| 摘要 |
<p>1530399 Integrating meters LGZ LANDIS & GYR ZUG AG 3 Dec 1976 [10 Dec 1975] 50532/76 Heading G1U [Also in Division F2] A device for preventing reverse rotation of a shaft of an electricity meter comprises a spiral cam formed in two parts one of which, 8, frictionally grips the shaft (not shown) when installed in a cavity 12 in the second part 9, the latter being slotted so that a surface 14 of the first part acts as part of the cam surface. The unequal arms 3, 4 of a pivoted lever 1 engage with tooth 13 to prevent clockwise rotation.</p> |
