| (19) |
 |
|
(11) |
EP 0 286 809 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
02.11.1988 Bulletin 1988/44 |
| (43) |
Date of publication A2: |
|
19.10.1988 Bulletin 1988/42 |
| (22) |
Date of filing: 24.02.1988 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB IT |
| (30) |
Priority: |
10.04.1987 US 36627
|
| (71) |
Applicant: ROCKWELL INTERNATIONAL CORPORATION |
|
() |
|
| (72) |
Inventors: |
|
- Dunn, Charlton (NMN)
()
- Subbaraman, Maria Romaniuk
()
|
|
| |
|
| (54) |
Cavitation-resistant inducer |
(57) An improvement in an inducer (18) for a pump wherein the inducer includes a hub,
a plurality of radially extending substantially helical blades (22) and a wall member
(24) extending about and encompassing an outer periphery of the blades (22). The improvement
comprises forming adjacent pairs of blades (22) and the hub to provide a substantially
rectangular cross-sectional flow area which cross-sectional flow area decreases from
the inlet end of the inducer (18) to a discharge end of the inducer (18).