| 摘要 |
1,146,655. Ventilation devices. SVENSKA FLAKTFABRIKEN A.B. 8 July, 1966 [12 July, 1965], No. 30848/66. Heading F4V. A device for admitting ventilating air to a room, particularly behind a radiator, comprises a rectangular box 2 having an adjustable damper 5 which varies the outflow. The spacing of walls 3, 4 of the box is 17-21 mm. A duct 6 supplies the ventilating air and is connected to one wall of the box immediately adjacent the bottom thereof. |
