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US 6,676,508 B1Granted
Magnetically controlled flow system
OwnerGerald Grahaminventor
Life of this patent
Estimating the term…
Abstract
A magnetically controlled flow system having a pivotable flap with a permanent magnet at distal ends. Two coils with magnetizable cores are mounted inside the duct and positioned so as to cooperate with the permanent magnet when the flap is in either a closed or an open position. By energizing the coils, the permanent magnet is attracted to the magnetizable cores in either one of the coils, thereby actuating the flap between the closed and open positions.
Claims20
A device for controlling the flow of a fluid through a flow passage defined by a conduit, comprising:
- a flap for mounting in the conduit for movement between a first position and a second position, the flap restricting the flow of the fluid in the conduit more in the second position than in the first position;
- a magnet mounted for movement with the flap;
- a stationary first electromagnet for acting on the magnet to bias the flap towards the first position when energized;
- and
- a stationary second electromagnet for acting on the magnet to bias the flap towards the second position when energized.
2 more elements
A magnetically controlled flow system comprising:
- a conduit for carrying the flow of thermally conditioned fluid to an enclosure;
- blocking means movably disposed in the conduit and selectively operable in an open position allowing flow of fluid, or a closed position blocking the flow of fluid therethrough;
- a magnetically attractive member disposed on the blocking means;
- a first latch means for acting on the magnetically attractive means to cause the blocking means to move to an open position;
- and
- a second latch means for acting on the magnetically attractive means to cause the blocking means to move to a closed position.
3 more elements
Dependencies are inferred from the claim text.