Patents by Inventor Douglas A. Sowder

Douglas A. Sowder 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).

  • Biased sheave frame for aerial tram
    Patent number: 4329926
    Abstract: A compound frame to support a plurality of sheaves on a tower of an aerial tram with a predetermined bias between each sheave and a supported transiting cable. The sheaves are supported in paired opposed groups with each sheave of a group in substantial opposition so that the bias of each group of sheaves provides a safety factor to aid in maintaining a transiting cable therebetween. The manner of biasing paired sheave groups requires minimal forces for greater economy. An associated desheavement annunciating system is disclosed.
    Type: Grant
    Filed: May 13, 1980
    Date of Patent: May 18, 1982
    Inventors: Tony R. Sowder, Douglas A. Sowder