Patents Assigned to Hakodate Seimo Sengu Co., Ltd.
  • Fishing net
    Patent number: 4226165
    Abstract: A fishing net and a method for making the same. The net of the invention has a plurality of improved knots, each of which knots has four leg strings extending separately in four directions and one or both of the loops of warp and weft overlie each crotch formed of a pair of adjoining leg strings. Further, the knots are easily formed and tightened but hardly loosened or worn so that a well-ordered diamond pattern of the net is always formed when the net is spread.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: October 7, 1980
    Assignee: Hakodate Seimo Sengu Co., Ltd.
    Inventors: Jiro Maruyama, Seiji Suzuki
  • Method for making knot for fishing net
    Patent number: 4139225
    Abstract: A fishing net and a method for making the same. The net of the invention has a plurality of improved knots, each of which knots has four leg strings extending separately in four directions and one or both of the loops of warp and weft overlie each crotch formed of a pair of adjoining leg strings. Further, the knots are easily formed and tightened but hardly loosened or worn so that a well-ordered diamond pattern of the net is always formed when the net is spread.
    Type: Grant
    Filed: December 21, 1976
    Date of Patent: February 13, 1979
    Assignee: Hakodate Seimo Sengu Co., Ltd.
    Inventors: Jiro Maruyama, Seiji Suzuki
  • Knotted fishing net
    Patent number: 4047316
    Abstract: A knotted fishing net wherein the knot is formed of a warp and a weft, said warp being wound at least one more time about the weft than in the prior art double knot; and the feed portion of the warp alternately passes over and below the return portion thereof at adjacent intersections except for the outermost intersection of both feed and return portions of the warp on the outlet side of a knot on which the return portion of the warp is drawn outward.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: September 13, 1977
    Assignee: Hakodate Seimo Sengu Co., Ltd.
    Inventor: Jiro Maruyama