Patent US882811A successfully refreshed from Google Patents.
Patent US3733992A successfully refreshed from Google Patents.
US3733992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for processing photographic material
Assignee: Agfa Gevaert NV
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Filing: 1971-09-01
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Granted: 1973-05-22
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Expires: 1991-09-01
Abstract
Abstract In a wet processing apparatus for photographic material wherein the material is guided at least partially through and out of a body of processing liquid by a guide plate having a grooved surface and extending upwardly from below the liquid level to an egress end above the liquid level, a plurality of openings are formed in the plate intermediate the liquid level and egress end, with each opening communicating with at least one groove, to permit the overflow of the liquid therethrough. Preferably, an anti-siphon passageway connects each such opening with the atmosphere.
Inventors
- 👤 E Stievenart
- 👤 H Verbruggen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:08
CPC Classifications
B; B23; B23D; B23D1/00; B23D1/20; B23D1/26; G; G03; G03D; G03D13/00; G03D13/003; G03D3/00; G03D3/02; G03D3/06; G03D3/08; G03D3/13; G03D3/132
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
143 words
Apparatus for processing photographic sheet material comprising: 1. a container for holding processing liquid, 2. means for keeping said container filled with liquid up to a predetermined level, 3. a guide plate in said container for guiding said material at least partially through said container and extending upwardly from a locus below the liquid level to an egress end spaced above the liquid level, said plate being formed with grooves therein and having a plurality of openings therethrough intermediate said liquid level and said egress end, each of said openings being in communication with at least one of said grooves, whereby liquid can overflow through said openings below the egress plate end, 4. means for advancing said sheet material through the container, and 5. immersion for constraining such sheet material to follow the Guide plate at least over the upwardly extending portion thereof.
Claim 2
Dependent Claim
143 words
Apparatus for processing photographic sheet material comprising: 1. a container for holding processing liquid, 2. means for keeping said container filled with liquid up to a predetermined level, 3. a guide plate in said container for guiding said material at least partially through said container and extending upwardly from a locus below the liquid level to an egress end spaced above the liquid level, said plate being formed with grooves therein and having a plurality of openings therethrough intermediate said liquid level and said egress end, each of said openings being in communication with at least one of said grooves, whereby liquid can overflow through said openings below the egress plate end, 4. means for advancing said sheet material through the container, and 5. immersion for constraining such sheet material to follow the Guide plate at least over the upwardly extending portion thereof.
Claim 3
Dependent Claim
13 words
means for keeping said container filled with liquid up to a predetermined level,
Claim 4
Dependent Claim
13 words
means for keeping said container filled with liquid up to a predetermined level,
Claim 5
Dependent Claim
25 words
Apparatus according to claim 1 wherein said grooves are inclined transversely to the line of motion of a sheet of photographic material through the container.
Claim 6
Dependent Claim
15 words
Apparatus according to claim 1 wherein said openings are in the form of circular holes.
Claim 7
Dependent Claim
83 words
a guide plate in said container for guiding said material at least partially through said container and extending upwardly from a locus below the liquid level to an egress end spaced above the liquid level, said plate being formed with grooves therein and having a plurality of openings therethrough intermediate said liquid level and said egress end, each of said openings being in communication with at least one of said grooves, whereby liquid can overflow through said openings below the egress plate end,
Claim 8
Dependent Claim
83 words
a guide plate in said container for guiding said material at least partially through said container and extending upwardly from a locus below the liquid level to an egress end spaced above the liquid level, said plate being formed with grooves therein and having a plurality of openings therethrough intermediate said liquid level and said egress end, each of said openings being in communication with at least one of said grooves, whereby liquid can overflow through said openings below the egress plate end,
Claim 9
Dependent Claim
10 words
means for advancing said sheet material through the container, and
Claim 10
Dependent Claim
10 words
means for advancing said sheet material through the container, and
Claim 11
Dependent Claim
50 words
Apparatus according to claim 3 wherein anti-siphoning air passages are provided adjacent the egress end of said guide plate, said passages communicating at one end with the atmosphere at a level above said holes and at the other with said holes to prevent the siphoning of liquid through said holes.
Claim 12
Dependent Claim
26 words
Apparatus according to claim 4 wherein said air passages are formed by terminal grooves extending from said holes to the egress end of the guide plate.
Claim 13
Dependent Claim
19 words
immersion for constraining such sheet material to follow the Guide plate at least over the upwardly extending portion thereof.
Claim 14
Dependent Claim
19 words
immersion for constraining such sheet material to follow the Guide plate at least over the upwardly extending portion thereof.
Claim 15
Dependent Claim
24 words
Apparatus according to claim 4 wherein said air passages are formed by slots extending from said holes to the egress end of the plate.
Claim 16
Dependent Claim
18 words
Apparatus according to claim 6 wherein said slots are tapered toward the egress end of the guide plate.
Claim 17
Dependent Claim
29 words
Apparatus according to claim 1 wherein said openings are formed by the lower end of a series of notches extending from the egress plate end toward the liquid level.
Claim 18
Dependent Claim
18 words
Apparatus according to claim 8 wherein said notches increase in width towards the egress end of the plate.
Claim 19
Dependent Claim
15 words
Apparatus according to claim 1 wherein said grooves communicate with said openings through branch grooves.
Claim 20
Dependent Claim
18 words
Apparatus according to claim 1 wherein a receptacle is provided for collecting liquid discharging through the liquid-overflow openings.
Claim 21
Dependent Claim
14 words
Apparatus according to claim 1 wherein said guide plate has a generally concave curvature.
Claim 22
Dependent Claim
13 words
Apparatus according to claim 1 wherein only selected grooves communicate with said openings.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |