Patent US5232632A successfully refreshed from Google Patents.
Patent US4616915A successfully refreshed from Google Patents.
US4616915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion type film processing apparatus
Assignee: Polaroid Corp
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Filing: 1984-11-30
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Granted: 1986-10-14
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Expires: 2004-11-30
Abstract
Abstract There is disclosed a film processing apparatus having a container for fluid of the type for processing film units. Connected to the container is a sealing and transporting assembly which includes a pair of pressure-applying and sealing rollers that are operable to seal fluid in the container and transport the film into and out of the container.
Inventors
- 👤 Philip R. Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:57
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
174 words
Photographic processing apparatus comprising: a plurality of elongated wall members connected together to define an elongated open ended space adapted to accommodate an exposed photographic film unit therein; and means for cooperating with said wall members adjacent said open end of said space defined thereby to effect a fluid seal thereat, thereby facilitating the retention of a reservoir of photographic film processing fluid within said space, and for selectively advancing an exposed fluid treated, processed film unit from said fluid containing space, said fluid seal effecting and fluid unit advancing means comprising a pair of elongated rollers disposed in parallel relationship, each of said rollers including a resiliently flexible peripheral surface portion, which two said peripheral surface portions being disposed in engagement one with the other and which further are configured to substantially exclusively engage said wall members to provide both a static and a dynamic fluid seal adjacent said open end of said space, said rollers when actuated adapted to withdraw therebetween a fluid treated, processed film unit from said fluid containing space.
Claim 2
Dependent Claim
174 words
Photographic processing apparatus comprising: a plurality of elongated wall members connected together to define an elongated open ended space adapted to accommodate an exposed photographic film unit therein; and means for cooperating with said wall members adjacent said open end of said space defined thereby to effect a fluid seal thereat, thereby facilitating the retention of a reservoir of photographic film processing fluid within said space, and for selectively advancing an exposed fluid treated, processed film unit from said fluid containing space, said fluid seal effecting and fluid unit advancing means comprising a pair of elongated rollers disposed in parallel relationship, each of said rollers including a resiliently flexible peripheral surface portion, which two said peripheral surface portions being disposed in engagement one with the other and which further are configured to substantially exclusively engage said wall members to provide both a static and a dynamic fluid seal adjacent said open end of said space, said rollers when actuated adapted to withdraw therebetween a fluid treated, processed film unit from said fluid containing space.
Claim 3
Dependent Claim
88 words
The apparatus of claim 1 wherein said open end of said space defined by said elongated wall members is substantially rectangular in cross section and each said roller comprises a rotatably mounted shaft with its said peripheral surface portion extending to engage opposed said wall members in a fluid-tight manner with ends of the other opposed said wall members respectively engaging the circumferential edges of said peripheral surface portions of said rollers in a fluid-tight manner and to scrape said peripheral surface portions so as to remove fluid.
Claim 4
Dependent Claim
42 words
The apparatus of claim 1 wherein said peripheral surface portions of said rollers are formed of a relatively flexible and resilient material thereby functioning as a squeegee to remove excess fluid from a fluid treated, processed film unit as it passes therebetween.
Claim 5
Dependent Claim
134 words
The apparatus of claim 1 wherein said elongated wall members further define a second open end of said space disposed a given distance from its said firstmentioned open end and additionally including second means for cooperating with said wall members adjacent said second open end of said space defined thereby to effect a fluid seal thereat and for selectively advancing an exposed film unit into said space, said second means including a second pair of elongated rollers disposed in parallel relationship and spaced from said first-mentioned pair of rollers a distance less than the length of the film unit so that the leading edge of the film unit may be introduced into the bite of said first-mentioned pair of rollers prior to its trailing edge leaving the bite of said second pair of rollers.
References Cited (Backward Citations)
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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) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |