US PATENT SUBCLASS 335 / 28
.~.~.~.~ Automatic combined with timing or delay 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}
6  DF  .~ Automatic circuit-interrupting devices (e.g., circuit-protective devices) {12}
21  DF  .~.~ With latch or trip means {6}
26  DF  .~.~.~ Reclosing or resetting {2}
28.~.~.~.~ Automatic combined with timing or delay means {4}
29  DF  .~.~.~.~.~> Fluid-controlled
30  DF  .~.~.~.~.~> Mechanical motor-controlled (e.g., clock movement)
31  DF  .~.~.~.~.~> Thermally actuated
32  DF  .~.~.~.~.~> With counting or integrating means (e.g., repetitive for given number of reclosures) {2}

DEFINITION

Classification: 335/28

(under subclass 26) Subject matter wherein the reclosing or resetting structure is automatically operated and is combined with significant means whereby one or both operations take place after a time interval longer than the normal operating interval or after a fixed or predetermined interval which may be shorter than the normal interval.

SEE OR SEARCH THIS CLASS, SUBCLASS:

39+, for magnetic latch or trip means with time delay means.

59+, for electromagnetically actuated switches of the retarded or delayed type.

139, for step-by-step switches with timing or index means.

218, for temperature responsive magnets and electromagnets with time delay means. 239+, for electromagnet with armature time delay movement control means.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

33+, for nonmagnetically actuated switches of the retarded type.

307, Electrical Transmission or Interconnection Systems,

14+, for switching systems with time delay or retardation means.

318, Electricity: Motive Power Systems, and

445+, for automatic stopping and/or starting means with time delay.

361, Electricity: Electrical Systems and Devices,

91.3, for overvoltage protection with time delay means and subclasses 195+ for relay systems with time delay features.

388, Electricity: Motor Control Systems, art collection 921 for motor control systems including time delay means.