Li L Yu

US Patent:

20230020292, Jan 19, 2023

Filed:

Sep 20, 2022

Appl. No.:

17/948457

Inventors:

- DUBLIN 4, IE
LI YU - BRIDGEVILLE PA, US

Assignee:

EATON INTELLIGENT POWER LIMITED - DUBLIN 4

International Classification:

H01F 7/08
H01F 7/06
H01F 7/02
H01F 27/28

Abstract:

Coil-based actuators for use in opening and closing the separable contacts of circuit interrupters provide increased initial velocity for opening strokes and damping at the end of opening strokes. Electronics for adjusting the current profile of current supplied to coil-based actuators additionally provide increased initial velocity for opening strokes and damping at the conclusion of opening strokes.

US Patent:

20200066468, Feb 27, 2020

Filed:

Aug 21, 2018

Appl. No.:

16/106772

Inventors:

- Dublin 4, IE
Steven Zhenghong Chen - Moon Township PA, US
Li Yu - Bridgeville PA, US
Andrew A. Rockhill - Waukesha WI, US
Robert W. Mueller - Aliquippa PA, US
David R. Rohn - Venetia PA, US

International Classification:

H01H 33/666
H01H 33/664
H01F 7/08
H01F 7/02

Abstract:

A circuit interrupter system includes a vacuum circuit interrupter having a vacuum chamber that contains a fixed contact and a moveable contact. A non-conductive rod extends from the moveable contact. One or more Thomson coils are wound around the rod, and one or more armatures are connected to the rod. When a driver energizes one of the Thomson coils, a corresponding armature will be repelled from that Thomson coil and move the rod to open or close the contacts of the vacuum circuit interrupter. The system also may include a damper that provides an active damping force rod when the rod is moved to open and/or close the vacuum circuit interrupter.

US Patent:

20180151307, May 31, 2018

Filed:

Jan 29, 2018

Appl. No.:

15/881997

Inventors:

- Cleveland OH, US
LI YU - Pittsburgh PA, US
SOMASUNDARA RAO MATU - Maharastra, IN

Assignee:

EATON CORPORATION - CLEVELAND OH

International Classification:

H01H 1/02
H01H 33/664
H01H 33/66
H01H 33/662

Abstract:

An electrical contact for a vacuum switching apparatus. The vacuum switching apparatus includes a second electrical contact. The electrical contact includes a hub portion and a plurality of petal portions each extending from the hub portion. Each of the plurality of petal portions has a first surface and a second surface. The first surface faces in a first direction and is structured to engage the second electrical contact. The second surface faces in a second direction generally opposite the first direction. At least one of the plurality of petal portions further has a grooved portion extending inwardly from the second surface toward the first surface.

US Patent:

20180082812, Mar 22, 2018

Filed:

Sep 19, 2016

Appl. No.:

15/268716

Inventors:

- Cleveland OH, US
Li Yu - Pittsburgh PA, US
Jiong Chen - Shanghai, CN
Mark Mao - Shanghai, CN
Chao Xin - Shanghai, CN
Yujie Yang - Hangzhou, CN

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

H01H 33/66
H01F 38/14

Abstract:

A cooling system for a circuit breaker is provided. The cooling system includes a temperature management unit, a power assembly, and a heat dissipating assembly. The temperature management unit is structured to detect the temperature at one of the circuit breaker or the conductor assembly. The power assembly is structured to harvest energy from the circuit breaker. The heat dissipating assembly includes a number of convection units, each heat convection unit is disposed immediately adjacent a number of the heat exchanging element.

