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05/01/08 | 21 views | #20080098788 | Prev - Next | USPTO Class 072 | About this Page  072 rss/xml feed  monitor keywords

Pressing machine, pressing method, and punched article

USPTO Application #: 20080098788
Title: Pressing machine, pressing method, and punched article
Abstract: A press working apparatus is provided with a first working unit and a second working unit 14. In the first working unit, a first stage is performed for forming a half-blanked portion 15 with a projecting shape at a region where a through hole P is to be formed in a sheet W. In the second working unit 14, a second stage S2 is performed in which the half-blanked portion 15 is blanked from the sheet W by a second punch 26 and a second die 23. Also in the second stage S2, when a blanked body is blanked from the sheet W, shaving work is performed with respect to a side wall surface Pa on a region of the sheet W where the blanked body has been blanked.
(end of abstract)
Agent: Sughrue Mion, PLLC - Washington, DC, US
Inventors: Takao Taniguchi, Shigeharu Ikeda, Minoru Hidaka, Takuya Katoh, Mitsuo Ueno
USPTO Applicaton #: 20080098788 - Class: 072336000 (USPTO)
Related Patent Categories: Metal Deforming, With Cutting, By Shearing Tool-couple, With Endless Cutting Edges (e.g., For Punching A Hole), Pre-cutting (i.e., Before Metal-deforming), Blank Detaching

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