| 摘要 |
<p>1,151,909. Valves. C. B. COLEMAN. 23 Nov., 1966 [26 April, 1966], No. 52458/66. Heading F2V. A discharge valve fitted to the lower end of an oil drum 22 or like container comprises a synthetic rubber member 44 having lips 12, 13 which are urged together by the pressure of the fluid in the drum, and are openable to the chain line position by inserting a discharge pipe 31 from outside the container.</p> |
