Patents by Inventor Nathan T. Sigman

Nathan T. Sigman 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).

  • Method of providing arc-resistant dry type transformer enclosure
    Patent number: 9214271
    Abstract: Arc resistant enclosures for dry-type transformers. More particularly, transformer enclosures having one or more arc-resistant features, including arc channels, arc fault dampers, and arc fault plenums, and methods for providing same.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: December 15, 2015
    Assignee: ABB Inc.
    Inventors: Robert C. Ballard, Nathan T. Sigman, Edgar A. Wimmer, Jr., Rafael Gutierrez, Jr.
  • Arc-resistant dry type transformer enclosure having arc fault damper apparatus
    Patent number: 8492662
    Abstract: Arc resistant enclosures for dry-type transformers. More particularly, transformer enclosures having one or more arc-resistant features, including arc channels, arc fault dampers, and arc fault plenums, and methods for providing same.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: July 23, 2013
    Assignee: ABB Inc.
    Inventors: Robert C. Ballard, Nathan T. Sigman, Edgar A. Wimmer, Jr., Rafael Gutierrez, Jr.
  • Arc-resistant dry type transformer enclosure having arc channels
    Patent number: 8456838
    Abstract: Arc resistant enclosures for dry-type transformers. More particularly, transformer enclosures having one or more arc-resistant features, including arc channels, arc fault dampers, and arc fault plenums, and methods for providing same.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: June 4, 2013
    Assignee: ABB Inc.
    Inventors: Robert C. Ballard, Nathan T. Sigman, Edgar A. Wimmer, Jr., Rafael Gutierrez, Jr.
  • Method of providing arc-resistant dry type transformer enclosure
    Patent number: 8375566
    Abstract: Methods of providing arc resistant switchgear enclosures for dry-type transformers are provided. The enclosures have one or more arc-resistant features, including arc channels, arc fault dampers, and arc fault plenums. In a preferred embodiment, the method comprises providing a base structure with a dry-type transformer seated thereon, providing walls and a roof, wherein at least the front wall contains at least one longitudinal seam covered by an arc channel.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: February 19, 2013
    Assignee: ABB Inc.
    Inventors: Robert C. Ballard, Nathan T. Sigman, Edgar A. Wimmer, Jr., Rafael Gutierrez, Jr.
  • ARC-RESISTANT DRY TYPE TRANSFORMER ENCLOSURE HAVING ARC CHANNELS
    Publication number: 20120218067
    Abstract: Arc resistant enclosures for dry-type transformers. More particularly, transformer enclosures having one or more arc-resistant features, including arc channels, arc fault dampers, and arc fault plenums, and methods for providing same.
    Type: Application
    Filed: February 28, 2011
    Publication date: August 30, 2012
    Applicant: ABB Inc.
    Inventors: Robert C. Ballard, Nathan T. Sigman, Edgar A. Wimmer, JR., Rafael Gutierrez, JR.
  • ARC-RESISTANT DRY TYPE TRANSFORMER ENCLOSURE HAVING ARC FAULT DAMPER APPARATUS
    Publication number: 20120217053
    Abstract: Arc resistant enclosures for dry-type transformers. More particularly, transformer enclosures having one or more arc-resistant features, including arc channels, arc fault dampers, and arc fault plenums, and methods for providing same.
    Type: Application
    Filed: February 28, 2011
    Publication date: August 30, 2012
    Applicant: ABB Inc.
    Inventors: Robert C. Ballard, Nathan T. Sigman, Edgar A. Wimmer, JR., Rafael Gutierrez, JR.
  • METHOD OF PROVIDING ARC-RESISTANT DRY TYPE TRANSFORMER ENCLOSURE
    Publication number: 20120216393
    Abstract: Arc resistant enclosures for dry-type transformers. More particularly, transformer enclosures having one or more arc-resistant features, including arc channels, arc fault dampers, and arc fault plenums, and methods for providing same.
    Type: Application
    Filed: February 28, 2011
    Publication date: August 30, 2012
    Applicant: ABB Inc.
    Inventors: Robert C. Ballard, Nathan T. Sigman, Edgar A. Wimmer, JR., Rafael Gutierrez, JR.