An improved intrinsically safe valve for a combustion spray gun and a method of operation

• Main Authors: SPAULDING, MARK F, WEBER, JAMES K, SAVILL, JR, ZAPKE, RICHARD A
• Format: Patent
• Language: Chinese; English
• Published: 01.04.2011
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; NOZZLES; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING

A valve for a combustion spray gun. An apparatus includes a torsion element rotatable relative to a housing of the combustion spray gun to a charged position. The apparatus also includes a biasing element applying a force to the torsion element, which force urges the torsion element to move a valve core to an off position. The apparatus further includes an engagement mechanism configured to selectively engage and hold the torsion element in the charged position.