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Toroid Joining Gun For Fittings And CouplingsHand-held gun used to join metal heat-to-shrink couplings. Uses magnetic induction (eddy currents) to produce heat in metal coupling, and thermocouple to measure temperature and signals end of process. Gun, called "toroid joining gun" concentrates high levels of heat in localized areas. Reconfigured for use on metal heat-to-shrink fitting and coupling applications. Provides rapid heating, operates on low power, lightweight and portable. Safe for use around aircraft fuel and has no detrimental effects on surrounding surfaces or objects. Reliable in any environment and under all weather conditions. Gun logical device for taking full advantage of capabilities of new metal heat-to-shrink couplings and fittings.
Document ID
Document Type
Other - NASA Tech Brief
Fox, Robert L. (NASA Langley Research Center, Hampton, VA.)
Swaim, Robert J. (NASA Langley Research Center, Hampton, VA.)
Johnson, Samuel D. (NASA Langley Research Center, Hampton, VA.)
Buckley, John D. (NASA Langley Research Center, Hampton, VA.)
Copeland, Carl E. (Inductron Corp.)
Coultrip, Robert H. (Inductron Corp.)
Johnston, David F. (Inductron Corp.)
Phillips, William M. (Inductron Corp.)
Date Acquired
August 15, 2013
Publication Date
December 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 16
Issue: 12
ISSN: 0145-319X
Subject Category
Report/Patent Number
Distribution Limits
Work of the US Gov. Public Use Permitted.