US 5,858,088 A · Device for lifting crystal bodies

Abstract

The winding drum of the cable-winding device is kept air-tight by an air-tight container. A lower elastic sealing member 1a is interposed between the air-tight container and the rotation table. The air-tight container, the lower elastic sealing member 1a, and the chamber are communicated with one another. The air-tight container and the chamber are filled with inert gases at less than atmospheric pressure. The rotation table, the weight sensors, the drive motor, the gear are disposed in the atmosphere. An arm is vertically installed on the rotation table. An upper elastic sealing member 1b is interposed between the end portion of the arm and the air-tight container. The upper elastic sealing member is communicated the interior of the air-tight container through a through hole. The arm support the top portion of the upper elastic sealing member.

Claims5

Dependent claims

A device for lifting crystal bodies, comprises:

a chamber;
a rotation table installed on the chamber;
a weight sensor installed on the rotation table;
a cable-winding device disposed on the weight sensor, the cable-winding device including a winding drum;
an air-tight container for keeping the winding drum air-tight, the air-tight container being communicated with the chamber;
a lower elastic sealing member for surrounding a cable which is suspended from the winding drum into the chamber and for making the air-tight container communicate with the chamber;
an arm Installed on the rotation table and extending over the air-tight container;
and
a hollow upper elastic sealing member provided between an upper surface of the air-tight container and the arm, and communicated with the air-tight container, top portion thereof being supported by the arm.

6 more elements

Dependencies are inferred from the claim text.

Device for lifting crystal bodies

Life of this patent

Device for lifting crystal bodies

Life of this patent

Abstract

Claims5