US4867097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End dam
Assignee: Union Camp Corp
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Filing: 1988-06-15
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Granted: 1989-09-19
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Expires: 2008-06-15
Abstract
Abstract An end dam for use in a coater head which applies a coating material under pressure from a reservoir onto a web is shown to include an attachment arrangement for attaching the end dam to the coater head a first wall which prevents the lateral movement of the coating material, thereby defining one end of the reservoir, a second wall, spaced from the first wall and laterally away from the reservoir, such that a channel is formed therebetween so that coating material passing over the first wall experiences a drop in pressure sufficient to maintain the coating material within the channel.
Inventors
- 👤 John R. Foltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:21
CPC Classifications
B; B05; B05C; B05C11/00; B05C11/02; B05C11/04; B05C11/047; D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/32; D21H23/34; D21H23/36
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
An end dam for use in a coater head which applies a coating material under pressure in a reservoir onto a web, said end dam comprising: attachment means for attaching said end dam to said coater head; a first wall for preventing the lateral movement of said coating material; a second wall, spaced from said first wall and laterally away from said reservoir, such that a channel is formed therebetween so that coating material passing over said first wall experiences a drop in said pressure sufficient to maintain said coating material within said channel the end dam being entirely of foam rubber and having but a single said channel.
Claim 2
Dependent Claim
109 words
An end dam for use in a coater head which applies a coating material under pressure in a reservoir onto a web, said end dam comprising: attachment means for attaching said end dam to said coater head; a first wall for preventing the lateral movement of said coating material; a second wall, spaced from said first wall and laterally away from said reservoir, such that a channel is formed therebetween so that coating material passing over said first wall experiences a drop in said pressure sufficient to maintain said coating material within said channel the end dam being entirely of foam rubber and having but a single said channel.
Claim 3
Dependent Claim
28 words
The end dam of claim 1, extending wherein said attachment means comprises a groove formed in said end dam for attaching said end dam to said coater head.
Claim 4
Dependent Claim
38 words
The end dam of claim 1, wherein said first and second walls include a top surface and wherein said top surface is formed to conform to the shape of said web in the region of said coater head.
Claim 5
Dependent Claim
17 words
The end dam of claim 1, wherein said end dam is integrally formed from said foam rubber.
Claim 6
Dependent Claim
15 words
The coater head of claim 1, wherein each of said end dams is integrally formed.
Claim 7
Dependent Claim
136 words
A coater head for use in applying a coating material under pressure from a reservoir onto a web, comprising, a body member having said reservoir formed therein, said reservoir being defined by a blade, a baffle and a pair of opposed end dams, each of said end dams comprising, attachment means for attaching said end dams to said coater head, a first wall defining one end of said reservoir, a second wall, spaced from said first wall and laterally away from said reservoir, such that a channel is formed between said first and second walls so that coating material passing over said first wall experiences a drop in said pressure sufficient to maintain said coating material within said channel, said end dams being entirely of foam rubber and each having but a single said channel therein.
Claim 8
Dependent Claim
136 words
A coater head for use in applying a coating material under pressure from a reservoir onto a web, comprising, a body member having said reservoir formed therein, said reservoir being defined by a blade, a baffle and a pair of opposed end dams, each of said end dams comprising, attachment means for attaching said end dams to said coater head, a first wall defining one end of said reservoir, a second wall, spaced from said first wall and laterally away from said reservoir, such that a channel is formed between said first and second walls so that coating material passing over said first wall experiences a drop in said pressure sufficient to maintain said coating material within said channel, said end dams being entirely of foam rubber and each having but a single said channel therein.
Claim 9
Dependent Claim
47 words
The coater head of claim 6, wherein said coater head includes a projection extending into said reservoir and wherein said attachment means comprises a groove formed in each of said end dams for attaching said end dams to said projection, thereby defining opposite ends of said reservoir.
Claim 10
Dependent Claim
38 words
The coater head of claim 6, wherein said first and second walls include a top surface and wherein said top surface is formed to conform to the shape of said web in the region of said coated head.
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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) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |