US PATENT SUBCLASS 335 / 167
.~ Latching means

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

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
167.~ Latching means {4}
168  DF  .~.~> With positive lock (against movement)
169  DF  .~.~> Plural or with auxiliary latch
170  DF  .~.~> Magnetically operated
171  DF  .~.~> Including spring-biasing or energy-storage means

DEFINITION

Classification: 335/167

(under subclass 2) Subject matter wherein the structure includes specific details of operating means whereby at least one set of contacts may be restrained in one of two normal conditions (open or closed). The latching means usually consists of structure adapted for mechanically maintaining a contact actuating means, such as a toggle arrangement, armature or other carrier, in a given position independently of the magnetic control means so that once the contacts are closed, or opened, the magnetizing current may be cut off and the contacts remain in their opened or closed condition until a tripping action takes place.

SEE OR SEARCH THIS CLASS, SUBCLASS:

21+, for automatic circuit interrupting devices with latch or trip means.

77, for motor actuated switches with latch or trip means.

113, for automatic telephone type multiple contact switches with latching means.

164, for manual or gravity operated latch with electromagnetic trip. 165, for contact actuating means unitary with latch or trip.

166, for switches with latch or trip reset means.

253+, for electromagnet and armature with armature latch means.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

2+, for automatic latch or trip mechanisms and subclasses 527+ for mechanical latching or detent devices in general.

200, Electricity: Circuit Makers and Breakers,

83, for fluid pressure switches of the diaphragm type with latching means and subclass 169 for latch details.

361, Electricity: Electrical Systems and Devices,

139+, for electric circuits for relays and electromagnets with latch mechanisms.