Water valve operating solenoid
AssigneeThe Toro Company
InventorEdwin J. Hunter
Life of this patent
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Abstract
A water valve operating solenoid is disclosed having a unitary housing including a relatively thin plunger tube and a threaded nipple and formed of a non-magnetic plastic material. A coil bobbin having inner reinforcing sleeves is positioned around the plunger tube with a split sleeve bobbin cover positioned around the bobbin. Split washers are positioned at both ends to concentrate the flux path.
Claims11
A water valve operating solenoid having an armature for controlling the flow of fluid through a port comprising:
- unitary housing means formed of a nonmagnetic plastic material and having a thin wall inner tube formed to enable the armature to be displaced therein, and
- coil bobbin means secured within said unitary housing means and around said inner tube and including means for providing magnetic flux in response to an electrical signal to displace said armature to thereby control the flow of fluid through the port.
A solenoid having an armature and a coil bobbin having a central axial bore and an electrical conductor wound thereabout, comprising:
- housing means formed of a non-magnetic material providing a cavity receiving said coil bobbin and including an inner tube portion of such non-magnetic material extending into said cavity and into said bobbin bore, said tube having an open end opening outwardly of said housing to receive said armature therein;
- and
- means for providing a magnetic flux path within said non-magnetic housing and about said bobbin for concentrating magnetic flux of said electrical conductor to displace said armature within said non-magnetic material tube when electrical current is passed through said conductor.
Dependencies are inferred from the claim text.