Single-shaft multistage pump

Details Single-shaft multistage pump Single-shaft multistage pump

2007-04-03

2007-04-03

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

With shaft connected fluid force subjected thrust balancing...

C415S198100, C415S229000

Reexamination Certificate

active

10912554

ABSTRACT:
A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device adapted to apply, to the rotary shaft, a balance thrust force opposing an impeller thrust force. A water-lubricated bearing is used as each of the radial bearings, and the rotary shaft is supported by the water-lubricated bearings with a balance member of the balance device interposed therebetween.

REFERENCES:
patent: 3025070 (1962-03-01), Copes
patent: 6981799 (2006-01-01), Sturm et al.
patent: 2005/0281498 (2005-12-01), Hayashi et al.
patent: 10038586 (2002-02-01), None
patent: 0667456 (1995-08-01), None
patent: A-11-270489 (1999-10-01), None
patent: A-2001-248586 (2001-09-01), None
patent: 2002-139045 (2002-05-01), None
patent: A-2002-242881 (2002-08-01), None
K. Gaffal et al., “Innovatives, Umweltfreundliches und Wirtschaftliches Speisepumpenkonzept Erfolgreich Erprobt”, VGB Kraftwerkstechnik, Mar. 1, 1993, pp. 223-230, vol. 73, No. 3, VGB Kraftwerkstechnik GmbH, Essen, DE, XP000355089, ISSN: 0372-5715.
European Search Report dated Jan. 26, 2006.

Affiliated with

Also associated with

Rating

Single-shaft multistage pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single-shaft multistage pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-shaft multistage pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3766588