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:
Oct. 15, 1996
Filed:
Sep. 28, 1994
Keiichi Nakamura, Tokyo, JP;
Masaru Kunikata, Shimizu, JP;
Takehisa Yoshikawa, Yokohama, JP;
Yoshiro Maita, Shimizu, JP;
Shunji Sasaki, Shimizu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a high-rigidity structure made of sheet metal, in order to prevent increases of vibrations and noises owing to deterioration of the rigidity caused by decreasing the thickness of the sheet-metal, ribs having a height 10 times or more larger than the sheet-metal thickness are formed on bent portions of the sheet-metal structure, corrugated continuous grooves having two or more crest portions are formed on a surface of each of the bent portions on a smaller-radius side, and concave/convex sections corresponding to the continuous grooves are formed on side surfaces of each of the ribs which connect a larger-radius side and the smaller-radius side.