Patents Assigned to John R. Nickel
  • Flexible surfboard fin
    Patent number: 5480331
    Abstract: A flexible fin for surfboards, sailboards and other watercraft comprises a thin core sheet made of laminated fiberglass sandwiched between two slabs of closed-cell polyurethane foam. The flexible fin provides for sharper turns while increasing the buoyancy of the craft.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: January 2, 1996
    Assignee: John R. Nickel
    Inventor: Tommy R. Lewis