FIELD: building, particularly acoustic protection devices used in window units.
SUBSTANCE: acoustic protection device comprises hollow body with orifices and valve arranged in the body. The valve is provided with drive for valve displacement. The valve comprises at least two orifices arranged from each valve side. Device has at least one valve pair with common drive made as differential mechanism including support secured to the body, control shaft arranged in support groove to provide control shaft rotation and movement along the groove and double-armed lever. The double-armed lever has ends connected to corresponding valves through ties and hinges so that the valves may be moved into the body towards above orifices to seal vent channels made in window leaf sides.
EFFECT: increased heat and noise insulation and improved transparency.
3 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WINDOW TRANSOM CONTROL GEAR (VERSIONS) | 2007 |
|
RU2347054C1 |
| VENTILATION ANTINOISE DEVICE | 2001 |
|
RU2183720C1 |
| VENTILATION NOISE-SUPPRESSING DEVICE | 2000 |
|
RU2189426C2 |
| FRENCH CASEMENT WINDOW WITH TRANSOM | 2023 |
|
RU2807005C1 |
| HINGED WINDOW | 2023 |
|
RU2812515C1 |
| WINDOW WITH VENTING DEVICE | 2002 |
|
RU2222680C2 |
| TRANSOM AUTONOMOUS VENTILATION APPARATUS | 2021 |
|
RU2779702C1 |
| ENERGY SAVING WINDOW WITH AIR EXCHANGE RECOVERY | 2022 |
|
RU2787510C1 |
| HEAT-AND-SOUND INSULATING WINDOW WITH AIR CHANGE VALVE | 2000 |
|
RU2170802C1 |
| FLAP TURN LIMITER | 2014 |
|
RU2551734C1 |
