US4457604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera having lens protection cover
Assignee: Canon Inc
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Filing: 1982-02-23
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Granted: 1984-07-03
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Expires: 2002-02-23
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
2026-11-01 21:53
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18; G03B11/00; G03B11/04; G03B11/043
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
In a camera, an improvement comprising: (a) a lens protection member provided on the camera so as to be movable between a first position at which said member protects the front face of the photographing lens provided on the camera and a second position at which said member retires from the front face of the photographing lens; (b) an operation member for changing over the photographing mode from the ordinary photographing mode to another photographing mode by changing over from a first state to a second state; and (c) a lock member in operative engagement with the movement of the lens protection member for locking the operation member in the first state when the lens protection member is at the first position.
Claim 2
Dependent Claim
122 words
In a camera, an improvement comprising: (a) a lens protection member provided on the camera so as to be movable between a first position at which said member protects the front face of the photographing lens provided on the camera and a second position at which said member retires from the front face of the photographing lens; (b) an operation member for changing over the photographing mode from the ordinary photographing mode to another photographing mode by changing over from a first state to a second state; and (c) a lock member in operative engagement with the movement of the lens protection member for locking the operation member in the first state when the lens protection member is at the first position.
Claim 3
Dependent Claim
28 words
A camera according to claim 1, wherein the operation member sets the camera in the self-timer mode when the first state is changed over into the second state.
Claim 4
Dependent Claim
30 words
A camera according to claim 1, wherein the operation member sets the camera into the flash light photographing mode when the first state is changed over into the second state.
Claim 5
Dependent Claim
43 words
A camera according to claim 3, further comprising: (d) flash light means; and (e) switching means for starting the light emitting preparation operation of the flash light means when the operation member is changed over from the first state to the second state.
Claim 6
Dependent Claim
142 words
In a camera, an improvement comprising: (a) a lens protection member provided on the camera movable between a first position at which said member protects the front face of the photographing lens and a second position at which said member retires from the front face of the photographing lens; (b) a first operation member for moving the lens protection member between the first and the second position; (c) a second operation member for changing the photographing mode from the ordinary photographing mode to another photographing mode when a first state is changed over to a second state; and (d) a lock member for locking the second operation member in the first state, said lock member releasing the locking of the second operation member when the lens protection member is set in the second position by the operation of the first operation member.
Claim 7
Dependent Claim
142 words
In a camera, an improvement comprising: (a) a lens protection member provided on the camera movable between a first position at which said member protects the front face of the photographing lens and a second position at which said member retires from the front face of the photographing lens; (b) a first operation member for moving the lens protection member between the first and the second position; (c) a second operation member for changing the photographing mode from the ordinary photographing mode to another photographing mode when a first state is changed over to a second state; and (d) a lock member for locking the second operation member in the first state, said lock member releasing the locking of the second operation member when the lens protection member is set in the second position by the operation of the first operation member.
Claim 8
Dependent Claim
144 words
In a camera, an improvement comprising: (a) a lens protection member provided on the camera so as to be movable between a first position at which said member protects the front face of the photographing lens provided on the camera and a second position at which said member retires from the front face of the photographing lens; (b) an operation member for moving the lens protection member between the first and the second position; (c) flash means capable of emitting a flash movable between a first and a second state; and (d) a lock member for locking the flash means at the first state, said lock member being linkable with the operation member after the lens protection member moves from the first position to the second position so as to release the locking of the flash means by the operation of the operation means.
Claim 9
Dependent Claim
144 words
In a camera, an improvement comprising: (a) a lens protection member provided on the camera so as to be movable between a first position at which said member protects the front face of the photographing lens provided on the camera and a second position at which said member retires from the front face of the photographing lens; (b) an operation member for moving the lens protection member between the first and the second position; (c) flash means capable of emitting a flash movable between a first and a second state; and (d) a lock member for locking the flash means at the first state, said lock member being linkable with the operation member after the lens protection member moves from the first position to the second position so as to release the locking of the flash means by the operation of the operation means.
Claim 10
Dependent Claim
127 words
In a camera, an improvement comprising: (a) a lens protection member provided on the camera so as to be movable between a first position at which said member protects the front surface of the photographing lens provided on the camera and a second position at which said surface retreats from the front surface of the photographing lens; (b) switching means to be exchanged from a first state into a second state during the displacement of the lens protection member when the lens protection member moves between the first and the second position; and (c) a check circuit for checking the voltage of the power source built in the camera, said check circuit checking the voltage of the power source when the switching means assumes the second state.
Claim 11
Dependent Claim
127 words
In a camera, an improvement comprising: (a) a lens protection member provided on the camera so as to be movable between a first position at which said member protects the front surface of the photographing lens provided on the camera and a second position at which said surface retreats from the front surface of the photographing lens; (b) switching means to be exchanged from a first state into a second state during the displacement of the lens protection member when the lens protection member moves between the first and the second position; and (c) a check circuit for checking the voltage of the power source built in the camera, said check circuit checking the voltage of the power source when the switching means assumes the second state.
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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) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |