Metal fusion bonding – Process – Plural joints
Patent
1983-08-26
1984-07-31
Crane, Daniel C.
Metal fusion bonding
Process
Plural joints
29559, 29423, 294263, 29469, 269 481, 405136, 228151, B23K 3102
Patent
active
044625359
ABSTRACT:
This invention relates to improved apparatus and process for manufacture of tunnel modules and tunnel sections used to build underwater tunnel tubes. A collapsible fixture is used to roll up a steel plate into a cylindrical shell. Cables wrapped around channels on the outer ends of fixtures are used to roll up the fixture along the plate. After the fixture with the shell on it is placed on pedestals for further fabrication, cables placed in the channels are used to rotate the shells. After the fixture is collapsed within the shell, it is raised up by pedestal lifting mechanisms, and wheels provided on the fixture are lowered into place to aid in removal of the fixture from the shell, and onto a roll-out table. Roller mechanisms are also used to aid in the removal of the fixture from the shell. The roll-out table is situated between two sets of pedestals and used in the removal of fixtures from single modules or sets of modules. A common winch is utilized to pull out the fixture onto the table from each shell module.
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patent: 4233020 (1980-11-01), Oswald
Jacobs Morton
Johnston Edward
Kaucic Robert A.
Miller Melvin E.
Amca International Corporation
Crane Daniel C.
Jones David B.
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