APPARATUS AND METHOD FOR REPAIRING DAMAGE TO PIPE COATINGS
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United States of America Patent
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Issued Date -
Mar 7, 2019
app pub date -
Aug 8, 2018
filing date -
Aug 8, 2018
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Abstract
A handheld induction heater may be used to deliver heat to a coated steel pipe in a localized area of where the coating has been damaged, to heat the steel pipe to a high enough temperature for curing a coating repair material applied in the damaged area without causing heat damage to the existing coating. In one embodiment, the handheld induction heater has a main body housing two or more induction “pancake” coils. The main body is configured for conformation with the diameter of the specific pipe on which the induction heater is to be used. The main body may also incorporate electromagnets to hold the heater in place on the pipe during the heating cycle, as well as a thermocouple for sensing the temperature of the pipe so that the heater can be automatically shut off when the pipe reaches a preset temperature.
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