FIELD: engineering.
SUBSTANCE: opening apparatus includes upper, intermediate and lower frames, at least two upper panels between the upper and intermediate frames, at least two lower panels between the intermediate and lower frames. One of the upper panels and one of the lower panels are adjustable by the angle of attack relative to the other panels. In order to adjust the angle of attack of the adjustable panels, manual means are provided on at least one of the frames, equipped with sets of holes aligned at different angles and capable of accommodating pins for locking the adjustment position.
EFFECT: invention allows for a change in the angle of attack of the opening apparatus.
9 cl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TRAWL DOOR OR PARAVANE WITH REMOTE CONTROL ADJUSTMENT | 2012 |
|
RU2599160C2 |
| TRAWL BOARD WITH AERODYNAMIC PROFILE | 2016 |
|
RU2727058C2 |
| DEVICE FOR ATTACHMENT OF TOWING CABLE TO OPENING DEVICE | 2017 |
|
RU2727902C2 |
| LIGHT MOLD OTTER TRAWL FOR HIGH-RATE TRAWLING THAT FEATURES HIGH HYDRODYNAMIC EFFICIENCY, METHODS OF ITS PRODUCTION AND APPLICATION | 2005 |
|
RU2346433C2 |
| CONSTRUCTION OF ALLOPELAGIC TRAWL BOARD OF IMPROVED EFFICIENCY, OBTAINED USING MATERIALS AND METHODS OF UNIVERSAL ACCESSIBILITY | 2005 |
|
RU2501214C2 |
| OTTER BOARD | 1997 |
|
RU2181001C2 |
| OTTER BOARD (VERSIONS) | 2004 |
|
RU2292713C2 |
| TRAWL BOARD | 2019 |
|
RU2777736C2 |
| FINISHING BOAT FOR NORTHERN SEAS | 2012 |
|
RU2535382C2 |
