Patent US4564856A successfully refreshed from Google Patents.
Patent US4595268A successfully refreshed from Google Patents.
US4595268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera having lens protection cover
Assignee: Canon Inc
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Filing: 1985-09-17
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Granted: 1986-06-17
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Expires: 2005-09-17
Abstract
Abstract A lens protection cover is contained within a barrel ahead of the objective lens, and opening and closing of this lens protection cover is performed by an actuator operable along the periphery of the lens barrel, whereby it is possible not only to protect the objective lens when not in use, but also to permit camera operation to be controlled by the open and closed positions of the lens projection cover so that faulty operation is prevented.
Inventors
- 👤 Takayuki Tsuboi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:06
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18; G03B11/00; G03B11/04; G03B11/043
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
59 words
A camera comprising: (a) an optical system protection means for closing and opening the front side of an optical system; and (b) an operation member changeable between a first state and a second state for opening and closing the protection means, said operation member effecting change of the photographic mode of the camera when changed to a third state.
Claim 2
Dependent Claim
59 words
A camera comprising: (a) an optical system protection means for closing and opening the front side of an optical system; and (b) an operation member changeable between a first state and a second state for opening and closing the protection means, said operation member effecting change of the photographic mode of the camera when changed to a third state.
Claim 3
Dependent Claim
27 words
A camera according to claim 1, in which the operation member sets the camera to a flash photographic mode when it is changed to the third state.
References Cited (Backward Citations)
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US3878548A
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US4457604A
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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) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |