The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 05, 2016

Filed:

Jun. 29, 2011
Applicant:

Shinji Ishii, Togo-cho, JP;

Inventor:

Shinji Ishii, Togo-cho, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 37/16 (2006.01); B21D 22/20 (2006.01); B21D 22/28 (2006.01); B21D 22/02 (2006.01);
U.S. Cl.
CPC ...
B21D 22/20 (2013.01); B21D 22/022 (2013.01); B21D 22/208 (2013.01); B21D 22/286 (2013.01); B21D 37/16 (2013.01);
Abstract

Disclosed is a hot-pressing apparatus capable of quenching a workpiece at a sufficient cooling rate. A hot-pressing apparatus includes a lower die and an upper die. The hot-pressing apparatus causes the dies to press a workpiece, and at the same time, to keep the forming surfaces thereof in contact with the workpiece to cool the workpiece. Depression parts are formed in parts of the lower die which faces external corners of the upper die, and parts of the upper die which faces external corners of the lower die. The water-feed channel and the lower water-feed device, and the water-feed channel and the upper water-feed device are provided to feed cooling water to spaces between the workpiece and the dies.


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