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US4943447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive coating treating process
Assignee: Illinois Tool Works Inc
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Filing: 1989-09-06
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Granted: 1990-07-24
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Expires: 2009-09-06
Abstract
Abstract A process for heat treating a coating applied to an automobile body is disclosed. The process is carried out with apparatus which includes radiant heating elements for generating radiant heat in a predetermined path and convection heating elements for generating the flow of heated air. The method comprises the steps of positioning a freshly coated automobile body within the apparatus and heating the body with the radiant heat for a time sufficient to set the coating on Class A surfaces of the body. After the Class A surfaces are set, heated air is flowed around the body to heat the body and cure the coating on the Class A surfaces and the non-Class A surfaces.
Inventors
- 👤 James S. Nelson
- 👤 Scott L. Angell
- 👤 Jack E. Mannerud
- 👤 Charles H. Bergman, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:40
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/28; F26B3/283
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
201 words
A process for finishing an automobile body with an E-coat, a base coat and a clear coat with apparatus having radiant heating means for generating infrared radiation and convection heating means for generating a flow of heated air, said radiant heating means including a plurality of zones with an intensity of at least a given zone separately controllable from an intensity of other zones, (a) applying an E-coat to said automotive body; (b) setting said E-coat with said infrared radiation while separately controlling at least said given zone in response to a predetermined characteristic of said body within said given zone; (c) curing said E-coat with said heated air; (d) applying a base coat to said automotive body; (e) setting said base coat with said infrared radiation while separately controlling said given zone in response to a predetermined characteristic of said body within said given zone; (f) drying said base coat with said heated air; (g) applying a clear coat to said automotive body; (h) setting said clear coat with said infrared radiation while separately controlling said given zone in response to a predetermined characteristic of said body within said given zone; (i) curing said clear coat with said heated air.
Claim 2
Dependent Claim
201 words
A process for finishing an automobile body with an E-coat, a base coat and a clear coat with apparatus having radiant heating means for generating infrared radiation and convection heating means for generating a flow of heated air, said radiant heating means including a plurality of zones with an intensity of at least a given zone separately controllable from an intensity of other zones, (a) applying an E-coat to said automotive body; (b) setting said E-coat with said infrared radiation while separately controlling at least said given zone in response to a predetermined characteristic of said body within said given zone; (c) curing said E-coat with said heated air; (d) applying a base coat to said automotive body; (e) setting said base coat with said infrared radiation while separately controlling said given zone in response to a predetermined characteristic of said body within said given zone; (f) drying said base coat with said heated air; (g) applying a clear coat to said automotive body; (h) setting said clear coat with said infrared radiation while separately controlling said given zone in response to a predetermined characteristic of said body within said given zone; (i) curing said clear coat with said heated air.
Claim 3
Dependent Claim
33 words
A process according to claim 1 wherein said E-coat is cured with said hot air after said E-coat has been set on Class A surfaces of said automotive body by said infrared radiation.
Claim 4
Dependent Claim
35 words
A process according to claim 1 wherein said base coat is dried by said heated air after said base coat has been set on Class A surfaces of said automotive body with said infrared radiation.
Claim 5
Dependent Claim
35 words
A process according to claim 1 wherein said clear coat is cured by said heated air after said clear coat has been set on Class A surfaces of said automotive body by said infrared radiation.
Claim 6
Dependent Claim
17 words
A process according to claim 1 wherein said characteristic includes at least a color of said body.
Claim 7
Dependent Claim
17 words
A process according to claim 1 wherein said characteristic includes at least surface contours of said body.
Claim 8
Dependent Claim
21 words
A process according to claim 1 wherein said characteristic includes at least a positioning of said body within said given zone.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-23 | 1994-01-22 | 1994-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-23 | 1998-01-22 | 1998-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-23 | 2002-01-22 | 2002-07-24 | $7700.00 | Window Closed / Lapsed |