Elevating table and transporting method

Details Elevating table and transporting method Elevating table and transporting method

1990-05-07

1991-09-24

Bucci, David A.

Material or article handling

Elevator or hoist and loading or unloading means therefor

Grab

20429823, 20429825, 20429826, 20429827, 414217, B65G 4905, H01L 2168

Patent

active

050510541

ABSTRACT:
An elevating table has a housing with a workpiece support movably guided in an upward and downward direction by which a disk-shaped workpiece is transportable into a processing chamber of a vacuum installation. To correct the position of the workpiece placed by a machine into the workpiece support, as well as for securing the workpiece during transport, holding elements are disposed on opposite sides of the elevating table. These comprise in each instance a rod at the end of a jib which is disposed on a shaft rotatably supported in the elevating table and which is rotatable by a motor within a pivotal range in order to bring the holding element into one of two different positions. With two holding elements disposed next to each other on one side of the elevating table and one holding element disposed on the opposite side of the elevating table, the position of the workpiece on the workpiece support can be corrected. A disk disposed at the each of each rod of the holding element extends over the edge of the workpiece and secures it during upward transport. The holding element is then pivoted outwardly by the motor and comes to lie with the disk underneath a covering to be protected against the effects the surface treatment of the workpiece in the processing chamber.

REFERENCES:
patent: 4548699 (1985-10-01), Hutchinson et al.
patent: 4705951 (1987-11-01), Layman et al.
patent: 4895107 (1990-01-01), Yano et al.
patent: 4944645 (1990-07-01), Suzuki
patent: 4944860 (1990-07-01), Bramhall, Jr. et al.

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