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US 4,065,739 AGranted
Reversible direction solenoid assembly
AssigneeThe Singer Company
InventorsWolfgang Jaffe, Wesley Robinson Peterson
Life of this patent
Estimating the term…
Abstract
A polarized reversible direction solenoid having a rectangular sheet of flexible permanently magnetized material wrapped around the armature. This magnetized flexible sheet permits the construction of very small reversible solenoids at a reasonable cost.
Claims4
A solenoid assembly which includes a current carrying coil having a throughbore therein and an armature assembly slidably disposed within said coil bore, wherein said armature assembly comprises:
- a. a core made of magnetic material;
- and
- b. a flexible sheet wrapped around and attached to a porton of said core within said coil bore, said flexible sheet being magnetizable material which has been permanently magnetized through its thickness.
Dependencies are inferred from the claim text.