| 摘要 |
<p>1415109 Measuring fluid-flow DELAVAL TURBINE Inc 13 Dec 1973 [29 Dec 1972] 57760/73 Heading G1R [Also in Division H1] In a flow indicator having a flexible flap 20, of moulded elastomeric material carrying a bar magnet 22 moulded thereon, hingedly mounted in a chamber 14, formed in a plastics material housing 12, between inlet 16 and outlet 18 the arrangement is such that at least one magnetically responsive electrical contact 24 is actuated by the magnet 22 as the flap 20 is flexed towards the outlet 18 to operate an electric circuit comprising an array of lamps, alarm relays or automatic system controls. The housing may be provided with a transparent cover 30, Fig. 5 (not shown).</p> |
