Water pump seal and method

Details Water pump seal and method Water pump seal and method

1977-11-23

1979-05-22

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 24, 277134, 277208, F16J 1532

Patent

active

041555600

ABSTRACT:
An annular shaft seal and method for sealing the shaft of a water pump used with coolants containing anti-corrosion compounds that can precipitate out as particles that can cause wear of shaft and seal. The shaft seal of this invention has a primary sealing element and a unique auxiliary sealing element. The unique auxiliary sealing element has a large lip contact width and is located axially inwardly of the primary sealing element for causing the anti-corrosion compounds to precipitate out at a location axially inwardly from the primary sealing element and over a larger than normal area thus reducing shaft wear due to lower unit loading. The seal also includes means for preventing the precipitated-out particles from reaching the shaft-contacting lip of the primary sealing element.

REFERENCES:
patent: 2804324 (1957-08-01), Stallings
patent: 2833577 (1958-05-01), Reynolds
patent: 2994571 (1961-08-01), Peros
patent: 3203511 (1965-08-01), Long
patent: 3306223 (1967-02-01), Liebig
patent: 3482845 (1969-12-01), Bertrandi et al.
patent: 3534969 (1970-10-01), Weinand
patent: 3563556 (1971-02-01), Scott
patent: 3612547 (1971-10-01), Kan
patent: 3621952 (1971-11-01), Long
patent: 3785660 (1974-01-01), Bush

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