Patent US4104671A successfully refreshed from Google Patents.
US4104671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic printing and developing tray
Assignee: Individual
•
Filing: 1976-01-15
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Granted: 1978-08-01
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Expires: 1996-01-15
Abstract
Abstract The developing solution is carried in a special print tray which holds the print paper on a first planar surface which is above the surface of the developing fluid when the cover is open. When the cover is closed a displacement member forces fluid over the print paper and against a planar transparent second surface which is parallel and spaced from the first surface.
Inventors
- 👤 Roy M. Harrigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:57
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
A tray for photographic printing and developing which comprises: a lower member having a generally planar horizontal first surface and a reservoir section disposed with the bottom thereof at a lower elevation than said planar horizontal first surface; and a cover cooperating with said lower member and having a transparent generally planar second surface disposed in generally parallel, spaced, overlapping relationship to said first generally planar surface when said cover is positioned on said lower member, said cover further including a depending displacement member extending into said reservoir section when said cover is positioned on said lower section to displace liquid located therein to a position intermediate said first and second generally planar surfaces, said displacement member being withdrawn from said reservoir section when said cover is moved away from said lower member to allow liquid intermediate said first and second surfaces to flow into said reservoir section.
Claim 2
Dependent Claim
148 words
A tray for photographic printing and developing which comprises: a lower member having a generally planar horizontal first surface and a reservoir section disposed with the bottom thereof at a lower elevation than said planar horizontal first surface; and a cover cooperating with said lower member and having a transparent generally planar second surface disposed in generally parallel, spaced, overlapping relationship to said first generally planar surface when said cover is positioned on said lower member, said cover further including a depending displacement member extending into said reservoir section when said cover is positioned on said lower section to displace liquid located therein to a position intermediate said first and second generally planar surfaces, said displacement member being withdrawn from said reservoir section when said cover is moved away from said lower member to allow liquid intermediate said first and second surfaces to flow into said reservoir section.
Claim 3
Dependent Claim
37 words
The apparatus as described in claim 1 further including an upstanding flange extending about said first generally planar surface and said reservoir section to a height above said second generally planar surface when said cover is installed.
Claim 4
Dependent Claim
16 words
The apparatus as described in claim 2 wherein said cover is hinged to said lower member.
Claim 5
Dependent Claim
18 words
The apparatus as described in claim 2 further including a magnetic latch for holding said cover in place.
Claim 6
Dependent Claim
78 words
The apparatus as described in claim 2 wherein said first generally planar surface includes a region which when cooperating with a piece of print paper is covered by the associated print paper, said region having a plurality of holes extending through said first generally planar surface, said apparatus further includes a pump having an inlet and an outlet, said inlet being connected to said region and said outlet side of said pump being connected to said reservoir section.
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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) | 1981-07-31 | 1982-01-30 | 1982-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-31 | 1986-01-30 | 1986-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-31 | 1990-01-30 | 1990-08-01 | $7700.00 | Window Closed / Lapsed |