Closing device and closing method

Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work

Reexamination Certificate

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Details

C072S096000, C072S370120, C072S453010

Reexamination Certificate

active

07854156

ABSTRACT:
A closing device100which presses a die2against a rotating pipe body1such that an open end portion of the pipe body1is plastically closed by the die2includes a cored bar3inserted into the pipe body1to close the open end portion of the pipe body1on the opposite side of the die2,and a reactive force applying mechanism43, 60which allows the cored bar3to retreat and applies a reactive force to the retreating cored bar3when the cored bar3receives a predetermined load or more during processing of the pipe body1by the die2.

REFERENCES:
patent: 6672123 (2004-01-01), Sczesny et al.
patent: 197 14 753 A 1 (1998-10-01), None
patent: 102 23 675 C 1 (2003-05-01), None
patent: 1 409 177 (2005-12-01), None
patent: 2003-200241 (2003-07-01), None
patent: 2005-342725 (2005-12-01), None
patent: 2005342725 (2005-12-01), None

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