Metal founding
With product severing or trimming means
Reexamination Certificate
active
07810548
ABSTRACT:
A set of dies are composed in order to remove excess metal from a casting with a press. A method of removing the excess metal from the casting includes the steps of: attaching a cutter to one of the stationary die side or the movable die side; setting a work on the other side; and punching excess metal of the work into a recess shape by one punching motion of the movable die with a plurality of blades from the first blade, which is smaller, to the final blade, which is larger and protruded, when the excess metal of the work is removed by a punching motion of the movable die conducted on the stationary die.
REFERENCES:
patent: 2574953 (1951-11-01), Bess et al.
patent: 4175497 (1979-11-01), Lund
patent: 9-19724 (1997-01-01), None
patent: 09-019724 (1997-01-01), None
patent: 11-197820 (1999-07-01), None
patent: 2004-17127 (2004-01-01), None
Jacobson & Holman PLLC
Kerns Kevin P
Mohka Mfg. Co., Ltd.
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