公开(公告)号：DE19906645A1

公开(公告)日：2000-08-24

申请号：DE19906645

申请日：1999-02-18

Applicant: ABB RESEARCH LTD

Inventor： MALLICK VISHAL ,  WALSER HANSPETER ,  BUECHI FRANZ ,  MEIER GUIDO ,  LEHMANN DIETER ,  VOGT ERNST

IPC: B29C65/56 ,  B29C65/60 ,  F04D29/02 ,  F04D29/28 ,  B29C65/02

Abstract: The impeller has a circular cover disc(2) with openings(10) for holding connecting lugs(6) which connect the cover disc and impeller blades(5). An Independent claim is made for a process for manufacturing the impeller in which connectors(6) projecting from the blades(5) are inserted into the openings(10) in the cover disc(2) and a head formed with a heated riveting tool.