Patent US4720722A successfully refreshed from Google Patents.
US4720722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back lid of a camera
Assignee: Fujifilm Holdings Corp
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Filing: 1986-09-26
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Granted: 1988-01-19
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Expires: 2006-09-26
Abstract
Abstract An integrated plastic back lid for cameras is provided with a reinforcing metal plate firmly attached to the back lid for preventing the back lid from being deformed and a pressure plate for holding a film flat which is held resiliently by the reinforcing plate. For resiliently holding the pressure plate, resiliently deformable holding arms are integrally formed either on the pressure plate or on the reinforcing plate. The pressure plate and the reinforcing plate are assembled before being attached to the back lid.
Inventors
- 👤 Kazuhiro Akiyama
- 👤 Syunji Nishimura
- 👤 Nobuyuki Kameyama
- 👤 Nobuo Tobayama
- 👤 Katsuya Kozai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:45
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
In combination with a back lid for opening and closing the rear of a camera body, a molded plastic plate, and molded in said plastic plate a thin plate of resilient metal, said metal plate having integral holding arms thereon that emerge from said plastic plate and yieldably engage said lid.
Claim 2
Dependent Claim
51 words
In combination with a back lid for opening and closing the rear of a camera body, a molded plastic plate, and molded in said plastic plate a thin plate of resilient metal, said metal plate having integral holding arms thereon that emerge from said plastic plate and yieldably engage said lid.
Claim 3
Dependent Claim
50 words
Structure as defined in claim 1, said plastic plate being elongated, said arms extending in the direction of the length of said plastic plate and being grouped in two sets of arms, the arms of each said set extending in a direction opposite the arms of the other said set.
Claim 4
Dependent Claim
86 words
A plastic back lid for opening and closing the rear of a camera body, a reinforcing plate firmly attached to said plastic back lid so as to prevent the deformation of said plastic back lid under external force; and a pressure plate for pressing film flat, said pressure plate comprising a molded plastic plate, and molded in said plastic plate a thin plate of resilient metal, said metal plate having integral folding arms thereon that emerge from said plastic plate and yieldably engage said reinforcing plate.
Claim 5
Dependent Claim
86 words
A plastic back lid for opening and closing the rear of a camera body, a reinforcing plate firmly attached to said plastic back lid so as to prevent the deformation of said plastic back lid under external force; and a pressure plate for pressing film flat, said pressure plate comprising a molded plastic plate, and molded in said plastic plate a thin plate of resilient metal, said metal plate having integral folding arms thereon that emerge from said plastic plate and yieldably engage said reinforcing plate.
Claim 6
Dependent Claim
51 words
A structure as defined in claim 3, said plastic plate being elongated, said arms extending in the direction of the length of said plastic plate and being grouped in two sets of arms, the arms of each said set extending in a direction opposite the arms of the other said set.
References Cited (Backward Citations)
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Cited
US4487491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |