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.
Patent No.:
Date of Patent:
Jun. 19, 2012
Filed:
Mar. 10, 2009
Toshihiro Kanematsu, Atsugi, JP;
Shin-ya Seno, Atsugi, JP;
Toshihiro Kanematsu, Atsugi, JP;
Shin-ya Seno, Atsugi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
There is provided a method of manufacturing a hollow structural member suitable for precisely manufacturing a hollow structural member whose pitch space of the hollows is below 30 μm. The method of manufacturing a hollow structural member of this invention is to encapsulate, by using a gas-permeable material in part of a material that constitutes the substrate () for manufacturing the hollow structural member, a high-pressure gas by injection in advance, under high-pressure conditions, into the gas-permeable material; to form a plastic deformation film () on a surface under reduced-pressure conditions; and to expand and draw the plastic deformation film (), while preventing the plastic deformation material from entering the recesses (), by discharging the high-pressure gas that is encapsulated in the gas-permeable material into each of the recesses (), whereby the hollow structural member is manufactured.