Selective vacuum lifting device

Details Selective vacuum lifting device Selective vacuum lifting device

1980-05-27

1982-12-07

Spar, Robert J.

Material or article handling

Load carried along a horizontal linear path

Having gripper means

414744B, 414786, 294 64R, 198689, B66C 102

Patent

active

043624618

ABSTRACT:
A vacuum lifting device having a plurality of chambers, each chamber having an isolating member within to control communication between a common vacuum plenum and a sheet engaging surface. Each isolating member is controllable independent of the presence of an article adjacent the sheet engaging surface to allow for lifting selected ones of a plurality of articles. Those chambers which overlie at least a portion of a selected article and which overlie no portion of an unselected article are activated, or, alternatively, those chambers which overlie a single selected article completely within the peripheral boundaries thereof are activated.

REFERENCES:
patent: 3743340 (1973-07-01), Williamann
patent: 3910621 (1975-10-01), Hillier
patent: 4236710 (1980-12-01), Nakamura
patent: 4252497 (1981-02-01), Burt

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