Back to results
US 8,418,537 B1Granted
Device and method for detecting the presence of corrosive material in drywall
AssigneeEnviron International Corporation
InventorThomas D. Gauthier
Life of this patent
Estimating the term…
Abstract
A method for detecting the presence of corrosive material in drywall utilizing a testing device having a metal pin for insertion in the drywall, where the pin forms a visible layer when it reacts with corrosive materials in the drywall.
Claims18
A method for detecting the presence of corrosive material in drywall having a gypsum core comprising:
- providing a testing device having a handle with a security seal affix to the distal face of the handle by frangible member and a pin projecting from the handle made of a metal that forms a visible layer or scale when it reacts with corrosive materials;
- pressing the pin into the core of the drywall to be tested and affixing the security seal to the surface of the drywall;
- leaving the pin in place a sufficient period to produce a visible layer indicative of the presence of a detectable amount of corrosive material;
- and
- removing and inspecting the pin to determine whether the visible layer indicative of the presence of corrosive material in the core is present.
2 more elements
A testing device for detecting the presence of corrosive material in drywall comprising:
- a handle with a pin projecting from the handle and a security seal affix to the distal face of the handle by frangible member, the pin being made of a metal that forms a visible layer or scale when it reacts with the corrosive materials.
Dependencies are inferred from the claim text.