Trawl arrangements专利检索-曳力装置钓鱼与渔业专利检索查询-专利查询网

Trawl arrangements

阅读：82发布：2022-09-01

专利汇可以提供Trawl arrangements专利检索，专利查询，专利分析的服务。并且Trawl arrangement having an adjustable trawl bag volume comprising a trawl bag with connecting means each connected to one or more mesh members thereof. The connecting means have a tensile strength less than the tensile strength of said mesh members and are adapted to extend axially of the trawl bag while contracting together said trawl bag in an axial direction to form one or more axially double-layered annular folds. A breakproducing portion of each connecting means has said tensile strength preselected according to the object of use, each end of said portion having a fastening portion designed for reception of mesh formations arranged directly opposite each other in the trawl bag folding. The connecting means are adapted to be fastened into the trawl bag independently of each other for absorbing their respective proportion of the axially directed tensile force therethrough.，下面是Trawl arrangements专利的具体信息内容。

权利要求

1. Trawl arrangement having an adjustable trawl bag volume which comprises a trawl bag, connecting means each connected to one or more mesh members of said trawl bag and having a tensile strength less than the tensile strength of said mesh members, said connecting means contracting together said trawl bag in an axial direction to form one or more axially doublelayered annular folds and being adapted to extend axially of said trawl bag, a breakproducing portion of said connecting means having said tensile strength preselected according to the object of use, and a fastening portion at each end thereof designed for reception of mesh formations arranged directly opposite each other in the trawl bag folding, said connecting means being adapted to be fastened into the trawl bag independently of each other for absorbing their respective proportion of the axially directed tensile force therethrough.

2. The arrangement in accordance with claim 1, wherein the connecting means comprises two separate fastening elements which are adapted to be permanently connected to the trawl bag at preselected locations in the latter and which are connected to each other by means of a replaceable element containing the break-producing portion.

3. The arrangement according to claim 2, wherein said fastening elements are key rings and said replaceable element has a loop portion at each end engaging a respective key ring, said loop portions being joined by an intermediate bar portion constituting said break-producing portion.

4. The arrangement in accordance with claim 1, wherein the connecting means comprises an approximately C-shaped hoop member the back portion of which is provided just opposite the legs of the C-shape with said break-producing portion, said legs of the C-shape being adapted to be forced outwardly from each other in a direction transversely of the main plane of the C-shape in order to permit threading on of the trawl bag meshes.

5. The arrangement in accordance with claim 4, wherein the legs of the C-shape are thrust tightly together flush with each other.

6. The arrangement in accordance with claim 4, wherein said back portion of the C-shape has an approximately circular cross-section, said legs of the C-shape and transition portions between said bag portion and said legs having substantially larger cross-sectional dimensions reckoned in the main plane of the C-shape than in a direction at right angles to said plane.

7. The arrangement in accordance with claim 4, wherein said break-producing portion is provided with a smaller cross-sectional area than the remainder of said back portion.

8. The arrangement in accordance with claim 4, wherein the break-producing portion is arranged flush with the points of engagement of said hoop member with the meshes of the trawl bag, said hoop member having in plan an approximately kidney-shaped cOntour with said break-producing portion disposed at the concave arc of said kidney shape.

9. The arrangement in accordance with claim 2, wherein said replaceable element is an approximately C-shaped hoop member the back portion of which is provided just opposite the legs of the C-shape with said break-producing portion, said legs of the C-shape being adapted to be forced outwardly from each other in a direction transversely of the main plane of the C-shape in order to permit threading on of said fastening elements.

10. The arrangement in accordance with claim 9, wherein the legs of the C-shape are thrust tightly together flush with each other.

11. The arrangement in accordance with claim 9, wherein said back portion of the C-shape has an approximately circular cross-section, said legs of the C-shape and transition portions between said back portion and said legs having substantially larger cross-sectional dimensions reckoned in the main plane of the C-shape than in a direction at right angles to said plane.

12. The arrangement in accordance wit claim 9, wherein said break-producing portion is provided with a smaller cross-sectional area than the remainder of said back portion.

13. The arrangement in accordance with claim 9, wherein the break-producing portion is arranged flush with the points of engagement of said hoop member with said fastening elements, said hoop member having in plan an approximately kidney-shaped contour with said break-producing portion disposed at the concave arc of said kidney shape.

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