Patents by Inventor Leroy Learn

Leroy Learn 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).

  • Safety system for a locomotive walkway
    Patent number: 7707945
    Abstract: A safety system for a walkway of a locomotive. The safety system includes an operator cabin adjacent to a front end of the locomotive, and a walkway extending from the operator cabin along a first side of the locomotive to facilitate a locomotive operator performing regular maintenance. More particularly, the safety system includes a resistive grid exhaust in a sidewall of the first side of the locomotive for directing hot air along a path from a resistive grid within the sidewall to external the locomotive during a self-load mode of the locomotive. A barrier bar is positioned adjacent to the base of the resistive grid exhaust, and is extendable to an extended position over the walkway during the self-load mode to prevent the operator from walking into the path of the hot air from the resistive grid exhaust.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: May 4, 2010
    Assignee: General Electric Company
    Inventors: Carl S. Iszkula, Leroy Learn, Soban Jalil
  • Safety System for a Locomotive Walkway
    Publication number: 20080105157
    Abstract: A safety system for a walkway of a locomotive. The safety system includes an operator cabin adjacent to a front end of the locomotive, and a walkway extending from the operator cabin along a first side of the locomotive to facilitate a locomotive operator performing regular maintenance. More particularly, the safety system includes a resistive grid exhaust in a sidewall of the first side of the locomotive for directing hot air along a path from a resistive grid within the sidewall to external the locomotive during a self-load mode of the locomotive. A barrier bar is positioned adjacent to the base of the resistive grid exhaust, and is extendable to an extended position over the walkway during the self-load mode to prevent the operator from walking into the path of the hot air from the resistive grid exhaust.
    Type: Application
    Filed: November 8, 2006
    Publication date: May 8, 2008
    Inventors: Carl S. Iszkula, Leroy Learn, Soban Jalil