| Patent | Date |
|---|
Releasable Net Apparatus And System
App 20210283486 - Engel; Joseph C. | 2021-09-16 |
Circuit interrupter
Grant 7,952,842 - Engel May 31, 2 | 2011-05-31 |
Arc fault circuit interrupter and method of parallel and series arc fault detection
Grant 7,558,033 - Zhou , et al. July 7, 2 | 2009-07-07 |
Circuit Interrupter
App 20090086387 - ENGEL; JOSEPH C. | 2009-04-02 |
Arc Fault Circuit Interrupter And Method Of Parallel And Series Arc Fault Detection
App 20080204949 - ZHOU; XIN ; et al. | 2008-08-28 |
Wireless system for one or more electrical switching apparatus
Grant 7,417,554 - Benke , et al. August 26, 2 | 2008-08-26 |
Arc fault detection apparatus, method and system for an underground electrical conductor
Grant 7,319,574 - Engel January 15, 2 | 2008-01-15 |
Circuit breaker including a non-mechanical, electronic status or control circuit
Grant 7,280,337 - Engel October 9, 2 | 2007-10-09 |
Power supply circuit, back-pack power supply module and circuit interrupter including the same
Grant 7,280,338 - Juds , et al. October 9, 2 | 2007-10-09 |
Arc fault detector and method for locating an arc fault
Grant 7,253,640 - Engel , et al. August 7, 2 | 2007-08-07 |
Self-powered power bus sensor employing wireless communication
Grant 7,253,602 - Shvach , et al. August 7, 2 | 2007-08-07 |
System for wireless communications among plural electrical distribution devices of an electrical distribution enclosure
App 20070143043 - Wafer; John A. ; et al. | 2007-06-21 |
Two-stage, wide range power supply for a network protector control relay
App 20070002596 - Kenny; Thomas J. ; et al. | 2007-01-04 |
Self-powered power bus sensor employing wireless communication
Grant 7,145,322 - Solveson , et al. December 5, 2 | 2006-12-05 |
Arc fault detection apparatus, method and system for an underground electrical conductor
App 20060262466 - Engel; Joseph C. | 2006-11-23 |
Power supply circuit, back-pack power supply module and circuit interrupter including the same
App 20060256470 - Juds; Mark A. ; et al. | 2006-11-16 |
Self-learning server communicating values from a plurality of communicating devices of one communication network to a client of another communication network
App 20060224711 - Engel; Joseph C. ; et al. | 2006-10-05 |
Wireless system for one or more electrical switching apparatus
App 20060119344 - Benke; James J. ; et al. | 2006-06-08 |
Self-powered power bus sensor employing wireless communication
App 20060076946 - Shvach; Randal P. ; et al. | 2006-04-13 |
Self-powered power bus sensor employing wireless communication
App 20060076838 - Solveson; Mark G. ; et al. | 2006-04-13 |
Circuit breaker including a non-mechanical, electronic status or control circuit
App 20060028781 - Engel; Joseph C. | 2006-02-09 |
Three-pole circuit interrupter
App 20060012931 - Engel; Joseph C. ; et al. | 2006-01-19 |
Test apparatus for power circuits of an electrical distribution device
Grant 6,948,846 - Engel September 27, 2 | 2005-09-27 |
Translator apparatus for two communication networks
Grant 6,901,432 - Peterson , et al. May 31, 2 | 2005-05-31 |
Test apparatus for power circuits of an electrical distribution device
App 20050089079 - Engel, Joseph C. | 2005-04-28 |
Arc fault detector and method for locating an arc fault
App 20040136124 - Engel, Joseph C. ; et al. | 2004-07-15 |
Ground fault/arc fault circuit interrupter and method of testing the same with a test button and a reset button
Grant 6,720,872 - Engel , et al. April 13, 2 | 2004-04-13 |
Electrical switching apparatus including glowing contact protection
Grant 6,707,652 - Engel March 16, 2 | 2004-03-16 |
Electrical Switching Apparatus Including Glowing Contact Protection
App 20040008460 - Engel, Joseph C. | 2004-01-15 |
Circuit interrupter trip unit
App 20030202305 - Engel, Joseph C. ; et al. | 2003-10-30 |
Translator apparatus for two communication networks
App 20030126222 - Peterson, Clyde O. ; et al. | 2003-07-03 |
Circuit breaker responsive to repeated in-rush currents produced by a sputtering arc fault
