The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2012
Filed:
Mar. 30, 2007
Fuxiang HU, Tokyo-To, JP;
Tadashi Tokai, Yokohama, JP;
Daisuke Shiode, Tokyo-To, JP;
Yoshioki Ozeki, Yokohma, JP;
Hiroshi Kubota, Yokohama, JP;
Fuxiang Hu, Tokyo-To, JP;
Tadashi Tokai, Yokohama, JP;
Daisuke Shiode, Tokyo-To, JP;
Yoshioki Ozeki, Yokohma, JP;
Hiroshi Kubota, Yokohama, JP;
Abstract
A net-mouth inclined trawl-net apparatus includes a substantially rectangular frame and a trawl net attached to the frame. The trawl net is formed of an upper net, a lower net, and a pair of side nets, and the trawl net has a shape formed of a body part of a quadrangular trapezoid shape. Each of the side nets attached to the frame has a longer side and a shorter side as an upper side and a lower side, and a side of each side net defining a net-mouth edge defines a side-net front edge inclination angle relative to a bottom side of an isosceles trapezoid having the shorter side of the side net as a side of the isosceles trapezoid, so that the frame autonomously maintains an inclination angle relative to the vertical axis due to a flow resistance and a lift acting on the net.