Vacuum chamber seal
United States Patent 3351348

Inventors:
Dupuis, Clyde F.
Publication Date:
11/07/1967
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Assignee:
CONTINENTAL CAN CO
Primary Class:
277/345
Other Classes:
277/906, 118/50, 236/92R, 34/242, 68/5E
International Classes:
C21D1/773; C23C14/56; C21D1/74
US Patent References:
2890878Apparatus for annealing in a high vacuum
2986911Pressure sealing device
3011266Method of steaming fibrous strip materials
3158507Floating roller seal
3170576Rotary seal