Static structures (e.g. – buildings) – Imperforate panel with integral reinforcing
Patent
1994-09-28
1996-10-15
Canfield, Robert
Static structures (e.g., buildings)
Imperforate panel with integral reinforcing
428603, B21D 1300, B21D 1310
Patent
active
055642470
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.
REFERENCES:
patent: 3395438 (1968-08-01), Seeff
patent: 4380573 (1983-04-01), Naslund
Kunikata Masaru
Maita Yoshiro
Nakamura Keiichi
Sasaki Shunji
Yoshikawa Takehisa
Canfield Robert
Hitachi , Ltd.
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