US Patent:

20170194113, Jul 6, 2017

Filed:

Mar 20, 2017

Appl. No.:

15/462941

Inventors:

- Cleveland OH, US
Chao Xin - Shanghai, CN
Jiong Chen - Shanghai, CN
Mark Mao - Shanghai, CN
Li Yu - Pittsburgh PA, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

H01H 9/54
H01H 71/10
G01R 31/327

Abstract:

A failure prediction assembly is structured to monitor circuit breaker assembly sub-assemblies and their component's characteristics. The failure prediction assembly includes a sensor supported D-shaft and a sensor assembly including a housing and a number of sensors. The sensor assembly housing defines a D-shaft passage. A control unit is in electronic communication with the sensor assembly. The sensor assembly housing is coupled to the circuit breaker sidewalls with the sensor assembly housing D-shaft passage aligned with the circuit breaker sidewall D-shaft passages. The sensor supported D-shaft is rotatably coupled to the sensor assembly with the sensor supported D-shaft disposed through said sensor assembly housing D-shaft passage.

US Patent:

20170045481, Feb 16, 2017

Filed:

Aug 13, 2015

Appl. No.:

14/825219

Inventors:

- Cleveland OH, US
Koustubh Dnyandeo Ashtekar - Moon Township PA, US
Li Yu - Pittsburgh PA, US
Jiong Chen - Shanghai, CN
Fangji Wu - Shanghai, CN
He Yang - Shanghai, CN
Wilbert de Vries - Suzhou, CN

Assignee:

EATON CORPORATION - Cleveland OH

International Classification:

G01N 29/44
G01N 29/46

Abstract:

A component monitoring system structured to monitor circuit breaker assembly component characteristics is provided. The component monitoring system includes a record assembly, a number of vibration sensor assemblies, a comparison assembly, and an output assembly. The record assembly includes selected nominal data for a selected circuit breaker component. The vibration sensor assembly is structured to measure a number of actual component characteristics for a substantial portion of the circuit breaker assembly and to transmit actual component characteristic output data. The comparison assembly is structured to receive an electronic signal from said record assembly and said sensor assemblies, to compare each sensor assembly actual component characteristic output data to said selected nominal data and to provide an indication signal as to whether said sensor assembly output data is acceptable when compared to the selected nominal data. The output assembly includes a communication assembly and an output device.

US Patent:

20170047174, Feb 16, 2017

Filed:

Aug 13, 2015

Appl. No.:

14/825207

Inventors:

- Cleveland OH, US
Li Yu - Pittsburgh PA, US
Fangji Wu - Shanghai, CN
Kaixuan Zhang - Shanghai, CN
Xinyu Liang - Shanghai, CN

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

H01H 3/38
G01R 31/327
H01H 3/42
H01H 9/54
H01H 5/10
H01H 3/26

Abstract:

A component monitoring system structured to monitor circuit breaker assembly operating mechanism component characteristics is provided. The component monitoring system includes a record assembly, at least one sensor assembly and a comparison assembly. The record assembly includes selected nominal data for a selected circuit breaker component. The least one sensor assembly is structured to measure a number of actual component characteristics of a selected circuit breaker component and to transmit actual component characteristic output data. The comparison assembly is structured to compare the sensor assembly actual component characteristic output data to the selected nominal data and to provide an indication of whether the sensor assembly output data is acceptable when compared to the selected nominal data. The at least one sensor assembly is in electronic communication with the comparison assembly.

US Patent:

20170047181, Feb 16, 2017

Filed:

Dec 10, 2015

Appl. No.:

14/964946

Inventors:

- Cleveland OH, US
Jiong Chen - Shanghai, CN
Mark Mao - Shanghai, CN
Wenjie Hou - Shanghai, CN
Li Yu - Pittsburgh PA, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

H01H 47/00
G01R 31/327

Abstract:

A component monitoring system structured to monitor circuit breaker assembly component characteristics is provided. The component monitoring system includes a record assembly, a number of impulse sensor assemblies, a comparison assembly, and an output assembly. The record assembly includes selected nominal data for a selected circuit breaker component. The impulse sensor assemblies are structured to measure a number of actual component characteristics for a substantial portion of the circuit breaker assembly and to transmit actual component characteristic output data. The comparison assembly is structured to receive an electronic signal from the record assembly and the impulse sensor assemblies, to compare each impulse sensor assembly actual component characteristic output data to the selected nominal data and to provide an indication signal as to whether the impulse sensor assembly output data is acceptable when compared to the selected nominal data. The output assembly includes a communication assembly and an output device.