Grant 6,057,997 - Mackenzie , et al. May 2, 2 | 2000-05-02 |
Low cost apparatus for detecting arcing faults and circuit breaker incorporating same
Grant 5,963,405 - Engel , et al. October 5, 1 | 1999-10-05 |
Circuit breaker responsive to repeated in-rush currents produced by a sputtering arc fault
Grant 5,940,256 - MacKenzie , et al. August 17, 1 | 1999-08-17 |
Panelboard for controlling and monitoring power or energy
Grant 5,861,683 - Engel , et al. January 19, 1 | 1999-01-19 |
Apparatus for detecting and responding to series arcs in AC electrical systems
Grant 5,726,577 - Engel , et al. March 10, 1 | 1998-03-10 |
Low cost apparatus for detecting arcing faults and circuit breaker incorporating same
Grant 5,691,869 - Engel , et al. November 25, 1 | 1997-11-25 |
Apparatus providing protection and metering in an ac electrical system utilizing a multi-function sampling technique
Grant 5,627,718 - Engel , et al. May 6, 1 | 1997-05-06 |
Circuit interrupter providing protection and waveform capture for harmonic analysis
Grant 5,600,527 - Engel , et al. February 4, 1 | 1997-02-04 |
Electrical switches with current protection interfaced with a remote station and a portable local unit
Grant 5,596,473 - Johnson , et al. January 21, 1 | 1997-01-21 |
Motor starter with dual-slope integrator
Grant 5,579,194 - Mackenzie , et al. November 26, 1 | 1996-11-26 |
Digitally controlled circuit interrupter with improved automatic selection of sampling interval for 50 Hz and 60 Hz power systems
Grant 5,559,719 - Johnson , et al. September 24, 1 | 1996-09-24 |
Apparatus for digitizing ac signals of unknown or changing frequency
Grant 5,544,065 - Engel , et al. August 6, 1 | 1996-08-06 |
Overcurrent trip unit with separately adjustable neutral protection
Grant 5,483,408 - Matsko , et al. January 9, 1 | 1996-01-09 |
Circuit breaker - associated backpack unit for lower-link communication with a PC computer monitoring system and energy monitoring system using a plurality of such backpack units
Grant 5,420,799 - Peterson , et al. May 30, 1 | 1995-05-30 |
Thermal modeling of overcurrent trip during power loss
Grant 5,418,677 - Engel May 23, 1 | 1995-05-23 |
Energy monitoring system for a plurality of local stations with snapshot polling from a central station
Grant 5,384,712 - Oravetz , et al. * January 24, 1 | 1995-01-24 |
Energy monitoring system for a plurality of local stations with snapshot polling from a central station
Grant 5,315,531 - Oravetz , et al. May 24, 1 | 1994-05-24 |
Sure chip plus
Grant 5,270,898 - Elms , et al. December 14, 1 | 1993-12-14 |
Electronic circuit breaker with protection against sputtering arc faults and ground faults
Grant 5,224,006 - MacKenzie , et al. June 29, 1 | 1993-06-29 |
Integral capacitive divider bus bar voltage measuring apparatus and combined current sensor
Grant 5,017,859 - Engel , et al. May 21, 1 | 1991-05-21 |
Electromagnetic contactor with lightweight wide range current transducer with sintered powdered metal core
Grant 4,980,794 - Engel December 25, 1 | 1990-12-25 |
Solid-state trip unit for DC circuit breakers
Grant 4,956,741 - Murphy , et al. September 11, 1 | 1990-09-11 |
Light driven remote system and power supply therefor
Grant 4,912,522 - Oates , et al. March 27, 1 | 1990-03-27 |
AC electric energy meter having drive circuit including stepper motor for driving mechanical register
Grant 4,896,105 - Engel , et al. January 23, 1 | 1990-01-23 |
Electromagnetic contactor with algorithm controlled closing system
Grant 4,833,565 - Bauer , et al. * May 23, 1 | 1989-05-23 |
Electromagnetic contactor with universal control
Grant 4,748,343 - Engel May 31, 1 | 1988-05-31 |
Automatic transfer switch for a wide range of source voltage
Grant 4,747,061 - Lagree , et al. May 24, 1 | 1988-05-24 |
Master metering module with voltage selector
Grant 4,734,639 - Saletta , et al. March 29, 1 | 1988-03-29 |
Programmed overcurrent protection control apparatus and method of operating the same
Grant 4,722,059 - Engel , et al. January 26, 1 | 1988-01-26 |
