Cuong T Ha

US Patent:

20090066469, Mar 12, 2009

Filed:

Sep 10, 2007

Appl. No.:

11/852851

Inventors:

Naeem Rahman - Bolingbrook IL, US
Anthony Czyz - Schaumburg IL, US
Cuong Ha - Chicago IL, US

International Classification:

H01H 85/04
H01H 85/02

US Classification:

337158, 337187

Abstract:

A fuse includes a fusible element and a body member encased within a heat-resistant housing. The fusible element is configured to open an electrical circuit coupled to a storage battery in response to an over-current in the electrical circuit. The housing is configured to contain an arc generated by the fusible element in response to the over-current and to shield the arc and the fusible element from ambient particles. Thus, the fuse is ignition protected. The body member includes an insulating material configured to interrupt the arc. The housing includes an opening configured to receive a terminal of the storage battery or a terminal of a mounting plate. An insulating material disposed about a first end of the mounting plate terminal is configured to electrically isolate the fuse and a power supply cable in the electrical circuit from the mounting plate terminal.

US Patent:

20230102517, Mar 30, 2023

Filed:

Sep 24, 2021

Appl. No.:

17/484887

Inventors:

- Lombard IL, US
Cuong Ha - Lincolnwood IL, US

International Classification:

H01H 37/52
H01H 71/08
H01H 85/02

Abstract:

A circuit breaker device includes a bimetallic overcurrent protection element which is configured to be placed in series with an integrated replaceable fuse. The replaceable fuse may be faster-acting than the bimetallic overcurrent protection element, and may be higher-rated than the bimetallic overcurrent protection element. The circuit breaker device may include an electrically isolated terminal stud having a height sufficient to retain the replaceable fuse thereon, the electrically isolated terminal stud not directly connected to the bimetallic overcurrent protection element, so that current can only flow through the bimetallic overcurrent protection element when a replaceable fuse comprising an intact fuse element is supported on the electrically isolated terminal stud.

US Patent:

20160240340, Aug 18, 2016

Filed:

Feb 17, 2016

Appl. No.:

15/046159

Inventors:

- Lombard IL, US
Cuong Ha - Lincolnwood IL, US
Robert Holmes - Summit Township MI, US
Ronald Prokup - Lake Barrington IL, US

International Classification:

H01H 61/06

Abstract:

An electric current responsive circuit breaker device includes a housing formed from electrically insulating material and the housing has an internal compartment and an open end. The circuit breaker further includes a thermostatic snap-action blade and first and second electrically conductive contacts such that the first contact has a stationary position disposed within the internal compartment and the second contact is disposed on the thermostatic snap-action blade. Further, the first and second contacts are coupled such that electric current flows through the contacts when the temperature of the thermostatic snap-action blade is below a threshold level, and the thermostatic snap-action blade bends to uncouple the second contact from the first contact when the temperature of the thermostatic snap-action blade is at or above the threshold level so that electric current does not flow through the first and second contacts after the first and second contacts are uncoupled. The circuit breaker device further includes a flexible gasket and a cover interconnectedly arranged with the open end of the housing such that the flexible gasket is arranged between the cover and the housing, and the gasket has a throughhole disposed on an interior portion thereof.

US Patent:

20160093451, Mar 31, 2016

Filed:

Sep 23, 2015

Appl. No.:

14/863040

Inventors:

- Lombard IL, US
Cuong Ha - Lincolnwood IL, US
Robert Holmes - Summit Township MI, US
Ronald Prokup - Lake Barrington IL, US

International Classification:

H01H 13/02

Abstract:

A lighted circuit breaker status indication device includes a light guide made of one of transparent and translucent material. At least one light source is configured to illuminate the light guide. The light source is coupled to a circuit breaker by at least one electrical contact. A status circuit path of the light circuit breaker status indication device is coupled to the circuit breaker and configured to provide power to the light source when the circuit breaker is both energized and open, and not to provide power to the light source when the circuit breaker is one of not energized and closed.