Cutting – Processes – Plural cutting steps
Reexamination Certificate
2006-03-28
2011-10-25
Alie, Ghassem (Department: 3724)
Cutting
Processes
Plural cutting steps
C083S695000, C083S678000
Reexamination Certificate
active
08042440
ABSTRACT:
A punching die for punching out a seal member from a sheet of an inorganic fiber mat having a contour. The punching die includes a base plate. A first blade is supported on the base plate and has a cutting edge extending to form a loop. The first blade punches out a frame-shaped unnecessary portion, which includes the contour, and a seal member formation portion, which includes the seal member, from the inorganic fiber mat. A second blade, which is supported on the base plate at an outer side of the first blade, partially cuts the frame-shaped unnecessary portion. The at least one second blade forms a perforation in the frame-shaped unnecessary portion to separate the unnecessary portion into a plurality of unnecessary fragments. This improves productivity for production of the seal members.
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Japanese Office Action for corresponding JP Application No. 2005-209137, Feb. 1, 2011.
Alie Ghassem
Ditthavong Mori & Steiner, P.C.
IBIDEN Co., Ltd.
Patel Bharat C
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