Supervisory circuit for a programmed processing unit
Grant 4,674,035 - Engel June 16, 1 | 1987-06-16 |
Automatic transfer switch with delay
Grant 4,672,227 - Lagree , et al. June 9, 1 | 1987-06-09 |
Bidirectional bus coupler presenting peak impedance at carrier frequency
Grant 4,646,319 - Engel , et al. February 24, 1 | 1987-02-24 |
Starting and operating method and apparatus for discharge lamps
Grant 4,525,650 - Hicks , et al. June 25, 1 | 1985-06-25 |
Programming and control device for modified lead ballast for HID lamps
Grant 4,503,364 - Engel March 5, 1 | 1985-03-05 |
Circuit interrupter with front panel numeric display
Grant 4,476,511 - Saletta , et al. October 9, 1 | 1984-10-09 |
Optical scanning system
Grant 4,471,217 - Engel September 11, 1 | 1984-09-11 |
Packaged add-on device for lead-type ballast and luminaire which incorporates such packaged add-on device
Grant 4,455,595 - Engel , et al. June 19, 1 | 1984-06-19 |
Unitary light source comprising compact HID lamp and incandescent ballast filament
Grant 4,438,369 - Hicks , et al. March 20, 1 | 1984-03-20 |
Circuit interrupter with digital trip unit and automatic reset
Grant 4,428,022 - Engel , et al. January 24, 1 | 1984-01-24 |
Circuit interrupter with digital trip unit and means to enter trip settings
Grant 4,351,012 - Elms , et al. September 21, 1 | 1982-09-21 |
Circuit interrupter with multiple display and parameter entry means
Grant 4,351,013 - Matsko , et al. September 21, 1 | 1982-09-21 |
Circuit interrupter with digital trip unit and optically-coupled data input/output system
Grant 4,338,647 - Wilson , et al. July 6, 1 | 1982-07-06 |
Circuit interrupter with energy management functions
Grant 4,335,437 - Wilson , et al. June 15, 1 | 1982-06-15 |
Circuit interrupter with remote indicator and power supply
Grant 4,335,413 - Engel , et al. June 15, 1 | 1982-06-15 |
Circuit interrupter with digital trip unit and power supply
Grant 4,331,999 - Engel , et al. May 25, 1 | 1982-05-25 |
Circuit interrupter with digital trip unit and style designator circuit
Grant 4,331,998 - Matsko , et al. May 25, 1 | 1982-05-25 |
Energy-conserving illumination system
Grant 4,292,570 - Engel * September 29, 1 | 1981-09-29 |
People protecting ground fault circuit breaker utilizing waveform characteristics
Grant 4,247,879 - Elms , et al. January 27, 1 | 1981-01-27 |
Background light intensity compensation circuit for a line scan camera system
Grant 4,243,876 - Engel , et al. January 6, 1 | 1981-01-06 |
Linear light source
Grant 4,186,431 - Engel , et al. January 29, 1 | 1980-01-29 |
Ground fault circuit interrupter with grounded neutral protection
Grant 4,180,841 - Engel December 25, 1 | 1979-12-25 |
Ballast circuit for accurately regulating HID lamp wattage
Grant 4,162,429 - Elms , et al. July 24, 1 | 1979-07-24 |
Energy-conserving illumination system
Grant 4,147,962 - Engel April 3, 1 | 1979-04-03 |
People-protecting ground fault circuit interrupter
Grant 4,080,640 - Elms , et al. March 21, 1 | 1978-03-21 |
Starting and operating apparatus for high pressure sodium lamp ballasts
Grant 4,072,878 - Engel , et al. February 7, 1 | 1978-02-07 |
Apparatus and method for sustaining the operation of HID lamps
Grant 4,057,750 - Elms , et al. November 8, 1 | 1977-11-08 |
High pressure discharge lamp dimming circuit utilizing variable duty-cycle photocoupler
Grant 4,016,451 - Engel April 5, 1 | 1977-04-05 |
Circuitry with zener diode voltage surge suppressor connected to serve as half wave rectifier
Grant 3,939,363 - Engel February 17, 1 | 1976-02-17 |
Sensing Amplifier And Trip Circuit Particularly For Ground Fault Circuit Interrupter
Grant 3,852,642 - Engel , et al. December 3, 1 | 1974-12-03 |
Low Cost Transistorized Inverter
Grant 3,753,071 - Engel , et al. August 14, 1 | 1973-08-14 |
Dynamic Reactorless High-frequency Vapor Lamp Ballast
Grant 3,648,106 - Engel , et al. March 7, 1 | 1972-03-07 |
Phase-controlled Universal Ballast For Discharge Devices
Grant 3,590,316 - Engel , et al. June 29, 1 | 1971-06-29 |
| 