US PATENT SUBCLASS 327 / 392
.~ Delay controlled switch (e.g., fixed, single time of delay control, etc.)

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

365  DF  GATING (I.E., SWITCHING INPUT TO OUTPUT) {12}
392.~ Delay controlled switch (e.g., fixed, single time of delay control, etc.) {6}
393  DF  .~.~> With variable or multiple adjustable time of delay control (e.g., variable charge-discharge, on-delay/off-delay control, etc.) {4}
398  DF  .~.~> For predetermined time period
399  DF  .~.~> With field-effect device
400  DF  .~.~> Propagation through plural delay devices or paths
401  DF  .~.~> With plural switching elements (e.g., sequential, etc.)
402  DF  .~.~> Including negative resistance device in delay circuit (e.g., unijunction transistor, etc.)

DEFINITION

Classification: 327/392

Delay controlled switch (e.g., fixed, single time of delay control, etc.):

(under subclass 365) Subject matter wherein there is a recited significant time offset between the occurrence of a gating control signal and the actual initiation of the gating operation.

(1) Note. Time delay network systems which control the operation of a recited specific load circuit such as a motor, a relay, a display system, etc., are classified elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

141+, for signal synchronization.

231+, for phase shift of an input signal which is less than the period thereof.

261+, for time delay in producing an output waveform.

SEE OR SEARCH CLASS

318, Electricity: Motive Power Systems, 141+, for automatic generator control with time delay and subclasses 445+ for motive power systems with time delay, per

se.

323, Electricity: Power Supply or Regulation Systems,

220+, 234+, 304+, and 318+ for load controlled or regulated systems.

361, Electricity: Electrical Systems and Devices,

91.3, for overvoltage protection including time delay, and subclasses 195+ for time delay networks which control a relay load switching operation.

388, Electricity: Motor Control Systems, cross reference art collection 921 for running-speed control systems including a time delay.