Patents by Inventor Leo A. Baum

Leo A. Baum 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).

  • Hoisting apparatus
    Patent number: 4834341
    Abstract: A hoisting means comprises a rotary member for winding on or interlockingly guiding weight suspension means like a cable, a chain or similar means, drive means for the rotary member, first brake means for indirectly inducing a braking action onto the rotary member for suppressing a movement of the rotary member in the winding-off direction under influence of the load, and further comprises second brake means directly acting upon the rotary member.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: May 30, 1989
    Assignee: Putzer-Defries Winden- und Hebetechnik GmbH
    Inventor: Leo A. Baum
  • Drum of a winch
    Patent number: 4753399
    Abstract: A winch drum is assembled from parts which are preferably joined by welding and comprises a first flanged-coupling pulley having a pivot, a tube disposed in between first flanged-coupling pulley and a second flanged-coupling pulley, and a connecting disc attached to the tube adjacent to second flanged-coupling pulley.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: June 28, 1988
    Assignee: Putzer-Defries Winden-und Hebetechnik GmbH
    Inventor: Leo A. Baum