| 摘要 |
The clamping device lifts a slab or panel of stone or similar material. The device includes a pair of jaws that engage opposite sides of the slab and a closing mechanism that urges the jaws together in response to the weight of the device and/or the material. A holding mechanism has a first condition that prevents the action of the closing mechanism and a second condition that allows action of the closing mechanism. A control means that changes the condition of the holding mechanism and is remotely operable by a human user through either a wired or wireless connection. The user can thereby control the clamping device without being endangered by proximity to the slab.
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