Metal deforming – By application of fluent medium – or energy field – With actuated tool engaging work
Reexamination Certificate
2007-12-21
2010-11-09
Jones, David B (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
With actuated tool engaging work
C072S062000, C072S370060, C072S370220, C029S421100
Reexamination Certificate
active
07827839
ABSTRACT:
According to a bulging device and a bulging method using a profile element pipe, for example, even when a profile steel pipe having a cross sectional shape varying in the axial direction as in a tapered pipe is hydraulically bulged, a bulging in which an internal pressure loading and an axial pressing are combined with each other can be performed to provide a larger expansion ratio than a conventional case and a joining and socket connection thereof to the other part can also be easily performed.
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Kojima Masayasu
Tomizawa Atsushi
Clark & Brody
Jones David B
Mitsubishi Jidoshakogyo Kabushiki Kaisha
Sumitomo Metal Industries Ltd.
Sumitomo Pipe and Tube Co., Ltd.
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