Title:
METHOD OF PRODUCING FORM AND FORM PRODUCED BY THE SAME
Document Type and Number:
Japanese Patent JP2005290798
Kind Code:
A
Abstract:
To reduce a useless part of a steel plate material and produce a form at a low cost.
A plurality of swollen parts 2d where at least height H out of height H and width W gradually increases are formed from an edge 2b at one side to an edge 2c at the other side in the direction orthogonal to the longitudinal direction of hoop steel 2. After a plurality of the swollen parts 2d are formed in the hoop steel 2, the hoop steel 2 is rounded in a cylindrical shape to form a cylindrical body 20 with end parts joined.
Inventors:
KABE KEIICHI
ENDO TOSHIMASA
ERA YOSHIYUKI
ENDO TOSHIMASA
ERA YOSHIYUKI
Application Number:
JP2004106374A
Publication Date:
October 20, 2005
Filing Date:
March 31, 2004
Export Citation:
Assignee:
OKABE CO LTD
International Classes:
E02D5/34; B21D19/00; B21D51/10; B28B7/00; E02D27/01; E02D27/12; (IPC1-7): E02D27/01; B21D19/00; B21D51/10; B28B7/00; E02D5/34; E02D27/12
Domestic Patent References:
| JP2002147017A | 2002-05-22 | |||
| JP3019365U | 1995-12-12 | |||
| JPS549403B2 | 1979-04-24 | |||
| JPH0320354Y2 | 1991-05-01 | |||
| JPH0960165A | 1997-03-04 | |||
| JPH11210136A | 1999-08-03 |
Attorney, Agent or Firm:
Toshio Tsuruwaka
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