US PATENT SUBCLASS 335 / 233
.~.~.~.~.~ With armature-locking means

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

209  DF  MAGNETS AND ELECTROMAGNETS {10}
220  DF  .~ With magneto-mechanical motive device (e.g., electromagnet with armature) {21}
229  DF  .~.~ With permanent magnet {1}
230  DF  .~.~.~ Polarized electromagnet {4}
232  DF  .~.~.~.~ With plural armatures {1}
233.~.~.~.~.~ With armature-locking means

DEFINITION

Classification: 335/233

(under subclass 232) Subject matter including means to lock at least one of the armatures of the polarized electromagnet in either the open or closed position, responsive to the energization of the electromagnet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

21+, for automatic circuit interrupting type switches with latch means.

77, for switches combined with motors, the switch having locking means.

120, for multiple contact switches with interlocking plural armatures.

164, for switches with manually or gravity operated latch means.

167+, for switches with latching means. 253+, for electromagnets with armature latch means.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

192+, and 194 for electric circuit for magnets or relays with interlocking or holding means.