Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Reexamination Certificate
2011-08-30
2011-08-30
Sullivan, Debra (Department: 3725)
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
C072S352000, C072S353200
Reexamination Certificate
active
08006533
ABSTRACT:
A flanged housing member is formed using a forming method and a forming device from a forming material having a pre-flanged forming portion2is disposed at one end of a trunk portion1. The entire external surface of the flanged housing member can be ironed with a sufficient degree of precision without mechanical machining. The forming material is held on one of a first die having an external forming surface and a second die having an internal forming surface. A sizing process is performed to at least form an internal surface of the trunk portion using the first and second dies. The pre-flanged forming portion is sandwiched and pressed between the first die and a flange-forming die to form a flange portion on the end of the trunk portion.
REFERENCES:
patent: 5374219 (1994-12-01), Kohara et al.
patent: 5632682 (1997-05-01), Krude et al.
patent: 4411515 (1995-08-01), None
patent: 19858324 (2000-03-01), None
patent: 57-056124 (1982-04-01), None
patent: 63-273523 (1988-11-01), None
patent: 02-025223 (1990-01-01), None
patent: 03-081043 (1991-04-01), None
Global IP Counselors, LLP
Nissan Motor Co,. Ltd.
Sullivan Debra
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