Patents by Inventor Keith Sanfrey

Keith Sanfrey 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).

  • One-piece sheet-metal structure formed with clench locked corners
    Patent number: 11181279
    Abstract: A one-piece sheet-metal structure includes a first wall, a second wall perpendicularly extending from the first wall, and a third wall perpendicularly extending from the first wall. The second wall is perpendicular to the first wall and the third wall. An end edge of the second wall is adjacent an end edge of the third wall to form a corner. The corner is provided with a clench lock so that the corner is weld-free. The clench lock includes bottom and top tabs. The bottom tab perpendicularly extends from the end edge of the second wall at a bottom tab bend and engages an inner side of the third wall. The top tab perpendicularly extends from an outer edge of the third wall at a top tab bend and bends around the bottom tab and engages an inner side of the bottom tab to clench the bottom tab at the corner.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: November 23, 2021
    Assignee: Pennant Moldings, Inc.
    Inventors: Keith Sanfrey, John S. Meyer
  • One-Piece Sheet-Metal Structure Formed With Clench Locked Corners
    Publication number: 20190086099
    Abstract: A one-piece sheet-metal structure includes a first wall, a second wall perpendicularly extending from the first wall, and a third wall perpendicularly extending from the first wall. The second wall is perpendicular to the first wall and the third wall. An end edge of the second wall is adjacent an end edge of the third wall to form a corner. The corner is provided with a clench lock so that the corner is weld-free. The clench lock includes bottom and top tabs. The bottom tab perpendicularly extends from the end edge of the second wall at a bottom tab bend and engages an inner side of the third wall. The top tab perpendicularly extends from an outer edge of the third wall at a top tab bend and bends around the bottom tab and engages an inner side of the bottom tab to clench the bottom tab at the corner.
    Type: Application
    Filed: November 19, 2018
    Publication date: March 21, 2019
    Applicant: Penant Moldings Inc.
    Inventors: Keith Sanfrey, John S. Meyer
  • One-piece sheet-metal structure formed with clench locked corners
    Patent number: 10208961
    Abstract: A one-piece sheet-metal structure includes a first wall, a second wall perpendicularly extending from the first wall, and a third wall perpendicularly extending from the first wall. The second wall is perpendicular to the first wall and the third wall. An end edge of the second wall is adjacent an end edge of the third wall to form a corner. The corner is provided with a clench lock so that the corner is weld-free. The clench lock includes bottom and top tabs. The bottom tab perpendicularly extends from the end edge of the second wall at a bottom tab bend and engages an inner side of the third wall. The top tab perpendicularly extends from an outer edge of the third wall at a top tab bend and bends around the bottom tab and engages an inner side of the bottom tab to clench the bottom tab at the corner.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: February 19, 2019
    Assignee: Pennant Moldings, Inc.
    Inventors: Keith Sanfrey, John S. Meyer
  • One-Piece Sheet-Metal Structure Formed With Clench Locked Corners
    Publication number: 20170016625
    Abstract: A one-piece sheet-metal structure includes a first wall, a second wall perpendicularly extending from the first wall, and a third wall perpendicularly extending from the first wall. The second wall is perpendicular to the first wall and the third wall. An end edge of the second wall is adjacent an end edge of the third wall to form a corner. The corner is provided with a clench lock so that the corner is weld-free. The clench lock includes bottom and top tabs. The bottom tab perpendicularly extends from the end edge of the second wall at a bottom tab bend and engages an inner side of the third wall. The top tab perpendicularly extends from an outer edge of the third wall at a top tab bend and bends around the bottom tab and engages an inner side of the bottom tab to clench the bottom tab at the corner.
    Type: Application
    Filed: July 16, 2015
    Publication date: January 19, 2017
    Inventors: Keith Sanfrey, John S. Meyer