Patents by Inventor Thomas E. Hjort

Thomas E. Hjort has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8027134
    Abstract: According to one aspect of the invention, a plug-in module is provided for installation in a power distribution assembly. In one embodiment, the plug-in module includes a housing, an electrical isolation and overcurrent protection device located in the housing and a current sensing device located in the housing and adapted to sense a current carried by the electrical isolation and overcurrent protection device. The plug-in module may further include a power cable including a first end that is pre-terminated at the plug-in module to connect the power cable to the electrical isolation and overcurrent protection device, and electrical contacts adapted to removably couple the plug-in module to a plurality of stationary electrical conductors of the power distribution assembly. According to one embodiment, the electrical isolation and overcurrent protection device includes a circuit breaker.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: September 27, 2011
    Assignee: American Power Conversion Corporation
    Inventors: William Ziegler, Thomas E. Hjort, David A. Colucci
  • Publication number: 20090323258
    Abstract: According to one aspect of the invention, a plug-in module is provided for installation in a power distribution assembly. In one embodiment, the plug-in module includes a housing, an electrical isolation and overcurrent protection device located in the housing and a current sensing device located in the housing and adapted to sense a current carried by the electrical isolation and overcurrent protection device. The plug-in module may further include a power cable including a first end that is pre-terminated at the plug-in module to connect the power cable to the electrical isolation and overcurrent protection device, and electrical contacts adapted to removably couple the plug-in module to a plurality of stationary electrical conductors of the power distribution assembly. According to one embodiment, the electrical isolation and overcurrent protection device includes a circuit breaker.
    Type: Application
    Filed: September 10, 2009
    Publication date: December 31, 2009
    Applicant: AMERICAN POWER CONVERSION CORPORATION
    Inventors: William Ziegler, Thomas E. Hjort, David A. Colucci
  • Patent number: 7606014
    Abstract: According to one aspect of the invention, a plug-in module is provided for installation in a power distribution assembly. In one embodiment, the plug-in module includes a housing, an electrical isolation and overcurrent protection device located in the housing and a current sensing device located in the housing and adapted to sense a current carried by the electrical isolation and overcurrent protection device. The plug-in module may further include a power cable including a first end that is pre-terminated at the plug-in module to connect the power cable to the electrical isolation and overcurrent protection device, and electrical contacts adapted to removably couple the plug-in module to a plurality of stationary electrical conductors of the power distribution assembly. According to one embodiment, the electrical isolation and overcurrent protection device includes a circuit breaker.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: October 20, 2009
    Assignee: American Power Conversion Corporation
    Inventors: William Ziegler, Thomas E. Hjort, David A. Colucci
  • Patent number: 7456524
    Abstract: In one aspect, a polyphase power converter includes an input adapted to couple to a polyphase AC source, a positive DC output, and a negative DC output. The polyphase power converter also includes a first plurality of circuits and a second plurality of circuits. In one embodiment, each of the first plurality of circuits is adapted to receive a plurality of phases of the polyphase AC source and to produce a DC voltage at the positive DC output. Each of the second plurality of circuits is adapted to receive a plurality of phases of the AC source and to produce a DC voltage at the negative DC output. In one embodiment, the polyphase power converter includes a plurality of switching devices and each of the plurality of switching devices is adapted to isolate at least one phase of the polyphase AC source from at least one of the plurality of circuits.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: November 25, 2008
    Assignee: American Power Conversion Corporation
    Inventors: Henning Roar Nielsen, Thomas E. Hjort
  • Publication number: 20070291433
    Abstract: According to one aspect of the invention, a plug-in module is provided for installation in a power distribution assembly. In one embodiment, the plug-in module includes a housing, an electrical isolation and overcurrent protection device located in the housing and a current sensing device located in the housing and adapted to sense a current carried by the electrical isolation and overcurrent protection device. The plug-in module may further include a power cable including a first end that is pre-terminated at the plug-in module to connect the power cable to the electrical isolation and overcurrent protection device, and electrical contacts adapted to removably couple the plug-in module to a plurality of stationary electrical conductors of the power distribution assembly. According to one embodiment, the electrical isolation and overcurrent protection device includes a circuit breaker.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 20, 2007
    Applicant: American Power Conversion Corporation
    Inventors: William Ziegler, Thomas E. Hjort, David A. Colucci