Linear motion apparatus under ultra high vacuum

Details Linear motion apparatus under ultra high vacuum Linear motion apparatus under ultra high vacuum

1997-07-31

2000-02-01

Graysay, Tamara L.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74 182, 74503, 414 3, 414 7, 414935, 901 21, 4031091, B25J 108

Patent

active

060190086

ABSTRACT:
A linear motion apparatus for moving an object in a vacuum chamber comprising an antenna or a telescoping shaft such as a fishing rod to effectively utilize space, and to avoid the need of a rear projection thereby achieving stability. The linear motion apparatus includes: a body having a space portion penetrated horizontally; a rotary handle which penetrates at a right angle to the space portion of the body thereby controlling a linear motion; locking portion which is mounted in the space portion of the body, is inserted into a shaft of the rotary handle, and used to lock the motion; a guide rod which is formed as a multistage rod, whose one end is inserted and fixed into a predetermined position of the space portion of the body; linear motion force providing portion whose one end is fixed to the rotary plate and the other end is fixed to a nose portion of the guide rod, thereby providing a linear motion force to the guide rod; and a bellows seal which surrounds a circumference of the guide rod, is shrunken or expanded according to a linear motion of the guide rod. As a result, this apparatus performs a linear motion control by a contraction and expansion under ultra high vacuum.

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