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Title: Manipulaton hairing thermally conductive rotary joint for transferring heat from a test specimen

Patent ·
OSTI ID:5738699

A manipulator for rotatably moving a test specimen in an ultra-high vacuum chamber includes a translational unit movable in three mutually perpendicular directions. A manipulator frame is rigidly secured to the translational unit for rotatably supporting a rotary shaft. A first copper disc is rigidly secured to an end of the rotary shaft for rotary movement within the vacuum chamber. A second copper disc is supported upon the first disc. The second disc receives a cryogenic cold head and does not rotate with the first disc. A sapphire plate is interposed between the first and second discs to prevent galling of the copper material while maintaining high thermal conductivity between the first and second discs. A spring is disposed on the shaft to urge the second disc toward the first disc and compressingly engage the interposed sapphire plate. A specimen mount is secured to the first disc for rotation within the vacuum chamber. The specimen maintains high thermal conductivity with the second disc receiving the cryogenic transfer line.

Assignee:
The United States of America as represented by the United States Department of Energy
Patent Number(s):
US 4538068
OSTI ID:
5738699
Resource Relation:
Patent File Date: Filed date 3 May 1983; Other Information: PAT-APPL-491134
Country of Publication:
United States
Language:
English