Patents by Inventor Marlin E. Clark

Marlin E. Clark 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: 10189488
    Abstract: A draft gear assembly for use with railcars having coupler members is provided. The draft gear assembly has front and back ends and comprises a yoke, a coupler follower, a front resilient member, an intermediate stop member, and a back resilient member. The yoke has a back wall, a top wall extending from the back wall toward the front end of the draft gear assembly, and a bottom wall extending from the back wall toward the front end of the draft gear assembly. The coupler follower is positioned between the butt end of the coupler shank and the front end of the draft gear assembly. The front resilient member is positioned between the coupler follower and the intermediate stop member. The back resilient member is positioned between the intermediate stop member and the yoke back wall. The front and back resilient members are compressible.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: January 29, 2019
    Assignee: AMSTED RAIL COMPANY, INC.
    Inventor: Marlin E. Clark
  • Publication number: 20180065649
    Abstract: A draft gear assembly for use with railcars having coupler members is provided. The draft gear assembly has front and back ends and comprises a yoke, a coupler follower, a front resilient member, an intermediate stop member, and a back resilient member. The yoke has a back wall, a top wall extending from the back wall toward the front end of the draft gear assembly, and a bottom wall extending from the back wall toward the front end of the draft gear assembly. The coupler follower is positioned between the butt end of the coupler shank and the front end of the draft gear assembly. The front resilient member is positioned between the coupler follower and the intermediate stop member. The back resilient member is positioned between the intermediate stop member and the yoke back wall. The front and back resilient members are compressible.
    Type: Application
    Filed: September 2, 2016
    Publication date: March 8, 2018
    Inventor: Marlin E. Clark
  • Patent number: 6681943
    Abstract: A draft gear assembly is disclosed alone and in combination with a draft sill and a coupler. The draft sill has front and rear stops defining a draft gear pocket. The draft gear assembly has a yoke, a coupler follower, a rear follower, a front resilient member and a back resilient member. The yoke has top and bottom stops. The coupler follower is biased against the yoke top and bottom stops. The draft gear assembly also includes a center rod that extends through the yoke, through the back resilient member and through the rear follower. Prior to installation on a railcar, there is a shortening member on the center rod. The length of the assembly between the shortening member and the front of the coupler follower is slightly less than the longitudinal length of the draft gear pocket. After installation, the rear follower is positioned against rear stops of the draft sill. After installation, the yoke, coupler and coupler follower each have a neutral position and a full buff position.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: January 27, 2004
    Assignee: Amsted Industries Incorporated
    Inventors: Ronald E. Barker, Charles E. Burkhart, Marlin E. Clark, John F. Deppen, V. Terrey Hawthorne, Horst T. Kaufhold, Jay P. Monaco, Julius I. Pershwitz, John J. Steffen
  • Patent number: 6446820
    Abstract: A draft gear assembly is disclosed alone and in combination with a draft sill and a coupler. The draft sill has front and rear stops defining a draft gear pocket. The draft gear assembly has a yoke, a coupler follower, a rear follower, a front resilient member and a back resilient member. The yoke has top and bottom stops. The coupler follower is biased against the yoke top and bottom stops. The draft gear assembly also includes a center rod that extends through the yoke, through the back resilient member and through the rear follower. Prior to installation on a railcar, there is a shortening member on the center rod. The length of the assembly between the shortening member and the front of the coupler follower is slightly less than the longitudinal length of the draft gear pocket. After installation, the rear follower is positioned against rear stops of the draft sill. After installation, the yoke, coupler and coupler follower each have a neutral position and a full buff position.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: September 10, 2002
    Assignee: AMSTED Industries Incorporated
    Inventors: Ronald E. Barker, Charles E. Burkhart, Marlin E. Clark, John F. Deppen, V. Terrey Hawthorne, Horst T. Kaufhold, Jay P. Monaco, Julius I. Pershwitz, John J. Steffen
  • Publication number: 20020070189
    Abstract: A draft gear assembly is disclosed alone and in combination with a draft sill and a coupler. The draft sill has front and rear stops defining a draft gear pocket. The draft gear assembly has a yoke, a coupler follower, a rear follower, a front resilient member and a back resilient member. The yoke has top and bottom stops. The coupler follower is biased against the yoke top and bottom stops. The draft gear assembly also includes a center rod that extends through the yoke, through the back resilient member and through the rear follower. Prior to installation on a railcar, there is a shortening member on the center rod. The length of the assembly between the shortening member and the front of the coupler follower is slightly less than the longitudinal length of the draft gear pocket. After installation, the rear follower is positioned against rear stops of the draft sill. After installation, the yoke, coupler and coupler follower each have a neutral position and a full buff position.
    Type: Application
    Filed: January 29, 2002
    Publication date: June 13, 2002
    Inventors: Ronald E. Barker, Charles E. Burkhart, Marlin E. Clark, John F. Deppen, V. Terrey Hawthorne, Horst T. Kaufhold, Jay P. Monaco, Julius I. Pershwitz, John J. Steffen
  • Patent number: 5598937
    Abstract: A slackless drawbar assembly joining railcars includes a drawbar, each end of the drawbar being joined to a yoke surrounding a cushioning unit and a follower block confined between forward and rear stops in a conventional sill pocket. The cushioning unit includes a front plate, an elongate spacer block and a compressed stack of elastomer pads sandwiched between the plate and block. Tightening wedges and shims are not used. The compressed pad stock holds the cushioning unit between the stops with a preload of about 50,000 pounds to prevent binding between the drawbar and the follower plate from causing derailments. The preload also holds the cushioning unit tight in the pocket.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: February 4, 1997
    Assignee: Keystone Industries, Inc.
    Inventor: Marlin E. Clark