| 摘要 |
<p>945,564. Ventilator tops; dust collectors. FULLER CO. May 19, 1961 [June 10, 1960], No. 18357/61. Heading F4J. [Also in Division B1] A conical cowl 26 is secured by vertical spaced bars 24 to the side 3 of a cylindrical air filter casing so as to be spaced from and shield the casing cover 4 through the raised centre of which projects the filtered air outlet duct 16 and to provide a peripheral air outlet 27 leading to atmosphere. Rainwater blown by the wind through the peripheral opening 27 and deposited on the cover 4 is drained through a peripheral opening 22 formed between the periphery of the cover 4 and a flanged ring 20 connected by straps 18 to the casing side 3 and serving to support the bars 24. Specification 936,487 is referred to.</p> |
