Method and apparatus for fluid flow control

Details Method and apparatus for fluid flow control Method and apparatus for fluid flow control

2005-05-10

2005-05-10

Hepperle, Stephen M. (Department: 3753)

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

C137S486000, C137S499000, C137S487500

Reexamination Certificate

active

06889700

ABSTRACT:
Methods and apparatus are provided for modulating a flow of fluid in a duct using a rotating member that rotates in the duct. A sensing unit senses the rotation speed of the rotating member and generates a rotation signal as a function of the sensed rotation speed. A control unit receives the rotation signal from the sensing unit and generates a control signal to modify the rotation speed of the rotating member. The apparatus can be self-powering by generating an electric current in response to rotation of the blade.

REFERENCES:
patent: 3279496 (1966-10-01), Klass et al.
patent: 3370831 (1968-02-01), Lazar
patent: 4333486 (1982-06-01), Ciccozzi
patent: 5152309 (1992-10-01), Twerdochlib et al.
patent: 5287884 (1994-02-01), Cohen
patent: 5409034 (1995-04-01), Ostertag et al.

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