Pumps – Successive stages
Reexamination Certificate
2006-06-20
2006-06-20
Freay, Charles G. (Department: 3746)
Pumps
Successive stages
C417S359000, C417S361000, C417S365000, C417S572000, C384S627000
Reexamination Certificate
active
07063512
ABSTRACT:
A vertically-disposed pump shaft is supported by an upward force against the pump shaft during periods of non use of the pump thereby off-loading bearings normally supportive of the shaft to prevent damage thereto when the pump is moved. Additionally, a lateral support is provided at a lower end of the pump to prevent lateral movement while permitting axial movement, thereby reducing stresses against the pump housing and other components.
REFERENCES:
patent: 4276002 (1981-06-01), Anderson
patent: 4345884 (1982-08-01), Longiny et al.
Haesloop William G.
Ogawa Motoyasu
Cantor & Colburn LLP
Freay Charles G.
Gillan Ryan
Nikkiso Company Ltd.
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