James T. Libert

Person

Waukesha, WI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus for controlling firing of thyristors relative to a curren...
- Patent number 4,912,390
- Issue date Mar 27, 1990
- Square D Company
- Earl J. Curran
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Line to line to line to neutral converter
- Patent number 4,887,018
- Issue date Dec 12, 1989
- Square D Company
- James T. Libert
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Thyristor driver turn-off circuit
- Patent number 4,876,468
- Issue date Oct 24, 1989
- Square D Company
- James T. Libert
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Control circuitry including phase failure relay
- Patent number 4,802,053
- Issue date Jan 31, 1989
- Square D Company
- Roger C. Wojtak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Overload protection apparatus for emulating the response of a therm...
- Patent number 4,796,142
- Issue date Jan 3, 1989
- Square D Company
- James T. Libert
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Phase unbalance detector
- Patent number 4,724,503
- Issue date Feb 9, 1988
- Square D Company
- James T. Libert
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electronic delay timer
- Patent number 4,714,977
- Issue date Dec 22, 1987
- Square D Company
- John S. Hoelzer
- G04 - HOROLOGY
Information Patent Grant
Self calibration of the thyristor firing angel of a motor controlle...
- Patent number 4,710,692
- Issue date Dec 1, 1987
- Square D Company
- James T. Libert
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Up-to-speed enable for jam under load and phase loss
- Patent number 4,647,825
- Issue date Mar 3, 1987
- Square D Company
- Mark V. Profio
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Reduced voltage starter with voltage ramp control
- Patent number 4,634,951
- Issue date Jan 6, 1987
- Square D Company
- Julian C. Kampf
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Abort cycle timer
- Patent number 4,409,640
- Issue date Oct 11, 1983
- Square D Company
- Mark V. Profio
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Anti-telegraph control circuit for electromagnet coil
- Patent number 4,344,102
- Issue date Aug 10, 1982
- Square D Company
- Julian C. Kampf
- H01 - BASIC ELECTRIC ELEMENTS

James T. Libert

Person

Patents Grantslast 30 patents

Apparatus for controlling firing of thyristors relative to a curren...

Line to line to line to neutral converter

Thyristor driver turn-off circuit

Control circuitry including phase failure relay

Overload protection apparatus for emulating the response of a therm...

Phase unbalance detector

Electronic delay timer

Self calibration of the thyristor firing angel of a motor controlle...

Up-to-speed enable for jam under load and phase loss

Reduced voltage starter with voltage ramp control

Abort cycle timer

Anti-telegraph control circuit for electromagnet coil