Solenoid-actuated valve

Claim 1

A SOLENOID-ACTUATED VALVE COMPRISING A BASE HAVING AN AXIAL CHAMBER, A FIRST FLUID FLOW PASSAGE OPENING INTO THE CHAMBER COAXIALLY WITH THE CHAMBER, AND A SPACED-APART SECOND FLUID FLOW PASSAGE OPENING INTO THE CHAMBER, A PORTION OF THE BASE DEFINING THE FIRST FLOW PASSAGE PROJECTING INTO THE CHAMBER; A TUBULAR SLEEVE WITHIN THE CHAMBER; A PLUG SECURED WITHIN THE END OF THE SLEEVE REMOVED FROM THE BASE AND INCLUDING A THIRD FLUID FLOW PASSAGE OPENING INTO THE SLEEVE COAXIALLY WITH THE SLEEVE, A PORTION OF THE PLUG DEFINING THE THIRD FLOW PASSAGE PROJECTING INTO THE SLEEVE; A PLUNGER OF MAGNETIC MATERIAL SLIDABLY MOVABLE WITHIN THE SLEEVE AND INCLUDING AN AXIAL CENTRAL PASSAGE HAVING A DIAMETER LARGER THAN EACH OF THE PROJECTING PORTIONS OF THE PLUNGER TO ENGAGE THE BASE OR THE PLUG WITHOUT ENGAGING THEIR RESPECTIVE PROJECTING PORTIONS; A CLOSURE MEMBER SLIDABLY MOVABLE WITHIN THE PLUNGER CENTRAL PASSAGE AND INCLUDING SEALING MEANS AT OPPOSITE ENDS DISPOSED TO ENGAGE THE PROJECTING PORTIONS OF THE BASE AND PLUG, RESPECTIVELY; SLIDE MEANS MOVABLY MOUNTED ON THE CLOSURE MEMBER TO BE ENGAGEABLE BY THE PLUNGER; FIRST SPRING MEANS BETWEEN THE PLUG AND THE SLIDE MEANS TO BIAS THE CLOSURE MEMBER TO CLOSE THE FIRST FLOW PASSAGE; SECOND SPRING MEANS DISPOSED BETWEEN THE SLIDE MEANS AND A PART OF THE CLOSURE MEMBER TO BIAS THE CLOSURE MEMBER TO CLOSE THE THIRD FLOW PASSAGE WHEN THE SLIDE MEANS IS MOVED TOWARD SAID PASSAGE BY THE PLUNGER; AND AN ELECTROMAGNETIC COIL AROUND THE SLEEVE FOR MOVING THE PLUNGER AGAINST THE BIASING FORCE OF THE FIRST SPRING MEANS WHEN THE COIL IS ENERGIZED.