US3375767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera bellows and method of construction
Assignee: Polaroid Corp
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Filing: 1966-01-07
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Granted: 1968-04-02
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Expires: 1986-01-07
Abstract
No abstract record available.
Inventors
- 👤 Albert J Hanlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:16
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/04; G03B17/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN EXPANSIBLE AND COLLAPSIBLE BELLOWS ADAPTED TO FORM A LIGHT-TIGHT PATH BETWEEN THE LENS AND FILM PLANE OF A PHOTOGRAPHIC CAMERA, SAID BELLOWS COMPRISING, IN COMBINATION: (A) A HOLLOW, FOUR-SIDED BODY PORTION HAVING A SUBSTANTIALLY RECTANGULAR CROSS SECTION AND OPEN FRONT AND REAR ENDS; (B) A PLURALITY OF FOLD LINES EXTENDING IN PARALLEL RELATION TRANSVERSELY ALONG EACH OF SAID SIDES AND COOPERATIVELY ARRANGED TO ALLOW AXIAL RELATIVE MOVEMENT OF SAID FRONT AND REAR ENDS; (C) A PAIR OF RIGID FRAMES HAVING BOUNDING EDGES EXTENDING, RESPECTIVELY, AROUND THE PERIPHERIES OF SAID FRONT AND REAR ENDS; (D) SAID BODY PORTION BEING FORMED OF A LAMINATED SHEET MATERIAL HAVING AT LEAST THREE LAYERS;
Claim 2
Dependent Claim
110 words
AN EXPANSIBLE AND COLLAPSIBLE BELLOWS ADAPTED TO FORM A LIGHT-TIGHT PATH BETWEEN THE LENS AND FILM PLANE OF A PHOTOGRAPHIC CAMERA, SAID BELLOWS COMPRISING, IN COMBINATION: (A) A HOLLOW, FOUR-SIDED BODY PORTION HAVING A SUBSTANTIALLY RECTANGULAR CROSS SECTION AND OPEN FRONT AND REAR ENDS; (B) A PLURALITY OF FOLD LINES EXTENDING IN PARALLEL RELATION TRANSVERSELY ALONG EACH OF SAID SIDES AND COOPERATIVELY ARRANGED TO ALLOW AXIAL RELATIVE MOVEMENT OF SAID FRONT AND REAR ENDS; (C) A PAIR OF RIGID FRAMES HAVING BOUNDING EDGES EXTENDING, RESPECTIVELY, AROUND THE PERIPHERIES OF SAID FRONT AND REAR ENDS; (D) SAID BODY PORTION BEING FORMED OF A LAMINATED SHEET MATERIAL HAVING AT LEAST THREE LAYERS;
References Cited (Backward Citations)
US3191513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |