Variable flow water pump

Details Variable flow water pump Variable flow water pump

2005-08-30

2005-08-30

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing having tangential inlet or outlet

C416S22300B, C417S423800

Reexamination Certificate

active

06935839

ABSTRACT:
A variable-capacity water pump includes a housing having an impeller mounted on a rotatable shaft. The impeller includes a plurality of vanes pivotally coupled between upper and lower shroud and operatively coupled to a pitch plate. As the pump speed increases in response to increasing engine speed, the pitch plate controls the rotation of the impeller vanes about a fixed rivet from a maximum pitch position, toward a minimum pitch position, thereby lowering pump output according to engine cooling requirements.

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patent: 5730580 (1998-03-01), Japikse
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patent: 6309193 (2001-10-01), Repple et al.
patent: 467868 (1946-09-01), None
patent: 1512443 (1966-12-01), None
patent: 2175393 (1973-09-01), None

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