Solenoid and valve assembly having a linear output

Details Solenoid and valve assembly having a linear output Solenoid and valve assembly having a linear output

2005-09-13

2005-09-13

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

C251S129150

Reexamination Certificate

active

06943657

ABSTRACT:
A solenoid assembly is used with a valve assembly to regulate the flow of fluid therethrough. The solenoid assembly includes a solenoid frame extending between a first end and a second end. A primary plate is disposed adjacent the first end of the solenoid frame. The primary plate includes a flux concentrating cylinder extending out therefrom. A secondary plate is disposed adjacent the second end of the solenoid frame. A bobbin is disposed within the solenoid frame between the primary and secondary plates. The bobbin defines a core and has a wire coil wrapped about the core. The wire coil receives an electric current to induce a magnetic field thereabout. The solenoid assembly also includes a plunger that is extendable through a portion of the core of the bobbin and is movable at a defined force with respect to the bobbin. The plunger moves in response to changes in the magnetic field. The plunger includes a flux extension extending out therefrom coaxially with the plunger. The flux extension includes a relief portion cut out of the flux extension to change the force created by the plunger as it moves through the core.

REFERENCES:
patent: 6182646 (2001-02-01), Silberstein et al.

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