Gear pump

Details Gear pump Gear pump

2006-03-21

2006-03-21

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Moving cylinder

Rotating

C418S180000, C418S206500

Reexamination Certificate

active

07014436

ABSTRACT:
A pump comprises a driving rotor and a driven rotor that are positioned in a housing such that, as the driving rotor and the driven rotor rotate, the teeth of the driving rotor and the teeth of the driven rotor mesh to form a positive displacement seal. The teeth of the driving rotor and the driven rotor are configured such that seals between the inlet side and the discharge side of the pump are formed between only the leading surfaces of the teeth of the driving rotor and the trailing surfaces of the teeth of the driven rotor.

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patent: 5114325 (1992-05-01), Morita
patent: 5145349 (1992-09-01), McBurnett
patent: 6206666 (2001-03-01), Steinrock et al.
patent: 6312241 (2001-11-01), Kamamoto et al.
patent: 60-150492 (1985-08-01), None
patent: 2-286889 (1990-11-01), None
patent: 6-272672 (1994-09-01), None
patent: 6-272673 (1994-09-01), None

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