| 摘要 |
1,106,384. Ventilators. COLT VENTILATION & HEATING Ltd. 2 Nov., 1964 [31 July, 1963], No. 30395/63. Addition to 1,069,871. Heading F4V. A ventilator comprises two parallel banks of louvres as described in Specification 1,069,871 below which is a sill 15 formed by a plate having an upwardly extending extension 17. on the inside of the ventilator and having an edge 16 projecting in front of the ventilator to collect and discharge rainwater from the ventilator. The louvres may be adjustable.
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