US4367691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for adjustment of the coating thickness in the coating of traveling webs
Assignee: Jagenberg Werke AG
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Filing: 1981-06-15
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Granted: 1983-01-11
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Expires: 2001-06-15
Abstract
Abstract In an apparatus for coating a traveling web and comprising coating means for the web, a doctor roll which bears on the coated side of the web, a doctor-roll bed supporting the doctor roll and secured to the machine frame through a mount, and means for adjusting the location of the doctor roll and thus for adjusting the coating thickness, the improvement wherein the doctor-roll bed is made of an elastomeric material, and the adjusting means includes an inflatable tube between the doctor-roll bed and its mount constructed as a pressure chamber in the doctor-roll bed.
Inventors
- 👤 Erwin Bergs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:15
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/08; D21H25/12; B; B05; B05C; B05C11/00; B05C11/02; B05C11/023; B05C11/025; D21H5/00; D21H5/0005; D21H5/006; D21H5/0062; D21H5/0067
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
In an apparatus for coating a traveling web and comprising coating means for the web, a doctor roll which bears on the coated side of the web, an elastomeric doctor-roll bed supporting the doctor roll and secured to the machine frame through a mount, the doctor roll bed including an inflatable tube constructed as a pressure chamber, and means for adjusting the location of the doctor roll and thus for adjusting the coating thickness, the improvement wherein the pressure chamber is joined through a central fillet extending parallel to the doctor roll to that part of the doctor-roll bed which carries the doctor roll.
Claim 2
Dependent Claim
104 words
In an apparatus for coating a traveling web and comprising coating means for the web, a doctor roll which bears on the coated side of the web, an elastomeric doctor-roll bed supporting the doctor roll and secured to the machine frame through a mount, the doctor roll bed including an inflatable tube constructed as a pressure chamber, and means for adjusting the location of the doctor roll and thus for adjusting the coating thickness, the improvement wherein the pressure chamber is joined through a central fillet extending parallel to the doctor roll to that part of the doctor-roll bed which carries the doctor roll.
Claim 3
Dependent Claim
21 words
An apparatus according to claim 1, wherein the elastomeric material of the doctor-roll bed has a Shore hardness of about 80.
Claim 4
Dependent Claim
40 words
An apparatus according to claim 1, wherein the mount which accommodates the doctor-roll bed comprises a pair of walls defining a guideway, the walls being parallel at their beginning and then diverging so that the guideway expands in dovetail fashion.
Claim 5
Dependent Claim
31 words
An apparatus according to claim 3, wherein the doctor-roll bed in proximity to the pressure chamber is provided with two bulges projecting beyond the otherwise parallel walls of the doctor-roll bed.
Claim 6
Dependent Claim
38 words
An apparatus according to claim 1, wherein the mount is substantially U-shaped and the doctor-roll bed is seated therein, the bed including two lateral lugs which externally reach around the legs of the U-shaped portion of the mount.
References Cited (Backward Citations)
US3817208A
Cited
US4282826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |