| 摘要 |
PCT No. PCT/DE85/00115 Sec. 371 Date Dec. 4, 1985 Sec. 102(e) Date Dec. 4, 1985 PCT Filed Apr. 10, 1985 PCT Pub. No. WO85/04604 PCT Pub. Date Oct. 24, 1985.Injection moulding core for pipe bends, with at least one straight pipe terminal portion, wherein the bend core is divided in various segments (a) which are preferably wedge-shaped when viewed sideways and which are connected by appropriate elements preferably mushroom-shaped projections (c) to form a chain so that the medial line (b) of the chain of segments may form a straight line, and which are mutually fixed by appropriate elements, preferably centering pins (d) or adjusting springs and/or an edge overlapping the various segments (a), in order to avoid any displacement and torsion, and which comprise one or a plurality of holes (e) through which pass one or a plurality of traction elements, preferably metal cables (f) which are connected to the last segment (a) of the chain, whereas they are connected to displacement elements (i) at the other end of the chain by means of a core (h) fixed preferably to that end of the chain and provided for the straight pipe terminal portion.
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