US3552292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic processing apparatus
Assignee: Polaroid Corp
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Filing: 1968-04-22
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Granted: 1971-01-05
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Expires: 1988-04-22
Abstract
Abstract Apparatus for applying an accurately predetermined quantity of a liquid processing agent uniformly to successive exposed areas of photosensitive sheet material. The apparatus includes an applicator roll with a grooved surface rotated in a liquidcontaining well and the sheet material is moved upwardly at an angle in contact with the oppositely moving surface of the roll to form a meniscus of the liquid between the roll surface and the sheet material. One side of the well is higher than the other and includes a cylindrical surface cooperating with the roll surface to form a throat for controlling the quantity of liquid carried upwardly by the roll through the throat into contact with the sheet.
Inventors
- 👤 Nicholas Gold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:25
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/06; G03D5/067
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
Apparatus as defined in claim 1 including guide means mounted on said body means and located between said roll and said cover for guiding sheet material entering through one of said passages around a portion of said periphery of said roll through said passage on the opposite side of said well.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |