US PATENT SUBCLASS 70 / 277
.~.~ Electrical type (e.g., solenoid)

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
275  DF  .~ Using a powered device (e.g., motor) {2}
277.~.~ Electrical type (e.g., solenoid) {8}
278.1  DF  .~.~.~> Actuated after correct combination recognized (e.g., numerical, alphabetical, or magnet(s) pattern) {2}
278.7  DF  .~.~.~> And details of blocking system (e.g., linkage, latch, pawl, spring)
279.1  DF  .~.~.~> And alternately mechanically actuated by a key, dial, etc.
280  DF  .~.~.~> Projected and retracted electrically
281  DF  .~.~.~> Projected electrically only
282  DF  .~.~.~> Retracted electrically only
283  DF  .~.~.~> Dogging manual operator
283.1  DF  .~.~.~> Key initiated actuation of device

DEFINITION

Classification: 70/277

Electrical type (e.g., solenoid):

(under subclass 275) Subject matter having a motivating energy using voltage and amperage.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

172, for control circuits for electromagnetic devices noting code responsive plural relays or solenoids sequentially operated.