Patents by Inventor Bjorn R. Bengtson

Bjorn R. Bengtson 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).

  • Vane for an arrow, and an arrow exhibiting vanes
    Patent number: 10563962
    Abstract: The present invention relates to fletching or vanes for arrows in archery and crossbow shooting, guiding the flight of the arrow through the air after the release, i.e. when the archer has released the arrow, and the arrow has left the string, and more particularly to a fletching or vane for quick stabilization of the flight of an arrow immediately after the release at instances of interference of the arrow with the bow, as well as an arrow fletched with such vanes.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: February 18, 2020
    Inventor: Bjorn R. Bengtson
  • A VANE FOR AN ARROW, AND AN ARROW EXHIBITING VANES
    Publication number: 20170122711
    Abstract: The present invention relates to fletching or vanes for arrows in archery and crossbow shooting, guiding the flight of the arrow through the air after the release, i.e. when the archer has released the arrow, and the arrow has left the string, and more particularly to a fletching or vane for quick stabilization of the flight of an arrow immediately after the release at instances of interference of the arrow with the bow, as well as an arrow fletched with such vanes.
    Type: Application
    Filed: June 15, 2015
    Publication date: May 4, 2017
    Inventor: Bjorn R. Bengtson
  • Fletching for stabilizing arrow flight
    Patent number: 4615552
    Abstract: A fletching for guiding and stabilizing the flight of an arrow. The fletching has an outer vane portion providing a turbulent flow of air over this outer portion and an inner vane portion providing a laminar flow of air over this inner portion at flight velocity. The height of the smooth inner vane portion provides a moment arm for transmitting the effects of outer vane portion turbulence to the arrow shaft.
    Type: Grant
    Filed: January 29, 1985
    Date of Patent: October 7, 1986
    Inventor: Bjorn R. Bengtson