Mobile fish net buoy top
US4724631A · kind A · utility
Inventor
Key dates
| Filing date | Dec 29, 1986 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Dec 29, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K97/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A movable fish net buoy top, having the framework of a buoy top in association with a grid port which can be drawn up by 105 degrees, and pushed down by 75 degrees, so structured that as the top is laid on the surface of water the grid port on either side thereof will, owing to water buoyancy, be pushed up in bearing against a mortise joint catch furnished on top of the strut. When the buoy top is taken off the water surface, a mortise joint catch furnished at the bottom of the strut is deflected by 90 degrees, so as to prevent the grid port from moving downward toward either side due to gravitation, thereby preventing it from opening. To pour out the catch entrapped in the fish net, the mortise joint on top of the buoy top is turned to a setting in parallel with the surface level of the framework, and reverse the framework of the buoy top, so as to bring the grid port to open downwards along either side, so that the catch can be poured out, conveniently and effectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.