Patent ID: 6799394
Filing Date: 2004-10-05
Classification: C23C,H01L

Abstract:
An apparatus for sealing a vacuum chamber comprising:a frame elevator connected to first ends of a plurality of guide stems; a plurality of first stroke cylinders having a plurality of first piston rods connected to the frame elevator for linearly moving the frame elevator; a support frame fixedly connected to second ends of the guide stems and pivotally connected with a plurality of levers; at least one second stroke cylinder mounted in the frame elevator, the second stroke cylinder having a second piston rod that moves parallel to the guide stems, the first piston rods passing into the support frame to control the plurality of levers, a connecting rod movably located within the support frame; a transmitting rod connecting the plurality of levers and a middle of the connecting rod; a plurality of direction-changing mechanisms pivotally connected to opposing ends of the connecting rod; and a door pivotally connected to the direction-changing mechanisms; such that, when the second piston rod of the second stroke cylinder moves the plurality of levers, the transmitting rod and the connecting rod, the door is moved linearly in a direction perpendicular to a longitudinal axis of piston rod.