Patent US3670695A successfully refreshed from Google Patents.
US3670695A
Expired / Lapsed
US
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Apparatus for controlling weight and distribution of a coating
Assignee: United States Steel Corp
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Filing: 1971-02-23
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Granted: 1972-06-20
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Expires: 1991-02-23
Abstract
Abstract An air knife assembly with a multiplicity of curved orifices spaced around its periphery for controlling the weight and distribution of a coating applied to a continuously moving substrate. Means are included for rotating the assembly to position any desired orifice into an operating position facing the substrate. Removable baffles prevent the flow of air to all of the knives except the one in the operating position.
Inventors
- 👤 Robert W Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:58
CPC Classifications
B; B05; B05C; B05C11/00; B05C11/02; B05C11/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
168 words
Apparatus for controlling the weight and distribution of a coating applied to a moving substrate which includes a coating control assembly located adjacent the path of travel of said substrate, said assembly comprising: a header section for receiving fluid under pressure and having an axis extending parallel to the surface of said substrate; a plurality of nozzles extending generally radially from said header section and spaced around its periphery, each nozzle having a passageway therethrough terminating in an arcuate slot at its outer end, the slot in each nozzle being of different length than the slot in each other nozzle; means for rotating said assembly about the axis of said header section to position one of said nozzles toward said substrate with its slot facing said substrate; and means for preventing flow of fluid from said header section to all of said nozzles except the one toward said substrate comprising removable baffle means inserted in all but said one nozzle between said header and the associated nozzle slot.
Claim 2
Dependent Claim
168 words
Apparatus for controlling the weight and distribution of a coating applied to a moving substrate which includes a coating control assembly located adjacent the path of travel of said substrate, said assembly comprising: a header section for receiving fluid under pressure and having an axis extending parallel to the surface of said substrate; a plurality of nozzles extending generally radially from said header section and spaced around its periphery, each nozzle having a passageway therethrough terminating in an arcuate slot at its outer end, the slot in each nozzle being of different length than the slot in each other nozzle; means for rotating said assembly about the axis of said header section to position one of said nozzles toward said substrate with its slot facing said substrate; and means for preventing flow of fluid from said header section to all of said nozzles except the one toward said substrate comprising removable baffle means inserted in all but said one nozzle between said header and the associated nozzle slot.
Claim 3
Dependent Claim
45 words
Apparatus as defined in claim 1 in which said first-named means comprises a gear wheel fixed to said header, a gear mounted external to and engaged with said first-named gear, and a power source connected to said second-named gear whereby said apparatus can be rotated.
Claim 4
Dependent Claim
25 words
Apparatus as defined in claim 1 further comprising means for adjusting said header in a plane normal to the path of travel of said substrate.
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |