| 摘要 |
PCT No. PCT/FR89/00549 Sec. 371 Date Jun. 11, 1991 Sec. 102(e) Date Jun. 11, 1991 PCT Filed Oct. 20, 1989 PCT Pub. No. WO91/05722 PCT Pub. Date May 2, 1991.A device for lifting sheets of glass brought on a conveyor, has at least one arm rotatable about a horizontal spindle, situated at the lower end of the arm, between a substantially vertical position for gripping the sheets on the conveyor and a substantially horizontal position for depositing the sheets. The device also has a support mounted on the upper end of each rotating arm, the support being slidable along the axis of the arm. The support carries first suction cups for gripping the sheets and at least two retractable arms fastened with the support, the arms being rotatable between a substantially horizontal axis carried by the support, each retractable arm being provided with second suction cups. The retractable arms and the second suction cups are disposed symmetrically with respect to the conveyor axis and in such a way that the sheets of large dimensions are gripped while being in equilibrium.
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