Patents by Inventor Robert N. Hansen

Robert N. Hansen 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).

  • Coupling guard
    Patent number: 4291893
    Abstract: A base is secured to a mounting member extending from a towing vehicle and having an upstanding ball element. A retention member carried by the base is selectively movable to a position over a socket element which extends from a towed vehicle and which is detachably engaged downwardly over the ball element. The retention member limits the upward travel of the socket element and maintains engagement of the coupling. The retention member is held in position by lock means. A resilient member is disposed between the base and the retention member to prevent the retention member from rattling against the base.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: September 29, 1981
    Assignees: William M. Campbell, Norma J. Campbell, Wesley Bogdan, Robert Clements, William Krone, Keith Krone, Thomas Kovacic, Arloa Stickel, Walter C. Aurea
    Inventor: Robert N. Hansen
  • Ball component for coupling apparatus
    Patent number: 4230336
    Abstract: An attachment bolt extends upwardly through a support member and threadedly engages the ball component of a coupling apparatus. A locking member extends downwardly through the ball component and cammingly engages the attachment bolt with the pitch different than the threaded engagement between the ball component and the attachment bolt. Engagement of the ball component within a complemental coupler component prevents access to and removal of the locking member.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: October 28, 1980
    Inventors: Walter C. Avrea, Robert N. Hansen
  • Coupling guard
    Patent number: 4208065
    Abstract: A base is secured to a mounting member extending from a towing vehicle and having an upstanding ball element. A retention member carried by the base is selectively movable to a position over a socket element which extends from a towed vehicle and which is detachably engaged downwardly over the ball element. The retention member limits the upward travel of the socket element and maintains engagement of the coupling. The retention member is held in position by lock means. A resilient member is disposed between the base and the retention member to prevent the retention member from rattling against the base.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: June 17, 1980
    Assignees: Walter C. Avrea, Ben Martin, Thomas Kovacic
    Inventor: Robert N. Hansen