| 摘要 |
<p>725,162. Flexible pipes. KREBBER, E., and KREBBER, H. J., [trading as KREBBER, J. &. O.]. Feb. 9, 1953, No. 3576/53. Class 99 (2). [Also in Groups XI and XXIX] In apparatus for spraying fusible materials (see Group XXIX) the material, in molten condition, is conveyed to a spraying device through a flexible pipe comprising flexible, corrugated, tubular metal core 32 surrounded by glass wool 33, or other heat and electrically insulating material, contained within a metal covering 34 preferably comprising a copper or steel braiding. The latter may be covered by rubber hose.</p> |
