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Class Information
Number: 307/134
Name: Electrical transmission or interconnection systems > Switching systems > With operation facilitating feature
Description: Subject matter relating to means for facilitating the operation of the system.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7598629 |
Control circuit for a remotely controlled circuit breaker |
Oct. 6, 2009 |
| 7579707 |
Discharge prevention circuit and electronic equipment provided with the discharge prevention circuit |
Aug. 25, 2009 |
| 7535131 |
Smart switch |
May. 19, 2009 |
| 7482713 |
Switch controller |
Jan. 27, 2009 |
| 7358628 |
Configurable circuit and method for detecting the state of a switch |
Apr. 15, 2008 |
| 7332835 |
Micro-electromechanical system based switching module serially stackable with other such modules to meet a voltage rating |
Feb. 19, 2008 |
| 7196884 |
Apparatus and method for detecting the loss of a current transformer connection coupling a current differential relay to an element of a power system |
Mar. 27, 2007 |
| 7190092 |
Micro-electromechanical switch performance enhancement |
Mar. 13, 2007 |
| 7155603 |
Circuit arrangement for detecting the state of at least one electrical switch |
Dec. 26, 2006 |
| 7151234 |
Outlet panel for single pin connectors |
Dec. 19, 2006 |
| 7061143 |
Actuator unit with a base actuator an additional actuator and control unit |
Jun. 13, 2006 |
| 7049714 |
Method for determining the condition of a rotary switch |
May. 23, 2006 |
| 7026822 |
High voltage switching matrix for electrical safety compliance test equipment |
Apr. 11, 2006 |
| 6995482 |
Switching circuit and method therefor |
Feb. 7, 2006 |
| 6946752 |
Input power stabilizing circuit |
Sep. 20, 2005 |
| 6930409 |
Electromechanical switching device |
Aug. 16, 2005 |
| 6836029 |
Micro-electromechanical switch having a conductive compressible electrode |
Dec. 28, 2004 |
| 6806591 |
Method of shutting down a pluggable electrical unit |
Oct. 19, 2004 |
| 6807462 |
Switchgear cabinet air conditioning device |
Oct. 19, 2004 |
| 6750566 |
Bus access unit for a pluggable electrical unit |
Jun. 15, 2004 |
| 6707172 |
Self-normalling jack with electronically controlled normal circuit or relay |
Mar. 16, 2004 |
| 6590303 |
Single button MP3 player |
Jul. 8, 2003 |
| 6495932 |
DC power source unit |
Dec. 17, 2002 |
| 6426572 |
Switching function properly-alterable switch unit, and vehicle mounted device control apparatus including the same switch unit |
Jul. 30, 2002 |
| 6232676 |
Safety power on/off switching for hot pluggable cards |
May. 15, 2001 |
| 6111377 |
Control device for a multiphase electric motor |
Aug. 29, 2000 |
| 5825102 |
Fail-safe circuit |
Oct. 20, 1998 |
| 5789098 |
Method of detecting external voltage source for disablement of battery conservation mode in a portable communications device |
Aug. 4, 1998 |
| 5712515 |
Power source adaptor |
Jan. 27, 1998 |
| 5699222 |
Apparatus and method for programming and reviewing a plurality of parameters of electrical switching device |
Dec. 16, 1997 |
| 5679986 |
Synchronization of switchgear switching to waveform indices |
Oct. 21, 1997 |
| 5672919 |
Low current binary input subsystem |
Sep. 30, 1997 |
| 5619076 |
Method and apparatus for connection and disconnection of batteries to uninterruptible power systems and the like |
Apr. 8, 1997 |
| 5610453 |
Pulsewidth modulation (PWM) frequency slider |
Mar. 11, 1997 |
| 5604656 |
Electromechanical relays |
Feb. 18, 1997 |
| 5406128 |
Multicircuit control apparatus and control method therefor |
Apr. 11, 1995 |
| 5396107 |
Power source system |
Mar. 7, 1995 |
| 5394018 |
Microprocessor based electrical apparatrus with false AC input rejection |
Feb. 28, 1995 |
| 5266839 |
Adapter for asynchronous devices |
Nov. 30, 1993 |
| 5258654 |
Computer-checking of the position of a switch whose contacts where oxidized |
Nov. 2, 1993 |
| 5202585 |
Electronic device including improved connection device |
Apr. 13, 1993 |
| 5081405 |
Electrical actuator with means for preventing dither at a limit switch |
Jan. 14, 1992 |
| 5053907 |
Hybrid relay |
Oct. 1, 1991 |
| 5051606 |
Method of connecting and disconnecting a board in a hot state |
Sep. 24, 1991 |
| 5028809 |
Computer bus structure permitting replacement of modules during operation |
Jul. 2, 1991 |
| 4897557 |
Electronic control system, in particular for a printer |
Jan. 30, 1990 |
| 4855612 |
Switching current and a relay device employed therein |
Aug. 8, 1989 |
| 4851707 |
"Fritting" technique and apparatus for improving the sound of switches and connectors in audio circuits |
Jul. 25, 1989 |
| 4802051 |
Arc-free electromagnetic contactor |
Jan. 31, 1989 |
| 4780622 |
Apparatus for reducing stresses that initiate restrike of breakers in disconnecting capacitor banks |
Oct. 25, 1988 |
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