Claims
- 1. A high efficiency lever-type action magnet comprising:
- a frame;
- a solenoid consisting of an electrical coil having a first axis and a ferromagnetic, elongated core having a second axis, said core extending through and being coaxial with said coil, said solenoid being fixedly mounted on said frame;
- an armature mounted for pivotal motion with respect to said solenoid and having a free end movable along a path transverse to the axis of said solenoid core between a rest position when said coil is not energized, in which said armature free end is spaced toward one side of a free end of said core, and an activated position when said coil is energized, in which said armature free end overlaps said free end of said core;
- bias means connected to said armature to urge it toward its rest position; and
- permanent magnet means magnetizing said free end of said armature in a direction to provide a magnetic pole adjacent said free end of said core to produce a magnetic flux path in said armature free end which has an axis coaxial with the axis of said core when said armature is in its activated position, and parallel to said core axis when said armature is in said rest position, energization of said solenoid moving said armature along said path transverse to the axis of said core, said armature having a motion characteristic determined in part by the inertia of the armature, the urging force of said bias means, and the energization of said solenoid coil, said permanent magnet thereby controlling the mechanical force supplied to said armature to increase the efficiency of said action magnet.
- 2. The action magnet of claim 1, wherein said permanent magnet means includes a permanent magnet mounted on said armature, said permanent magnet having first and second parallel, spaced, oppositely polarized faces, and wherein said first face is adjacent said free end of said armature.
- 3. The action magnet of claim 2, wherein said armature is generally L-shaped.
- 4. The action magnet of claim 2, wherein said armature has an elongated level arm portion extending generally parallel to, and spaced from, said solenoid core axis, and an end portion extending from said lever arm portion toward said ores end of said core.
- 5. The action magnet of claim 4, wherein said end portion of said armature is shaped to provide a selected motion characteristic for said armature in response to energization of said solenoid.
- 6. The action magnet of claim 1, wherein said permanent magnet means is adjacent the path of said movable armature.
- 7. The action magnet of claim 1, wherein said permanent magnet means is spaced from said one end of said core to provide a gap therebetween, and wherein said free end of said armature moves into said gap upon energization of said solenoid coil.
- 8. The action magnet of claim 1, further including adjustable damping means engaging said movable armature.
- 9. The action magnet of claim 1, further including pipe valve means mounted for motion with said armature along a second path transverse to said solenoid core.
- 10. The action magnet of claim 9, wherein said pipe valve means includes valve pad means for closing the aperture of an organ wind chest when said armature is in said rest position and for opening the aperture upon energization of said solenoid, the motion characteristic of said armature being selected to open said aperture with decreased power requirements.
- 11. A high efficiency lever-type action magnet, comprising:
- a frame;
- a solenoid consisting of an elongated core of ferromagnetic material surrounded by a coil, said solenoid having an axis and being fixedly mounted on said frame;
- a movable armature hingedly connected at one end of said frame to form a lever having a free end movable along a path transverse to the axis of said solenoid core between a rest position, in which said free end is spaced toward one side of the axis of said solenoid, and an activated position, in which said free end overlaps one end of said core and forms a gap therebetween;
- bias means connected to said armature to urge it toward its rest position;
- magnet means magnetizing said free end of said lever to produce a magnetic flux path in said free end which has an axis coaxial with the axis of said solenoid when said lever is in its activated position, whereby said magnet means increases the magnetic flux across said gap to substantially increase the mechanical force applied to said armature by energization of said solenoid coil to thereby increase the efficiency of said action magnet.
- 12. The action magnet of claim 11, wherein said free end of said lever is located between said magnet means and said end of said core when said lever is in said activated position.
- 13. The action magnet of claim 12, wherein said magnet means is a permanent magnet.
- 14. The action magnet of claim 12, wherein said magnet means is mounted on said free end of said lever.
- 15. The action magnet if claim 12, further including a mounting bracket adjacent said solenoid, and means for mounting said magnet means on said mounting bracket to position said magnet means adjacent but spaced from said end of said core to define an armature space therebetween into which said free end of said lever moves upon energization of said solenoid coil.
- 16. The action magnet of claim 15, wherein said magnet means is a permanent magnet.
- 17. The action magnet of claim 15 further including musical instrument operating means connected to said armature.
- 18. The action magnet of claim 17, wherein said operating means is a pipe valve.
- 19. The action magnet of claim 17, wherein said operating means activates a musical instrument in accordance with the activation characteristic of said armature.
BACKGROUND OF THE INVENTION
This application is a continuation-in-part of U.S. application Ser. No. 915,350, filed Oct. 6, 1986, now U.S. Pat. No. 4,726,277, issued Feb. 23, 1988.
US Referenced Citations (11)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
915350 |
Oct 1986 |
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