Pump secondary seal

Details Pump secondary seal Pump secondary seal

2005-10-20

2010-11-02

Kramer, Devon C (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S360000, C277S427000

Reexamination Certificate

active

07824161

ABSTRACT:
A centrifugal pumps secondary seal is disposed between the pump housing cover (130) in the seal chamber and includes a rotatable annular slinger (440) axially disposed on the pump motor shaft for slinging water away from the motor shaft and a flange protector (300) with a drain (400, 430) for diverting and directing free liquid from the seal chamber and outside the motor and pump housing (130, 230), thereby preventing corrosion of the seal chamber components, such as the motor flange (230), drive shaft and other motor components, due to exposure to water.

REFERENCES:
patent: 2375085 (1945-05-01), Curtis
patent: 3071075 (1963-01-01), Spring
patent: 3304875 (1967-02-01), Copeland
patent: 4375291 (1983-03-01), Padgett
patent: 5540449 (1996-07-01), Algers et al.
patent: 5660521 (1997-08-01), Serio
patent: 6287074 (2001-09-01), Chancellor
patent: 6695576 (2004-02-01), Rosso et al.

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