Patents by Inventor Paul F. Larsen

Paul F. Larsen 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).

  • Patent number: 4170275
    Abstract: A pneumatic ear cushion for a headphone or ear defender is formed from two sheets of vinyl plastic. One sheet is molded to form concentric inner and outer walls about a central opening and a connecting sealing wall which is shaped to form a cavity that receives the user's ear. The second sheet of vinyl plastic forms a back wall to which an adhesive is attached for mounting the cushion to a headphone cup.
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: October 9, 1979
    Assignee: Koss Corporation
    Inventor: Paul F. Larsen
  • Patent number: 4016671
    Abstract: A fishing lure has an elongated shaft with a loop at one end to connect a fishhook and a loop at the other for securing a line. Axially received on the shaft is a cylindrical body and a swivel ball on the side of the body toward the line-coupling loop. A generally spoon-shaped blade has an aperture located near its head end portion and the shaft is received within the aperture to position the blade between the swivel ball and the line coupling with the cavity of the spoon facing the shaft. The head end portion of the blade is scoop shaped, in reverse, of the spoon shape of the blade. That scoop causes the tail end portion of the blade to tilt outwardly from the shaft when the lure is drawn forwardly through water. The tail end portion of the blade includes a region which is bent or flared outwardly from the shaft in one side of the tail portion, defining a crease oriented at a slant to the longitudinal axis of the blade.
    Type: Grant
    Filed: December 18, 1975
    Date of Patent: April 12, 1977
    Inventor: Paul F. Larsen