| 摘要 |
PCT No. PCT/DE86/00147 Sec. 371 Date Dec. 8, 1986 Sec. 102(e) Date Dec. 8, 1986 PCT Filed Apr. 3, 1986 PCT Pub. No. WO86/05855 PCT Pub. Date Oct. 9, 1986.A flanged joint for connecting sheet material air channel sections of essentially rectangular cross section to one another has flanges made of hollow sheet material shapes and steel angle pieces. Each of the hollow sheet material shapes is provided with projections and/or depressions in one or more of the walls which entirely or partially surround a leg of a respective steel angle piece. Each leg of a steel angle piece, in turn, is provided with projections and/or depressions which are disposed at the periphery of the leg and are adjusted to the positions of the projections and/or depressions in the hollow sheet material shapes. At least one of the projections then catches in at least one of the depressions upon pushing a leg of a steel angle piece into a hollow sheet material shape. |
