US3801349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating a continuous metallic strip with pulverant material with a non-destructive measuring method
Assignee: Caterpillar Inc
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Filing: 1970-08-07
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Granted: 1974-04-02
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Expires: 1990-08-07
Abstract
Abstract Characteristics of a pulverant material coating or its supporting surface can be determined by measurement of diffused energy return after impingement with beam of light, ultraviolet, infra-red, monochromatic light, or the like. Methods and apparatus for non-destructive measurement of characteristics such as coating thickness during electrostatic coating process for metallic powder on a continuous metallic strip are provided.
Inventors
- 👤 W Wilson
- 👤 G Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:12
CPC Classifications
G; G05; G05D; G05D5/00; G05D5/02; G05D5/03; B; B05; B05B; B05B12/00; B05B12/08; B05B12/12; B05B12/126; G01; G01B; G01B11/00; G01B11/02; G01B11/06; G01B11/0616; G01B11/0625
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
20 words
The method of claim 1 in which impingement of the non-penetrative type radiant energy is substantially normal to such strip.
Claim 2
Dependent Claim
25 words
The method of claim 1 including the step of controlling deposition of such pulverant material responsive to measurement of such scattered non-penetrative type radiant energy.
Claim 3
Dependent Claim
31 words
The method of claim 1 in which coating weight of the pulverant material per unit area of the continuous metallic strip is controlled responsively to such measurement of such scattered radiation.
Claim 4
Dependent Claim
44 words
The method of claim 1 further including the step of wetting the surface of the continuous strip with a binding agent prior to deposition of pulverant material to coat the continuous metallic strip with a slurry of the pulverant material and the binding agent.
Claim 5
Dependent Claim
37 words
The method of claim 1 further including the steps of measuring the speed of longitudinal strip movement, and combining the strip speed measurement with the scattered radiant energy measurement to determine the rate of pulverant material deposition.
Claim 6
Dependent Claim
14 words
The method of claim 1 wherein the pulverant material comprises powdered metal includes chromium.
Claim 7
Dependent Claim
14 words
The method of claim 5 wherein the binding agent includes a halogen containing solution.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |