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Quick-acting backup tool for welding ductsAlignment and backup tool facilitates butt welding of large-diameter ducts. It consists of a circular three-place segmented hoop, a pneumatic piston, and two shoes.
Document ID
19690000389
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Johnson, L. L.
Date Acquired
August 5, 2013
Publication Date
September 1, 1969
Subject Category
Mechanics
Report/Patent Number
MFS-18404
Report Number: MFS-18404
Accession Number
69B10396
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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