| 摘要 |
A device for minimizing damage to an electronic article resulting from an overload or jamming of the article that includes a shaft; a driven element carried on the shaft; a clutch plate carried on the shaft; and a torsion spring surrounding a portion of the shaft and having a first end connected to the clutch plate and a second end connected to the driven element such that the spring is windable by a first torque that is greater than a second torque and wherein the second torque produces an operating rotation of the driven element.
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