| 摘要 |
PCT No. PCT/DE86/00271 Sec. 371 Date Feb. 17, 1987 Sec. 102(e) Date Feb. 17, 1987 PCT Filed Jun. 27, 1986 PCT Pub. No. WO87/00249 PCT Pub. Date Jan. 15, 1987.The water pump impeller comprises a boss with a disk part shaped thereon and a circular or paraboloid transition region is provided between the boss and the disk part. A metal reinforcing disk is embedded round on either side by injection moulding in the disk part, including the transition region. The reinforcing disk has as a component of the boss, a boss part with which it can be mounted on a drive shaft. |
