Patent ID: 6019008
Filing Date: 2000-02-01
Classification: B25J,Y10S,Y10T

Abstract:
A linear motion apparatus under an ultra high vacuum, comprising:a body having a space portion penetrated horizontally;a rotary handle attached to a right angle shaft which extends at a right angle through said space portion of said body, wherein said right angle shaft penetrates through and is fixed to a rotary plate in said space portion of said body thereby controlling a linear motion;a locking screw mounted in a screw hole through said body to restrict a rotation of the rotary plate by friction force;a guide rod which is formed as a multistage telescoping rod, whose one end is inserted and fixed into a predetermined position of said space portion of said body;a wire having two ends whose one end is fixed to said rotary plate by weld and the other end is fixed to a nose portion of said guide rod by weld, thereby pushes and pulls said guide rod;a bellows seal which surrounds a circumference of said guide rod, is shrunken or expanded according to linear motion of said guide rod; anda first sealing flange adapted to engage a vacuum chamber wall for sealing the telescoping rod within a vacuum chamber.