Dynamically calculated refractive index for determining the thickness of roofing materials
US9977424B2 · kind B2 · utility
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1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Sep 11, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/37398
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a system for measuring and controlling the thickness of asphalt roofing materials during manufacturing. Light beams are used to generate a time of flight signal that is used to determine the thickness of the asphalt roofing layer. A controller generates a thickness control signal that controls a coater to modify parameters of the coater to produce the asphalt roofing layer with a desired thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.