Weep hole plug for a fluid circulating pump

Details Weep hole plug for a fluid circulating pump Weep hole plug for a fluid circulating pump

1995-03-21

1996-02-13

Kwon, John T.

Rotary kinetic fluid motors or pumps

Including means for handling working fluid leakage

F04D 2908

Patent

active

054907624

ABSTRACT:
The present invention provides a fluid circulating pump utilizing a plug assembly sealingly disposed within a weep hole located in a secondary compartment of a cavity. The plug assembly is disposed within the weep hole and has a tube portion extending a predetermined length into the secondary compartment. A connector holds the plug assembly within the second compartment and sealingly engages the plug assembly with the weep hole. The length of the tube portion is sufficient to contain the leaked fluid within the secondary compartment until it can be evaporated, substantially eliminating fluid leakage into the atmosphere. However, excessive fluid build-up may occur within the secondary compartment when the pump is damaged. The present invention allows the excessive fluid to leak out to the atmosphere through a bore in the plug assembly to signal that pump repair is needed.

REFERENCES:
patent: 4621975 (1986-11-01), Larson
patent: 4973222 (1990-11-01), Osaki et al.
patent: 5154576 (1992-10-01), Dorski et al.
patent: 5226786 (1993-07-01), Dorski et al.
patent: 5338153 (1994-08-01), Swanson et al.

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