| 摘要 |
An adjustable carrying device ( 12 ) includes a pair of gripping members ( 14, 16 ) in a slip joint pivot connection having a handle assembly ( 36 ) and gripping plates ( 20 a, 20 b) for grasping and handling an object. A pivotally activated/deactivated locking mechanism includes a plurality of evenly spaced teeth ( 66 ) within a guide track ( 54 ) and a cross member ( 76 ) biased between lock and unlock positions by a pair of torsion springs ( 74 a , 74 b). A pair of levers ( 22 a , 22 b) moved in unison by handle assembly ( 36 ) activate and deactivate the locking mechanism. While in unlock position a pair of coil tension springs ( 84 ) assist in the single handed adjustment of the gripping plates against the object's opposed surfaces. A subsequent upward pivotal motion of handle assembly ( 36 ) activates the locking mechanism, forcing gripping plates ( 20 a , 20 b) towards each other, firmly gripping the object prior to its lift.
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