Inventors:
Ross KUNZ - Fergus Falls MN, US
Robert Kunz - Fergus Falls MN, US
Dominic Kunz - Fergus Falls MN, US
Assignee:
Metso Automation USA Inc. - Norcross GA
International Classification:
F16K 31/02
H01F 7/08
US Classification:
2511292, 335253, 25112909, 137 13
Abstract:
A solenoid actuator includes an electrical circuit with a first power input terminal, a second power input terminal, a first coil wound around a first axis and configured to generate a first magnetic field while electrical current flows through the first coil, and a second coil wound around a second axis configured to generate a second magnetic field while electrical current flows through the second coil. An electric switch connects or disconnects the first coil and second coil in series. Thus, the electric switch can energize or de-energize the second coil. A movable member, such as a rod, bar, spool, or hollow tube, influenced by the magnetic fields generated by the first and second coils is configured to move with respect to the first and second coils from a first position to a second position in response to the magnetic field generated by the first coil.