US4041897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cascade coater
Assignee: Ilford Imaging Switzerland GmbH
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Filing: 1976-05-10
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Granted: 1977-08-16
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Expires: 1996-05-10
Abstract
Abstract A cascade coater having a slideway and extending therein a slot which widens in the downstream direction as it meets the associated slideway. The slot is formed by upstream and downstream boundary walls, the downstream wall joining with a flat face angled with respect to that wall and the surface of the slideway or being curved to meet the slideway. The upstream and downstream surfaces of the slideway can lie in the same plane or different planes which are parallel and spaced apart by a distance of about 1 mm.
Inventors
- 👤 Frank Ade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:12
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/46; D21H23/48; B; B05; B05C; B05C5/00; B05C5/007; B05C5/008; D21H5/00; D21H5/0005; D21H5/0042; D21H5/0045; G; G03; G03C; G03C1/00; G03C1/74; B05C9/00; B05C9/06; G03C2001/7433; G03C2001/7466; G03C2001/7492; Y; Y10; Y10S; Y10S118/00; Y10S118/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
A cascade coater having at least one slideway and, extending thereinto, an associated feed slot having an upstream and a downstream boundary wall, the upstream boundary wall terminating in an edge parallel to the associated slideway, whereas the downstream boundary wall of the slot has a face between said boundary wall and the associated slideway at an angle of from approximately 100° to 170°, with the slideway and the face length as measured in a plane perpendicular to the slideway and to the downstream boundary wall being at least 0.5 mm and at most 5 mm.
Claim 2
Dependent Claim
96 words
A cascade coater having at least one slideway and, extending thereinto, an associated feed slot having an upstream and a downstream boundary wall, the upstream boundary wall terminating in an edge parallel to the associated slideway, whereas the downstream boundary wall of the slot has a face between said boundary wall and the associated slideway at an angle of from approximately 100° to 170°, with the slideway and the face length as measured in a plane perpendicular to the slideway and to the downstream boundary wall being at least 0.5 mm and at most 5 mm.
Claim 3
Dependent Claim
15 words
A coater according to claim 1, wherein the face length is at least 1.0 mm.
Claim 4
Dependent Claim
36 words
A coater according to claim 1, wherein the distance between a plane in which said edge of the upstream boundary wall lies and a plane in which lies said associated slideway is at most 0.1 mm.
Claim 5
Dependent Claim
35 words
A coater according to claim 1, including at least two slideways with one feed slot each, the downstream boundary wall of each feed slot having a face between said boundary wall and the associated slideway.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |