B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
154/144, 117/62,
B05D 5/00 (2006.01) B32B 5/20 (2006.01) F16L 59/16 (2006.01)
Patent
CA 1119480
ABSTRACT A method of marking a point on an object being covered by a foamable liquid as disclosed wherein the formation of foam occurs in an exothermic reaction. The method includes applying a marking liquid to the object together with the foamable liquid such that the liquid is characterized by undergoing vaporization at a temperature below the maximum temperature of the foam during the exothermic reaction and thereafter, alloqing the foamable liquid to rise. The resulting foam rises to a greater degree at the point of application of the marking liquid as a result of vaporization of the latter during formation of the foam.
349726
Henderson Stewart
Hielema Ralph
Barrigar & Moss
Ckr Inc. (rule 141)
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