Gauge for measuring the thickness of a coating on a substrate
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Mar 10, 1992
Grant Date -
N/A
app pub date -
Oct 17, 1990
filing date -
Oct 17, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A gauge for measuring the thickness of a coating on a substrate includes a housing, an indicator rod movably positioned within the housing, a magnet mounted on the forward end of the indicator rod, and a spring connected to the rearward end of the indicator rod. The housing can have a slot extending along a portion thereof that communicates with the interior of the housing. According to one embodiment, a measurement scale can be positioned adjacent to and extending along the length of the slot and a plurality of indicating marks can be provided on the rod for permitting the thickness of the coating to be determined. The particular indicating mark that is used for determining the thickness of the coating is dependent upon the orientation of the gauge relative to the force of gravity. According to another aspect of the present invention, the magnet can be fabricated from a combination of at least one light rare earth element and at least one heavy rare earth element.
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Patent Citation Ranking
- 10 Citation Count
- G01B Class
- 0 % this patent is cited more than
- 33 Age