| 摘要 |
<p>1,254,247. Making burners. JUNKERS & CO. G.m.b.H. 31 March, 1970 [28 March, 1969], No. 15110/70. Heading B3A. [Also in Divisions F3-F4] A burner tube is fashioned from a flat highgrade steel plate 10 bent to form a trough and mounted on a base. Burner outlets 12 are formed by punching out holes from the plate 10 before bending, each hole having a rectangular cross-section and four preferably rectangular upstanding flanges 13, the sides of adjacent flanges being spaced by gaps 14.</p> |
