Device

Details Device Device

1987-06-04

1989-01-31

Shoap, Allan N.

Fluid reaction surfaces (i.e., impellers)

Combined or convertible

Hub lubrication or seal

277 32, 277 53, 277 56, 277 68, 277 70, 277133, 415121B, 416174, B63H 114, F16J 15447

Patent

active

048012440

ABSTRACT:
A device in a submersible pump or mixer prevents solid bodies from entering a housing containing a mechanical seal. The device has a helically formed groove so directed, that pollutant material is fed in a direction away from the mechanical seal, and the device has a cutting means to cut the pollutant material.

REFERENCES:
patent: 2281905 (1942-05-01), Young
patent: 2329990 (1943-09-01), Hornschuch
patent: 3147013 (1964-09-01), Tracy
patent: 3273906 (1966-09-01), Pennington
patent: 3371720 (1968-03-01), Blanchard, Jr.
patent: 3558238 (1971-01-01), Van Herpt
patent: 3953146 (1976-04-01), Sowards
patent: 4236872 (1980-12-01), Metcalf

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