Patent US3633474A successfully refreshed from Google Patents.
US3633474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera door latch
Assignee: Polaroid Corp
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Filing: 1970-05-01
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Granted: 1972-01-11
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Expires: 1990-05-01
Abstract
Abstract A camera of the extensible type including a housing having a plurality of sections adapted for movement between a compact, inoperative position wherein components of the camera are located near the camera''s film loading door and an extended, operative position wherein the components are moved away from the film loading door. The film loading door is coupled to one of the sections by a magnetic coupling and a release is provided for breaking the magnetic coupling to allow opening of the film loading door. A detent is mounted on the door and is adapted to move from a first position wherein it renders the release inoperative to break the magnetic coupling to a second position which renders the release operative as the sections of the camera move into the extended, operative position, thereby insuring that the components are moved away from the film loading door prior to its opening to reduce the possibility of damage to the components when an object is inserted into the film loading door opening.
Inventors
- 👤 Irving Erlichman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:53
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/48; G03B17/50; G03B17/52
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
154 words
PHotographic apparatus comprising, in combination: a housing having a plurality of sec tons including a first section having support means for supporting a photosensitive element in position for exposure and at least a second section movably coupled to said first section for movement between an extended, operative position and a compact, inoperative position; closure means forming at least a portion of said first section, said closure means being movable between open and closed positions to permit loading of a photosensitive element into position with said support means; first means for coupling said closure means to a portion of said first section; second means for uncoupling said first means from said portion of said first section, said second means being engageable by the user in both the extended, operative position and the compact, inoperative position; and third means for rendering said second means operative only when said sections are out of said compact, inoperative position.
Claim 2
Dependent Claim
154 words
PHotographic apparatus comprising, in combination: a housing having a plurality of sec tons including a first section having support means for supporting a photosensitive element in position for exposure and at least a second section movably coupled to said first section for movement between an extended, operative position and a compact, inoperative position; closure means forming at least a portion of said first section, said closure means being movable between open and closed positions to permit loading of a photosensitive element into position with said support means; first means for coupling said closure means to a portion of said first section; second means for uncoupling said first means from said portion of said first section, said second means being engageable by the user in both the extended, operative position and the compact, inoperative position; and third means for rendering said second means operative only when said sections are out of said compact, inoperative position.
Claim 3
Dependent Claim
39 words
Photographic apparatus as defined in claim 1 further including fourth means for automatically moving said third means to a position which renders said second means operative when said first and second sections are moved into said extended, operative position.
Claim 4
Dependent Claim
20 words
Photographic apparatus as defined in claim 2 wherein said third means is mounted on said closure means for movement therewith.
Claim 5
Dependent Claim
20 words
Photographic apparatus as defined in claim 3 further including resilient means for coupling said closure means to said first section.
Claim 6
Dependent Claim
32 words
Photographic apparatus as defined in claim 4 where in said fourth means spaces said closure means from said first means as said first and second sections move toward the extended, operative -position.
Claim 7
Dependent Claim
14 words
Photographic apparatus as defined in claim 5 wherein said first means includes a magnet.
Claim 8
Dependent Claim
54 words
Photographic apparatus as defined in claim 6 wherein said second means is coupled to said first section and is adapted to break the magnetic coupling between said magnet and said portion of said first section to allow opening of said closure means when said first and second sections are in the extended, operative position.
Claim 9
Dependent Claim
42 words
Photographic apparatus as defined in claim 7 wherein said resilient means returns said third means to a position which renders said second means inoperative to break said magnetic coupling when said first and second sections are moved into the compact, inoperative position.
Claim 10
Dependent Claim
45 words
Photographic apparatus as defined in claim 1 further including a component coupled to said second section for movement therewith, whereby loading of a photosensitive element into position with said support means is possible only when said component has been moved away from said support means.
Claim 11
Dependent Claim
14 words
Photographic apparatus as defined in claim 9 wherein said component is a reflecting means.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |