Patent US4255039A successfully refreshed from Google Patents.
US4255039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film and paper processing equipment
Assignee: BARCLAYS BUSINESS CREDIT Inc
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Filing: 1979-09-12
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Granted: 1981-03-10
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Expires: 1999-09-12
Abstract
Abstract Equipment is provided for processing of photographic film and paper using roller transport systems which transport the photographic film and paper through a succession of processing tanks with liquids therein for processing and in which the respective liquids are agitated simultaneously with the operation of the transport systems by agitators within the tanks.
Inventors
- 👤 Henry F. Hope
- 👤 Stephen F. Hope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:53
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/132
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material, a roller transport rack mounted in said tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank comprising a rotatable bladed impeller, and power input means for driving said agitating means, said power input means including a power input shaft, and an additional shaft connected to and driven by said power input shaft, driving means interposed between said additional shaft and said impeller, said driving means determining the speed of rotation of said impeller.
Claim 2
Dependent Claim
106 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material, a roller transport rack mounted in said tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank comprising a rotatable bladed impeller, and power input means for driving said agitating means, said power input means including a power input shaft, and an additional shaft connected to and driven by said power input shaft, driving means interposed between said additional shaft and said impeller, said driving means determining the speed of rotation of said impeller.
Claim 3
Dependent Claim
106 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material, a roller transport rack mounted in said tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank comprising a rotatable bladed impeller, and power input means for driving said agitating means, said power input means including a power input shaft, and an additional shaft connected to and driven by said power input shaft, driving means interposed between said additional shaft and said impeller, said driving means determining the direction of rotation of said impeller.
Claim 4
Dependent Claim
106 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material, a roller transport rack mounted in said tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank comprising a rotatable bladed impeller, and power input means for driving said agitating means, said power input means including a power input shaft, and an additional shaft connected to and driven by said power input shaft, driving means interposed between said additional shaft and said impeller, said driving means determining the direction of rotation of said impeller.
Claim 5
Dependent Claim
102 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material, a roller transport rack mounted in said tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank comprising a rotatable bladed impeller, and power input means for driving said agitating means, said power input means including a power input shaft, and an additional shaft connected to and driven by said power input shaft, driving means interposed between said additional shaft and said impeller, said driving means comprising a driving belt.
Claim 6
Dependent Claim
102 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material, a roller transport rack mounted in said tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank comprising a rotatable bladed impeller, and power input means for driving said agitating means, said power input means including a power input shaft, and an additional shaft connected to and driven by said power input shaft, driving means interposed between said additional shaft and said impeller, said driving means comprising a driving belt.
Claim 7
Dependent Claim
102 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material, a roller transport rack mounted in said tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank comprising a rotatable bladed impeller, and power input means for driving said agitating means, said power input means including a power input shaft, and an additional shaft connected to and driven by said power input shaft, driving means interposed between said additional shaft and said impeller, said driving means comprising a driving chain.
Claim 8
Dependent Claim
102 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material, a roller transport rack mounted in said tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank comprising a rotatable bladed impeller, and power input means for driving said agitating means, said power input means including a power input shaft, and an additional shaft connected to and driven by said power input shaft, driving means interposed between said additional shaft and said impeller, said driving means comprising a driving chain.
Claim 9
Dependent Claim
145 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material which tank has a bottom wall, a roller transport rack mounted in said tank for moving the photographic material downwardly and then upwardly in the tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank, said agitating means including a vertical shaft and a rotatable bladed impeller mounted on said shaft and horizontally disposed on said shaft in spaced relation to the bottom wall of the tank, and power input means for driving said agitating means, said power input means comprising a vertical power input shaft extending downwardly within said tank, said first mentioned vertical shaft being parallel to said vertical power input shaft, and driving connections are provided between said vertical shafts.
Claim 10
Dependent Claim
145 words
In photographic material processing equipment that includes at least one tank for containing a liquid for processing photographic material which tank has a bottom wall, a roller transport rack mounted in said tank for moving the photographic material downwardly and then upwardly in the tank, and power input means for driving said rack, the improvement which comprises liquid agitating means in the lower part of said tank, said agitating means including a vertical shaft and a rotatable bladed impeller mounted on said shaft and horizontally disposed on said shaft in spaced relation to the bottom wall of the tank, and power input means for driving said agitating means, said power input means comprising a vertical power input shaft extending downwardly within said tank, said first mentioned vertical shaft being parallel to said vertical power input shaft, and driving connections are provided between said vertical shafts.
Claim 11
Dependent Claim
23 words
The combination defined in claim 5 in which said vertical power input shaft and said first mentioned vertical shaft have driving gears therebetween.
References Cited (Backward Citations)
US3133490A
Cited
US3532048A
Cited
US3538836A
Cited
US3760705A
Cited
US4026451A
Cited
US4156569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |