US4748466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera provided with a light-shielding means
Assignee: Konica Minolta Inc
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Filing: 1986-09-29
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Granted: 1988-05-31
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Expires: 2006-09-29
Abstract
Abstract A light-shielding apparatus of a camera having a collapsible barrel provides a fixed cylindrical light-shielding member between a movable portion of the collapsible barrel and a frame of a camera body. The outer surface of the light-shielding fixed member can be overlapped with the movable portion.
Inventors
- 👤 Minoru Yamada
- 👤 Kenji Miyama
- 👤 Masataka Sawamura
- 👤 Eiji Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:05
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A camera provided with a lens having a first optical axis forming an optical path and a light-shielding apparatus and having a collapsible barrel wherein a fixed, cylindrical light-shielding member is provided between a movable portion of said barrel and a frame of the camera body, said member terminating adjacent a film surface, said barrel surrounding said member and with respect thereto, along said first optical axis between a projecting position in which said barrel extends from said camera and a collapsed position wherein said barrel is retracted into said camera, there being a clearance between said barrel and said member, said barrel at least partially overlapping said member when in said projecting position.
Claim 2
Dependent Claim
114 words
A camera provided with a lens having a first optical axis forming an optical path and a light-shielding apparatus and having a collapsible barrel wherein a fixed, cylindrical light-shielding member is provided between a movable portion of said barrel and a frame of the camera body, said member terminating adjacent a film surface, said barrel surrounding said member and with respect thereto, along said first optical axis between a projecting position in which said barrel extends from said camera and a collapsed position wherein said barrel is retracted into said camera, there being a clearance between said barrel and said member, said barrel at least partially overlapping said member when in said projecting position.
Claim 3
Dependent Claim
29 words
The camera of claim 1 wherein said barrel slides on at least one guide shaft which guide shaft is fixed relative to said body and is outside said barrel.
Claim 4
Dependent Claim
24 words
The camera of claim 1 wherein the rear end of said barrel is adjacent said frame when said barrel is in said collapsed position.
Claim 5
Dependent Claim
17 words
The camera of claim 1 wherein said member has a flange on its end adjacent said surface.
Claim 6
Dependent Claim
23 words
The camera of claim 4 wherein the rear end of said barrel abuts said flange when said barrel is in said collapsed position.
Claim 7
Dependent Claim
56 words
The camera of claim 1 comprising an automatic focusing device mounted on said camera and adapted for axial focusing movement, a first slidable contact on said device, a second slidable contact on said member and adapted to mate with said first contact, whereby electrical power from said camera body is supplied to said automatic focusing device.
Claim 8
Dependent Claim
35 words
The camera of claim 1 comprising a conversion lens adapted for movement into and out of said optical path, said conversion lens being in said optical path when said barrel is in said projecting position.
References Cited (Backward Citations)
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Cited
US2208797A
Cited
US3585916A
Cited
US4264173A
Cited
US4213686A
Cited
US4536068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |