| 摘要 |
The monitored spring unit is divided into two separate springs, or spring sets (1,2) of the same size and strength, mounted in a row on a core (4), on which a compression ring (7) slides at one end. A drive dog remains in the middle position, whether at rest or under load. When the force exerted by one of them spring is reduced, the dog moves from the middle position, causing a attached linkage (16,17) the compression ring, and the stop to actuate a release catch. ADVANTAGE - Max. safety without dependence on a reference force.
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