Method for break separation of pieces that can be...

Details Method for break separation of pieces that can be... Method for break separation of pieces that can be...

2005-04-22

2010-10-19

Bryant, David P (Department: 3726)

Metal working

Method of mechanical manufacture

Obtaining plural product pieces from unitary workpiece

C029S888090, C225S103000

Reexamination Certificate

active

07814632

ABSTRACT:
A method for break separation of pieces that can be re-assembled or their starting materials achieves a break separation at a selected break surface. The method includes subjecting a piece to be subjected to break separation to a break force F3, F3′ perpendicular to the selected break surface. Also, the method includes applying, before the time at which the piece is subjected to the break force F3, F3′, a compressive force F1-F6′ to the piece in a manner such that a tensile stress is produced whose maximum occurs perpendicular to the plane of the break surface, the level of stress produced is below the elastic limit of the material of the piece, and the compressive force F1-F6′ continues at least until the piece is first subjected to the break force F3, F3′.

REFERENCES:
patent: 1209250 (1916-12-01), Bellanger
patent: 1366063 (1921-01-01), Culhane, Jr.
patent: 2630174 (1953-03-01), Poteet
patent: 3845895 (1974-11-01), Nakahara
patent: 4970783 (1990-11-01), Olaniran et al.
patent: 6176115 (2001-01-01), Van Ryper et al.
patent: 10137975 (2003-02-01), None
patent: 0396797 (1990-11-01), None

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