US3695221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating apparatus
Assignee: Paper Converting Machine Co
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Filing: 1971-05-24
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Granted: 1972-10-03
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Expires: 1991-05-24
Abstract
Abstract Coating apparatus for the application of fluid media to a traveling web wherein a unique fountain arrangement is provided for a reverse angle doctor blade to minimize foaming.
Inventors
- 👤 Edwin K Schaeuble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:50
CPC Classifications
B; B41; B41F; B41F9/00; B41F9/06; B41F9/061
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
In coatIng apparatus, a frame, a roll journaled for rotation in said frame, means operably associated with said frame for advancing a web into contact with said roll, a casing on said frame in juxtaposition to said roll, said casing having side, end, and bottom walls, said end walls being spaced from the ends of said roll to provide a small gap therebetween, said bottom wall being equipped with a generally planar elongated doctor blade arranged to contact said roll between said end walls and cooperating with said casing and said roll to define a chamber for the receipt of a fluid, means for delivering fluid to said chamber, said blade being disposed to develop a scraping as contrasted to a wiping action on said roll, a housing about said roll and casing, and means on said frame for moving said casing and blade toward or away from said roll.
Claim 2
Dependent Claim
150 words
In coatIng apparatus, a frame, a roll journaled for rotation in said frame, means operably associated with said frame for advancing a web into contact with said roll, a casing on said frame in juxtaposition to said roll, said casing having side, end, and bottom walls, said end walls being spaced from the ends of said roll to provide a small gap therebetween, said bottom wall being equipped with a generally planar elongated doctor blade arranged to contact said roll between said end walls and cooperating with said casing and said roll to define a chamber for the receipt of a fluid, means for delivering fluid to said chamber, said blade being disposed to develop a scraping as contrasted to a wiping action on said roll, a housing about said roll and casing, and means on said frame for moving said casing and blade toward or away from said roll.
Claim 3
Dependent Claim
95 words
The apparatus of claim 1 in which said casing is equipped with a baffle extending parallel to said blade and positioned to divide said chamber into two elongated parts, one part being defined by said roll, blade, end and bottom walls, and the other being defined by said end, bottom, and side walls, said delivering means being positioned in said side wall below the top of said baffle, said baffle being of lesser height than said side wall whereby fluid coating entering said other part must flow over said baffle to each said one part.
Claim 4
Dependent Claim
20 words
The apparatus of claim 1 in which wiper means are interposed between said housing and the ends of said roll.
Claim 5
Dependent Claim
24 words
The structure of claim 1 in which said means for moving said casing and blade also includes mechanism for rotating said casing and blade.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |