Accession Number : ADD014196

Title :   Polarized Rotary Solenoid.

Descriptive Note : Patent, filed 9 Feb 87, patented 5 Apr 88,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Cooksey, George E

Report Date : 05 Apr 1988

Pagination or Media Count : 7

Abstract : A rotary solenoid providing opposite direction pivoting movement on opposite polarity d.c. energization. The solenoid has a pivoting shaft from which a permanent magnet armature having ends of opposite magnetic polarity extends transversely and oppositely. The armature is disposed between a pair of pole pieces each of which extends along the armature between its ends. The pole pieces are oppositely electromagnetically magnetized by a d.c. winding so that reversing the electrical polarity of the winding reverses the polarity of each pole piece and its attraction of repulsion of the armature ends. The pole pieces are opposite arms of a U-shaped ferromagnetic structure on which the winding is centrally wound, and the shaft is supported by a bearing in a nonferromagnetic bridge between the pole pieces. Patents. (RH)

Descriptors :   *ARMATURES, *FERROMAGNETIC MATERIALS, *MAGNETIC FIELDS, *PATENTS, *ROTATION, *SOLENOIDS, ELECTRICAL PROPERTIES, PERMANENT MAGNETS, POLARITY, POLARIZATION, WINDING

Subject Categories : Electrical and Electronic Equipment
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE