US4131356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet film processor
Assignee: CUBIC PRODUCTRON Inc
•
Filing: 1975-05-02
•
Granted: 1978-12-26
•
Expires: 1995-05-02
Abstract
Abstract A film processor of the type which includes a sheet transport having a finger pushing the rear edge of the film sheet while edge guides guide the edges of the film along a path that leads down into each of a series of tanks and up out of each tank in a loop over to the next tank, including a loop guide at the end of each loop for guiding the middle of the film sheet around the loop. The loop guide includes a pair of guide plates lying near the center of the film path on either side of a finger-moving belt, each plate having a concave surface extending along the radially outside portion of a loop to guide the leading edge of a film sheet which tends to bow outwardly as the sheet moves along a curve.
Inventors
- 👤 Gunter Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:22
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
147 words
Apparatus for processing a sheet of film by moving it through tanks containing processing solutions comprising: means defining a sheet path which includes a plurality of loop portions, each leading down into and up out of one of said tanks, said means comprising a pair of parallel edge guide means extending along said path for engaging opposite side edge portions of said sheet of film; a plurality of push fingers; a plurality of support fingers; and belt means for moving each of said push and support fingers along at least one of said loop portions to push sheets of film therealong; each of said push fingers being movable with respect to said belt means, and each of said support fingers located immediately behind one of said push fingers along the length of said path, to stop the downward fall of a film sheet onto a push finger.
Claim 2
Dependent Claim
147 words
Apparatus for processing a sheet of film by moving it through tanks containing processing solutions comprising: means defining a sheet path which includes a plurality of loop portions, each leading down into and up out of one of said tanks, said means comprising a pair of parallel edge guide means extending along said path for engaging opposite side edge portions of said sheet of film; a plurality of push fingers; a plurality of support fingers; and belt means for moving each of said push and support fingers along at least one of said loop portions to push sheets of film therealong; each of said push fingers being movable with respect to said belt means, and each of said support fingers located immediately behind one of said push fingers along the length of said path, to stop the downward fall of a film sheet onto a push finger.
Claim 3
Dependent Claim
30 words
The apparatus described in claim 1 wherein: each of said push fingers is pivotally mounted on said belt means and has a concave end portion facing forwardly along said path.
References Cited (Backward Citations)
US2538270A
Cited
US2927503A
Cited
US2980006A
Cited
US3072310A
Cited
US3435749A
Cited
US3559554A
Cited
US3678842A
Cited
US3712206A
Cited
US3769897A
Cited
US3882525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |