Patents by Inventor Donald B. Shank

Donald B. Shank 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).

  • Air brake pilot adaptor
    Patent number: 5613741
    Abstract: A pilot mechanism for improving operation of various functions of the pneumatic brake of a train. The mechanism includes solenoid valves, controllable by either a radio/battery mode of operation or a train wire system mode of operation. The solenoid valves can be interposed in various passages in fluid communication with passages of a conventional ABD control valve, as modified to enable operation of the invention, to permit substantially immediate venting of air in those passages to atmosphere.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: March 25, 1997
    Inventor: Donald B. Shank
  • Air brake pilot adaptor
    Patent number: 5390988
    Abstract: A pilot mechanism for improving operation of various functions of the pneumatic brake of a train. The mechanism includes solenoid valves, controllable by either a radio/battery mode of operation or a train wire system mode of operation. The solenoid valves can be interposed in various passages in fluid communication with passages of a conventional ABD control valve, as modified to enable operation of the invention, to permit substantially immediate venting of air in those passages to atmosphere.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: February 21, 1995
    Assignee: Duluth & Iron Range Co., Inc.
    Inventor: Donald B. Shank