Patents by Inventor Hans Hellgren

Hans Hellgren 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).

  • Saw arrangement having plural operator stations
    Patent number: 4280382
    Abstract: A trimming saw arrangement comprises a root-cutting station, a trimming station, and a feed line for advancing timber, perpendicular to its longitudinal direction, through the stations and to a sorting station having a sorting conveyor. The stations include a plurality of cutting or trimming places arranged one after the other in the feed direction and a distribution flap and conveyor for distributing arriving timber to the respective places responsive to the amount of timber accumulated in a storage bin associated with each cutting or trimming place.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: July 28, 1981
    Assignee: Renholmens Mekaniska Verkstad AB
    Inventors: Hans Hellgren, Erland Marklund