Bearing isolator with air purge

Details Bearing isolator with air purge Bearing isolator with air purge

1997-07-10

2000-05-16

Melius, Terry Lee

Seal for a joint or juncture

Seal between relatively movable parts

Diverse and distinct dynamic seals

277412, 277420, 277431, F16J 1532

Patent

active

060625686

ABSTRACT:
This invention discloses an improved seal utilizing an optional air purge to assist in the elimination or removal of contaminants. The seal is most useful on spindles and utilizes a combination locking ring and diffuser ring to diffuse the air when utilized within the seal member itself. The pressurized air is passed from the diffuser into at least one cavity or chamber which is within the rotor of the seal and which, when the rotor is rotating it provides a centrifuging effect to efficiently and completely remove or eliminate contaminants, including the fluid, and thus preventing the contaminants from reaching the bearings which the seal or bearing isolator is protecting. The bearing isolator or seal element will operate efficiently with or without air pressure, but operates more effectively with requisite air pressure and volume applied to the diffuser and locking element.

REFERENCES:
patent: 3062554 (1962-11-01), McGahan et al.
patent: 3117792 (1964-01-01), Glenn et al.
patent: 3127181 (1964-03-01), Crego et al.
patent: 3168871 (1965-02-01), Sieghartner
patent: 3218085 (1965-11-01), Grace
patent: 3697088 (1972-10-01), Hummer
patent: 4460180 (1984-07-01), Koistinen
patent: 4471964 (1984-09-01), Kotzur
patent: 5028054 (1991-07-01), Peach
patent: 5221095 (1993-06-01), Orlowski
patent: 5658127 (1997-08-01), Bond et al.

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