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Class Information
Number: 335/28
Name: Electricity: magnetically operated switches, magnets, and electromagnets > Electromagnetically actuated switches > Automatic circuit-interrupting devices (e.g., circuit-protective devices) > With latch or trip means > Reclosing or resetting > Automatic combined with timing or delay means
Description: 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.

Sub-classes under this class:

Class Number Class Name Patents
335/29 Fluid-controlled 6
335/30 Mechanical motor-controlled (e.g., clock movement) 5
335/31 Thermally actuated 7
335/32 With counting or integrating means (e.g., repetitive for given number of reclosures) 4

Patents under this class:

Patent Number Title Of Patent Date Issued
8564389 Electromagnetic circuit interrupter Oct. 22, 2013
8013695 Electronic overload relay Sep. 6, 2011
7557682 Inertial solenoid delay for the opening of medium voltage circuit breakers Jul. 7, 2009
6940373 Fast engage, slow release electrical actuator Sep. 6, 2005
6036447 Control valve having a ground connection for the actuator coil Mar. 14, 2000
5663712 Electrical contact position indicator assembly Sep. 2, 1997

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