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US4125851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film processor
Assignee: Individual
•
Filing: 1976-06-28
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Granted: 1978-11-14
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Expires: 1996-06-28
Abstract
Abstract In a system for transporting photographic film through a series of processing tanks having a plurality of successive pairs of driven rollers. One of the rollers of each pair has a resilient stocking covering which scrubs the emulsion side of the film.
Inventors
- 👤 Vivian D. Krehbiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:55
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
An apparatus for transporting photographic film in a chemical solution comprising a pair of parallel spaced rollers in contacting relation, at least one of said rollers including a cylindrical member having concentric circular cavities in each end thereof, a plug means for insertion into each of said end cavities and having circular portions with a diameter less than the diameter of said end cavities, and a tubular-shaped stocking member surrounding said cylindrical member with its free ends releasably held in said end cavities by said plug means and said rollers being rigidly positioned such that said stocking covered roller is depressed along its line of contact with its companion roller to cause a scrubbing action to take place on said film passing between said rollers.
Claim 2
Independent Claim
125 words
An apparatus for transporting photographic film in a chemical solution comprising a pair of parallel spaced rollers in contacting relation, at least one of said rollers including a cylindrical member having concentric circular cavities in each end thereof, a plug means for insertion into each of said end cavities and having circular portions with a diameter less than the diameter of said end cavities, and a tubular-shaped stocking member surrounding said cylindrical member with its free ends releasably held in said end cavities by said plug means and said rollers being rigidly positioned such that said stocking covered roller is depressed along its line of contact with its companion roller to cause a scrubbing action to take place on said film passing between said rollers.
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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) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |