EP 0506974 A4 19930407 - IMPELLER FOR VORTEX FLOW BLOWER AND METHOD OF MAKING SAID IMPELLER
Title (en)
IMPELLER FOR VORTEX FLOW BLOWER AND METHOD OF MAKING SAID IMPELLER
Publication
Application
Priority
JP 27941190 A 19901019
Abstract (en)
[origin: WO9207191A1] This invention relates to an impeller for a vortex flow blower provided with blades in a three-dimensional shape, formed independently of a blade-casing, and then fixed to said casing, and further relates to a method of making said impeller comprising steps of forming the blade-casing only independently of the other members, forming the blades only independently of the other members, and fixing the blades to the blade casing. This invention can easily accomodate an impeller in an extremely complicated shape and provides a vortex flow blower of high performance at low cost without fail.
IPC 1-7
IPC 8 full level
F04D 23/00 (2006.01); F04D 29/28 (2006.01)
CPC (source: EP)
F04D 23/008 (2013.01); F04D 29/281 (2013.01)
Citation (search report)
- [X] EP 0383238 A2 19900822 - HITACHI LTD [JP]
- [Y] US 3147541 A 19640908 - HATHAWAY CHARLES A
- [Y] GB 732334 A 19550622 - DOYLE VACUUM CLEANER CO
- See references of WO 9207191A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9207191 A1 19920430; EP 0506974 A1 19921007; EP 0506974 A4 19930407; KR 0185156 B1 19990501; KR 927004017 A 19921219
DOCDB simple family (application)
JP 9101408 W 19911016; EP 91917817 A 19911016; KR 920701438 A 19920618