US3905534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic processing machine with oppositely canted transport roller
Assignee: Pako Corp
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Filing: 1974-08-01
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Granted: 1975-09-16
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Expires: 1994-08-01
Abstract
Abstract This is a photographic processor having a plurality of pairs of cylindrical film transport rollers, the rollers in each pair being parallel to each other but adjacent pairs being respectively canted in opposite directions to produce a zigzag path for the marginal edge portions of the web being transported to limit the area of contact between said web and the rollers to the marginal edge portions of the web.
Inventors
- 👤 Conrad E Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:23
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/26; B65H20/00; B65H20/02; G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/132
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
140 words
In a photographic processor, a mechanism for transporting elongated webs of photographic sheet material through the processor, said transport mechanism comprising: a roller supporting structure, a plurality of pairs of cylindrical transport rollers mounted on said structure and arranged to define a continuous web path through the processor, the spacing between the rolLers of each pair being greater than the thickness of the web to be transported and the rollers of each pair being parallel to each other, adjacent rollers being oppositely canted to produce a zigzag path for the marginal edge portions of a web of material being transported through said rollers and limit the contact between the web and the rollers to only the marginal edge portions of the web, and means for driving said rollers to transport a web through the processor along the desired path therein.
Claim 2
Dependent Claim
140 words
In a photographic processor, a mechanism for transporting elongated webs of photographic sheet material through the processor, said transport mechanism comprising: a roller supporting structure, a plurality of pairs of cylindrical transport rollers mounted on said structure and arranged to define a continuous web path through the processor, the spacing between the rolLers of each pair being greater than the thickness of the web to be transported and the rollers of each pair being parallel to each other, adjacent rollers being oppositely canted to produce a zigzag path for the marginal edge portions of a web of material being transported through said rollers and limit the contact between the web and the rollers to only the marginal edge portions of the web, and means for driving said rollers to transport a web through the processor along the desired path therein.
Claim 3
Dependent Claim
60 words
The structure set forth in claim 1 and said roller supporting structure comprising, a pair of spaced apart mounting plates with each roller extending therebetween and having the roller ends journaled for rotation on the respective plates, the canted relation of the rollers being produced by orienting the axes thereof in oblique relation to the planes of said mounting plates.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |