Protective shroud for the shaft of a helical gear pump

Details Protective shroud for the shaft of a helical gear pump Protective shroud for the shaft of a helical gear pump

1991-05-31

1992-09-08

Bertsch, Richard A.

Rotary expansible chamber devices

Unlike helical surfaces on relatively wobbling rotating...

418104, 418181, F04C 1822

Patent

active

051453410

ABSTRACT:
A helical gear pump in which a tubular shroud surrounds the drive shaft, the shroud being mounted in a housing of the pump at the end of the shroud remote from the stator and rotor, a seal being provided between the rotor and the tubular shroud.

REFERENCES:
patent: 3324801 (1967-06-01), Fernholtz
patent: 3340814 (1967-09-01), Streicher
patent: 3539279 (1970-11-01), Rider et al.
patent: 4153397 (1979-05-01), Allen
patent: 4639200 (1987-01-01), Baumgardner et al.
patent: 4764094 (1988-08-01), Baldenko et al.

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