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    • 5. 发明授权
    • Grasping fingers
    • 格子手指
    • US3574386A
    • 1971-04-13
    • US3574386D
    • 1968-06-17
    • JAMES D FROST
    • FROST JAMES D
    • A01D46/24B25J15/00B66C1/10
    • A01D46/24B25J15/0023
    • Improved inflatable grasping or picking fingers forming articlegrasping elements for handling various articles, such as in the picking of fruit from trees or transferring fruit or food from one conveyor to another or depositing the same within containers, each finger having a rigid support or ''''bone'''' and tie means for limiting the radial distention of the finger from the support when it is inflated. In one form of the invention, the outer covering of the finger is connected to the central support by flexible threads or strands. In another form, the outer covering is connected to the central support by a web of sheet fabric disposed transversely or longitudinally of the support. In still another form, the outer contour of the finger is defined by the free portions of a plurality of sections or chambers of flexible material. In one form the sections are partitioned longitudinally of the central support with provision for individually selectively inflating the sections. In another form, the sections are substantially coextensive with and disposed circumferentially about the central support with the longitudinal axes of the sections generally parallel thereto, including means for selectively inflating any or all of the sections; whereby some of the articles being grasped may be dropped while a holding grip is retained on others. In still another form, the sections are partitioned both longitudinally and circumferentially of the central support.