US3147685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-applying structure for distributing processing fluid
Assignee: Polaroid Corp
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Filing: 1961-05-26
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Granted: 1964-09-08
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Expires: 1981-05-26
Abstract
No abstract record available.
Inventors
- 👤 Joel A Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:23
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/48; G03B17/50; G03B17/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN PHOTOGRAPHIC APPARATUS FOR PROCESSING PHOTOSENSITIVE MATERIALS, MEANS FOR DISTRIBUTING A PHOTOGRAPHIC PROCESSING FLUID BETWEEN A PAIR OF SUPERPOSED SHEETS, AND MEANS COMPRISING, IN COMBINATION, A PAIR OF SPACED SUPPORTS, A FIRST CANTILEVER SPRING MOUNTED ON ONE OF SAID SUPPORTS AND EXTENDING TOWARD THE OTHER OF SAID SUPPORTS, A SECOND CANTILEVER SPRING MOUNTED ON SAID OTHER SUPPORT AND EXTENDING TOWARD SAID ONE SUPPORT, SAID CANTILEVER SPRINGS BEING BIASED TOWARD ONE ANOTHER, A FIRST SHEET-ENGAGING MEMBER MOUNTED ON SAID FIRST CANTILEVER SPRING AND CONSTRAINED AGAINST MOVEMENT IN ANY PLANE RELATIVE TO SAID FIRST CANTILEVER SPRING, A SECOND SHEETENGAGING MEMBER MOUNTED ON SAID SECOND CANTILEVER SPRING IN JUXTAPOSITION WITH SAID FIRST SHEET-ENGAGING MEMBER AND CONSTRAINED AGAINST MOVEMENT IN ANY PLANE RELATIVE TO SAID SECOND CANTILEVER SPRING, SAID SHEET-
Claim 2
Dependent Claim
126 words
IN PHOTOGRAPHIC APPARATUS FOR PROCESSING PHOTOSENSITIVE MATERIALS, MEANS FOR DISTRIBUTING A PHOTOGRAPHIC PROCESSING FLUID BETWEEN A PAIR OF SUPERPOSED SHEETS, AND MEANS COMPRISING, IN COMBINATION, A PAIR OF SPACED SUPPORTS, A FIRST CANTILEVER SPRING MOUNTED ON ONE OF SAID SUPPORTS AND EXTENDING TOWARD THE OTHER OF SAID SUPPORTS, A SECOND CANTILEVER SPRING MOUNTED ON SAID OTHER SUPPORT AND EXTENDING TOWARD SAID ONE SUPPORT, SAID CANTILEVER SPRINGS BEING BIASED TOWARD ONE ANOTHER, A FIRST SHEET-ENGAGING MEMBER MOUNTED ON SAID FIRST CANTILEVER SPRING AND CONSTRAINED AGAINST MOVEMENT IN ANY PLANE RELATIVE TO SAID FIRST CANTILEVER SPRING, A SECOND SHEETENGAGING MEMBER MOUNTED ON SAID SECOND CANTILEVER SPRING IN JUXTAPOSITION WITH SAID FIRST SHEET-ENGAGING MEMBER AND CONSTRAINED AGAINST MOVEMENT IN ANY PLANE RELATIVE TO SAID SECOND CANTILEVER SPRING, SAID SHEET-
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |