Patents by Inventor Otto A. Shander

Otto A. Shander 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).

  • Railway bolster lug
    Patent number: 4135833
    Abstract: Bolster re-enforcement systems, applicable both to new and existing bolster designs, provide for pre-stressing the bottom bolster center plate region utilizing lugs transmitting tension forces in opposition to the stress pattern applied to the center region of the bolster as the result of vertical loading associated with normal operating conditions.
    Type: Grant
    Filed: December 4, 1975
    Date of Patent: January 23, 1979
    Assignee: R. W. Mac Company
    Inventors: Robert W. MacDonnell, Otto A. Shander
  • Constant contact side bearing
    Patent number: 3981548
    Abstract: Constant contact side bearings include a base presenting supports for cushions that are engaged by a top follower. In its pre-load position, rollers disposed on the top follower are urged into constant contact with a car body to control truck hunting. The cushions accommodate additional travel of the top follower to provide substantially higher load resistance for control of lateral car body roll resistance.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: September 21, 1976
    Assignee: R. W. Mac Company
    Inventors: Robert W. MacDonnell, Otto A. Shander