Hall switch pump

Details Hall switch pump Hall switch pump

F - Mech Eng,Light,Heat,Weapons

04

B

342/37

F04B 17/04 (2006.01) F04B 49/06 (2006.01) H02K 33/10 (2006.01)

Patent

CA 1175534

Abstract An electromagnetic fluid pump having a magnet attached to a reciprocating piston and a Hall effect switch detecting the magnetic field generated by the moving magnet. In a first position of the magnet, the magnetic field through the hall effect switch is in a first direction causing the hall effect switch to generate a signal having a first polarity. In a second position of the magnet the magnetic field through the hall effect switch is reversed, reversing the polarity of the signal generated by the hall effect switch. An electronic switch circuit responsive to the signal generated by the hall effect having the first polarity to energize the solenoid coil to retract the piston from the first position to the second position against the force of a spring and further responsive to the signal having a reversed polarity to deenergize the solenoid coil when the piston is in said second position.

377847

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