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US 6,590,403 B1Granted
Material regression sensor
AssigneeOrbital Technologies Corporation
InventorsDaniel J. Gramer, Thomas J. Taagen
Life of this patent
Estimating the term…
Abstract
A material regression sensor and a method of measuring the regression of a material in which the regression sensor includes spaced electrically conductive legs, and electrically conductive sensor element position between the legs and measurement leads electrically connected with the first and second legs.
Claims25
A material regression sensor comprising:
- first and second electrically conductive legs, said conductive legs being spaced from one another and each having a test end, a measurement end and a length extending between said test end and said measurement end;
- an electrically conductive sensor element positioned between, and being electrically connected with, said first and second conductive legs, said conductive sensor element extending along at least a portion of the length of said first and second conductive legs;
- and
- first and second measurement leads electrically connected respectively with said first and second legs.
1 more element
A method of measuring the regression of a material having a regression surface comprising:
- providing a sensor having a pair of spaced electrically conductive legs each having a test end, a measurement end and a length between said test and said measurement end, an electrically conductive sensor element positioned between said pair of legs and extending along at least a portion of the length of said first and second legs between their test and measurement ends and a pair of measurement leads electrically connected to said pair of legs;
- embedding said sensor in said material with said test end of each of said legs extending toward said regression surface;
- applying a measurement voltage or current to said leads.
A test material and material regression sensor incorporated therein for measuring the surface regression of a surface of said test material comprising:
- a test material having a regression surface;
- and
- a material regression sensor embedded in said test material wherein said sensor includes;
- first and second spaced electrically conductive legs, each of said first and second legs having a test end and an opposite end and being oriented in said test material with their test end extending toward said regression surface,
- an electrically conductive sensor element having a portion positioned between said first and second legs at a point between said test and opposite ends of said legs said conductive sensor element extending at along least a portion of the length of said first and second conductive lengths.
2 more elements
Dependencies are inferred from the claim text.