| 摘要 |
1356078 Measuring fluid-flow NOROSAEN 20 Dec 1972 [30 Oct 1972] 58954/72 Heading G1R In a rotatable vane flow rate indicator in which a wall 32 separates inlet and outlet ports 52, 54, a rotatable vane 44 abuts a spring loader vane 82 located in the free edge 36 of the wall 32 to prevent leakage between the vane 44 and the wall 32. |
