Patent US3611896A successfully refreshed from Google Patents.
US3611896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens protective device built into the camera body
Assignee: Minolta Co Ltd
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Filing: 1968-09-30
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Granted: 1971-10-12
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Expires: 1988-09-30
Abstract
Abstract A lens protective device built into the camera body operated by and automatically operated by the shutter release mechanism so that the protective part is caused to recede out of the lens light path just before the exposure begins and to come back in front of the lens, covering it, when the release mechanism returns to its original position.
Inventors
- 👤 Koichi Aoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:16
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
In a photographic camera having a lens, a shutter, and shutter release mechanism including a manually operable shutter release member and means urging said member toward closed-shutter position; a lens protective device comprising a shield mounted on said camera for movement from a normal position covering the front of said lens to a position in which the said lens is uncovered, means urging said shield to lens-covering position, and means operatively connecting said shield and said shutter release member for moving said shield to lens-uncovering position upon operation of said member to release said shutter, said shield being mounted on said camera for rectilinear movement at right angles to the axis of the image-forming light path to said lens, said shield having a lens-uncovering opening therein which lies in front of said lens when said shield is in lens-uncovering position.
Claim 2
Dependent Claim
140 words
In a photographic camera having a lens, a shutter, and shutter release mechanism including a manually operable shutter release member and means urging said member toward closed-shutter position; a lens protective device comprising a shield mounted on said camera for movement from a normal position covering the front of said lens to a position in which the said lens is uncovered, means urging said shield to lens-covering position, and means operatively connecting said shield and said shutter release member for moving said shield to lens-uncovering position upon operation of said member to release said shutter, said shield being mounted on said camera for rectilinear movement at right angles to the axis of the image-forming light path to said lens, said shield having a lens-uncovering opening therein which lies in front of said lens when said shield is in lens-uncovering position.
Claim 3
Dependent Claim
17 words
A device according to claim 1, said means connecting said shield and said member comprising a wire.
Claim 4
Dependent Claim
146 words
In a photographic camera having a lens, a shutter, and shutter release mechanism including a manually operable shutter release member and means urging said member toward closed-shutter position; a lens protective device comprising a shield mounted on said camera for movement from a normal position covering the front of said lens to a position in which the said lens in uncovered, means urging said shield to lens-covering position, and means operatively connecting said shield and said shutter release member for moving said shield to lens-uncovering position upon operation of said member to release said shutter, said shield comprising a flexible screen having a lens-uncovering opening therein, and rollers mounting the respective ends of said screen on said camera on opposite sides of said lens, said screen being enough longer than the distance between said rollers so that said opening is movable between lens-covering and lens-uncovering positions.
Claim 5
Dependent Claim
146 words
In a photographic camera having a lens, a shutter, and shutter release mechanism including a manually operable shutter release member and means urging said member toward closed-shutter position; a lens protective device comprising a shield mounted on said camera for movement from a normal position covering the front of said lens to a position in which the said lens in uncovered, means urging said shield to lens-covering position, and means operatively connecting said shield and said shutter release member for moving said shield to lens-uncovering position upon operation of said member to release said shutter, said shield comprising a flexible screen having a lens-uncovering opening therein, and rollers mounting the respective ends of said screen on said camera on opposite sides of said lens, said screen being enough longer than the distance between said rollers so that said opening is movable between lens-covering and lens-uncovering positions.
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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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |