发明名称 Multiple block lifting device
摘要 These and other objects of the invention which will become apparent are met by a concrete block lifting device used to lift at least two blocks off a pallet for repositioning on a wall. The device includes a rigid, horizontal, support bar with a block gripping assembly attached thereto designed to selectively attach to blocks on a pallet and then securely engage the blocks when the device is lifted by the backhoe. The block gripping assembly includes a insert member perpendicularly aligned and extending downward from the support bar. Mounted pivotally on each insert member is an actuator arm. The upper end of the actuator arm is pivotally connected to a linking arm and a release handle. The upper ends of two linking arms converge and attach to a central plate. A cable connects the central plate to a bucket on a backhoe. When the central plate is lifted, the linking arms force the upper end of the actuator arms inward which forces the lower ends of the actuator arm outward to engage the inside wall of a central hole formed on the block.
申请公布号 US2003038493(A1) 申请公布日期 2003.02.27
申请号 US20020217904 申请日期 2002.08.13
申请人 HARRIS LOREN;HARRIS DAVID;HARRIS BRETT 发明人 HARRIS LOREN;HARRIS DAVID;HARRIS BRETT
分类号 B66C1/54;(IPC1-7):B66C1/54 主分类号 B66C1/54
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