US4598023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming a coating on a hot vitreous substrate by spraying the substrate while heating the zone that is sprayed and product
Assignee: AGC Glass Europe SA
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Filing: 1984-05-09
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Granted: 1986-07-01
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Expires: 2004-05-09
Abstract
Abstract A hot vitreous substrate 1 travels on a conveyor 2 through a coating station 5 where a metal compound is formed in situ on a face of the substrate 1 by pyrolytic decomposition of coating material 9 sprayed towards the substrate from a spray head 6 which repeatedly traverses the substrate path. Radiant heating means 11 located on the side of the substrate 1 being coated directs radiant heat towards the transverse region swept by the zone of impingement 10 of the coating precursor material 9 on the substrate 1.
Inventors
- 👤 Robert Van Laethem
- 👤 Albert Van Cauter
- 👤 Robert Terneu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:28
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/001; C03C17/002
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
117 words
A method of forming a metal compound coating on a side of a hot vitreous substrate as it is conveyed along a substrate path through a coating station, comprising the steps of: (a) spraying coating precursor material towards the substrate by means which repeatedly traverses the substrate path, said coating precursor material being deposited on said substrate at a zone of impingement which sweeps transverse regions of the substrate and decomposing pyrolytically to form said coating in situ on said substrate; and (b) directing radiant heat from radiant heating means located on the side of the substrate being coated towards the transverse region swept by the zone of impingement of the coating precursor material on the substrate.
Claim 2
Independent Claim
117 words
A method of forming a metal compound coating on a side of a hot vitreous substrate as it is conveyed along a substrate path through a coating station, comprising the steps of: (a) spraying coating precursor material towards the substrate by means which repeatedly traverses the substrate path, said coating precursor material being deposited on said substrate at a zone of impingement which sweeps transverse regions of the substrate and decomposing pyrolytically to form said coating in situ on said substrate; and (b) directing radiant heat from radiant heating means located on the side of the substrate being coated towards the transverse region swept by the zone of impingement of the coating precursor material on the substrate.
Claim 3
Dependent Claim
31 words
A method according to claim 1, wherein step (a) is conducted by spraying said coating precursor material obliquely towards the path of the substrate in a direction leading along the path.
Claim 4
Dependent Claim
50 words
A method according to claim 1, wherein said substrate is conveyed in a downstream direction along said substrate path, and wherein step (a) is conducted by spraying said coating precursor material obliquely towards the path of the substrate in a direction leading along the path and in the downstream direction.
Claim 5
Dependent Claim
33 words
A method according to claim 1, wherein step (b) is conducted by directing radiant heat from radiant heating means having a black body temperature in the range 900° C. to 1,600° C. inclusive.
Claim 6
Dependent Claim
32 words
A method according to claim 1, wherein step (b) is conducted by directing radiant heat from radiant heating means which includes a plurality of heaters disposed along the path of the substrate.
Claim 7
Dependent Claim
37 words
A method according to claim 1, further comprising controlling the intensity of radiation directed towards the transverse region swept by the zone of impingement by adjusting the height of the radiant heating means above the substrate path.
Claim 8
Dependent Claim
70 words
A method according to claim 1, further comprising controlling the radiant heat so that for any increment of the area of the substrate the temperature of the surface being coated varies, if at all, by less than 15° C. between the time when such incremental area is first coincident with the zone of impingement of the coating precursor material and the time when it is last coincident with that zone.
Claim 9
Dependent Claim
16 words
A method according to claim 7, wherein such temperature so varies by less than 10° C.
Claim 10
Dependent Claim
48 words
A method according to claim 1, wherein step (b) is conducted by directing radiant heat from radiant heating means which includes a plurality of heaters disposed across the path of the substrate whereby the quantities of heat directed towards different width increments of the substrate are independently adjustable.
Claim 11
Dependent Claim
46 words
A method according to claim 9, further comprising controlling the radiant heat so that, for any increment of the length of the substrate, the temperature of the surface to be coated varies, if at all, by less than 15° C. across the substrate width during coating.
Claim 12
Dependent Claim
10 words
Vitreous material coated by a method according to claim 1.
Claim 13
Independent Claim
101 words
A method of forming a metal compound coating on a hot vitreous substrate as the substrate moves along a substrate path through a coating station, comprising the steps of: (a) spraying said substrate with a coating precursor material which pyrolytically decomposes to form said coating in situ on said substrate, said coating precursor material being deposited on said substrate at a zone of impingement which sweeps transverse to said path; and (b) directing radiant heat, from radiant heating means mounted at said station, toward said zone of impingement as said coating precursor material is being deposited at said zone of impingement.
Claim 14
Independent Claim
101 words
A method of forming a metal compound coating on a hot vitreous substrate as the substrate moves along a substrate path through a coating station, comprising the steps of: (a) spraying said substrate with a coating precursor material which pyrolytically decomposes to form said coating in situ on said substrate, said coating precursor material being deposited on said substrate at a zone of impingement which sweeps transverse to said path; and (b) directing radiant heat, from radiant heating means mounted at said station, toward said zone of impingement as said coating precursor material is being deposited at said zone of impingement.
Claim 15
Dependent Claim
27 words
A method according to claim 12, wherein step (a) is conducted by directing the spray obliquely toward said path and in a direction leading along said path.
Claim 16
Dependent Claim
36 words
A method according to claim 12, wherein said substrate moves along said path in a downstream direction, and wherein step (a) is conducted by directing the spray obliquely toward said path and in said downstream direction.
Claim 17
Dependent Claim
33 words
A method according to claim 12, wherein step (b) is conducted by directing radiant heat from a radiant heating means having a black body temperature ranging from 900° C. to 1,600° C. inclusive.
Claim 18
Dependent Claim
29 words
A method according to claim 12, wherein step (b) is conducted by directing radiant heat from radiant heating means which includes a plurality of heaters disposed along said path.
Claim 19
Dependent Claim
35 words
A method according to claim 12, further comprising the step of controlling the intensity of the radiation directed toward said zone of impingement by adjusting the distance between said radiant heating means and said substrate.
Claim 20
Dependent Claim
72 words
A method according to claim 12, further comprising the step of controlling the intensity of the radiation directed toward said zone of impingement so that for any incremental area at the surface of the substrate which is being coated, the temperature varies by less than 15° C. between the time when said incremental area is first coincident with said zone of impingement and the time when said incremental area is last coincident.
Claim 21
Dependent Claim
40 words
A method according to claim 18, wherein the temperature varies by less than 10° C. between the time when said incremental area is first coincident with said zone of impingement and the time when said incremental area is last coincident.
Claim 22
Dependent Claim
45 words
A method according to claim 12, wherein step (b) is conducted by directing heat from radiant heating means which includes a plurality of heaters disposed across said path so that the quantities of heat directed toward different width increments of said substrate are independently adjustable.
Claim 23
Dependent Claim
42 words
A method according to claim 20, further comprising controlling the radiant heat so that, for any increment of the length of the substrate, the temperature of the surface being coated varies by less than 15° C. across the substrate width during coating.
Claim 24
Dependent Claim
11 words
A vitreous material coated by a method according to claim 12.
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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) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |