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US 5,470,043 AGranted
Magnetic latching solenoid
AssigneeLockheed Idaho Technologies Company
InventorsDonna J. Marts, John G. Richardson, Richard K. Albano, John L. Morrison, Jr.
Life of this patent
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Abstract
This invention discloses a D.C. magnetic latching solenoid that retains a moving armature in a first or second position by means of a pair of magnets, thereby having a zero-power requirement after actuation. The first or second position is selected by reversing the polarity of the D.C. voltage which is enough to overcome the holding power of either magnet and transfer the armature to an opposite position. The coil is then de-energized.
Claims9
A D.C. magnetic latching solenoid comprising:
- a. an electric coil;
- b. a movable iron armature within the coil, said armature having a longitudinal axis and first and second ends;
- c. first and second non-magnetic actuator rods attached respectively to the first and second ends of the armature on said longitudinal axis thereof, said rods passing through an aperture in first and second fixed magnets located proximate to the first and second ends of the armature, said magnets each having a like polarity adjacent the armature;
- and
- d. a coil polarity reversing means connecting to the electric coil, wherein applying a voltage of a first polarity moves the armature in linear motion along the longitudinal axis to a first position and applying a reverse polarity voltage moves the armature in linear motion along the longitudinal axis to a second opposite position, and the armature is then retained in either position by one or the other of said magnets after the voltage is removed.
2 more elements
A D.C. magentic latching solenoid comprising:
- a. an electric coil;
- b. a movable iron armature longitudinally aligned within the coil, said armature having first and second ends and a pair of non-magnetic actuators longitudinally aligned with said armature and fixed thereto;
- c. a pair of fixed magnets in linear proximity to the first and second ends of the armature located on a longitudinal axis of the armature, said magnets each having a like polarity adjacent the armature;
- and
- d. a coil polarity reversing means connecting to the electric coil, wherein applying a voltage of a first polarity moves the armature in linear motion to a first position and applying a reverse polarity voltage moves the armature in linear motion to a second opposite position, and the armature is then retained in either position by one or the other of the said magnets after the voltage is removed.
2 more elements
Dependencies are inferred from the claim text.