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Machine translation
1. (WO1992011459) FLOATING SELF-CENTERING TURBINE IMPELLER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1992/011459    International Application No.:    PCT/US1991/009635
Publication Date: 09.07.1992 International Filing Date: 19.12.1991
Chapter 2 Demand Filed:    17.07.1992    
IPC:
F04D 5/00 (2006.01), F04D 23/00 (2006.01), F04D 29/04 (2006.01), F04D 29/18 (2006.01), F04D 29/20 (2006.01), F04D 29/26 (2006.01), F16C 33/10 (2006.01)
Applicants: ROY E. ROTH COMPANY [US/US]; Box 4330, Rock Island, IL 61204 (US)
Inventors: SIEGHARTNER, Leonard, J.; (US)
Agent: BROWN, Paul, L.; Emrich & Dithmar, 150 North Wacker Drive, Suite 3000, Chicago, IL 60606 (US)
Priority Data:
632,166 21.12.1990 US
Title (EN) FLOATING SELF-CENTERING TURBINE IMPELLER
(FR) ROTOR DE TURBINE FLOTTANT A CENTRAGE AUTOMATIQUE
Abstract: front page image
(EN)A floating, self-centering impeller (12) for a turbine pump assembly (10) has a plurality of 'D-shaped' recesses (49) arranged in one or more annular rows on its side surfaces (44, 44a) to induce pressurized film between its side surfaces and adjacent thrust surfaces (54, 54a) of liners (16, 18) to prevent galling or seizing of the pump as the impeller is rotated. A corresponding array of such 'D-shaped' recesses may be provided on the opposing surfaces of the liners.
(FR)Rotor flottant, à centrage automatique (12) pour ensemble de pompe à turbine (10), possédant une pluralité de creux en forme de 'D' (49) disposés sur une ou plusieurs rangées annulaires sur ses surfaces latérales (44, 44a) pour induire une pellicule sous pression entre ses surfaces latérales et les surfaces de poussée contiguës (54, 54a) de parties intermédiaires (16, 18) pour empêcher le grippage de la pompe pendant la rotation du rotor. Une disposition correspondante de tels creux en forme de 'D' peut se situer sur les surfaces opposées des parties intermédiaires.
Designated States: CA, JP, KP.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE).
Publication Language: English (EN)
Filing Language: English (EN)