US 12,433,269 B2
Gate mechanism for a trawl net
Paul G. Fernandes, Aberdeen (GB); Vivek Chacko, Aberdeen (GB); Richard David Neilson, Aberdeenshire (GB); and Ahmed Elsayed Nassar, Leeds (GB)
Assigned to Fisheries Innovation & Sustainability, Perthshire (GB)
Appl. No. 18/036,076
Filed by Fisheries Innovation & Sustainability, Perthshire (GB)
PCT Filed Nov. 9, 2021, PCT No. PCT/GB2021/052897
§ 371(c)(1), (2) Date May 9, 2023,
PCT Pub. No. WO2022/096903, PCT Pub. Date May 12, 2022.
Claims priority of application No. 2017670 (GB), filed on Nov. 9, 2020.
Prior Publication US 2023/0397584 A1, Dec. 14, 2023
Int. Cl. A01K 73/02 (2006.01); A01K 73/10 (2006.01)
CPC A01K 73/063 (2022.02) [A01K 73/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A gate mechanism adapted for mounting within the extension of a trawl net, for selectively preventing animals or marine life including fish or other species from entering the cod end of the trawl net based upon selected criteria such as species or size, the gate mechanism comprising
a housing and
a barrier mounted within the housing,
the barrier having open and closed sections,
a rotatable door mounted within the housing,
the door having open and closed sections which selectively overlie the open and closed sections of the barrier, and
a turbine for facilitating rotation of the door as the gate mechanism is dragged through the water within the trawl net.