Rotary kinetic fluid motors or pumps – Including means for handling working fluid leakage – Leakage through seal between runner or shaft and static part
Patent
1993-10-21
1994-08-09
Cuchlinski, Jr., William A.
Rotary kinetic fluid motors or pumps
Including means for handling working fluid leakage
Leakage through seal between runner or shaft and static part
277 38, 277 58, 277 65, 277 85, 415230, F16J 1532
Patent
active
053360478
ABSTRACT:
A self-sealing water pump seal for a water pump having a rotating shaft that rotates with respect to a fixed housing comprises a conventional primary face seal and a barrier situated between the primary seal and the weep hole in the fixed housing of the water pump. The barrier causes solids dissolved in and/or carried by the vehicle coolant that escape past the primary seal to be deposited in the conduit leading to the weep hole such that a portion of the conduit becomes clogged over time with the solids thereby creating a secondary seal to the primary face seal.
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Cuchlinski Jr. William A.
Cummins Engine Company, Inc.
DePumpo Daniel G.
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