US3626829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic film-sensitivity setting device for a camera having a built-in exposure meter
Assignee: Nikon Corp
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Filing: 1968-10-01
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Granted: 1971-12-14
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Expires: 1988-10-01
Abstract
Abstract An automatic film-sensitivity setting means is provided for a camera having a built-in exposure meter and using a film cartridge. The film cartridge is formed with a positioning member which mates with a positioning member in the camera body, and is also formed with a film sensitivity determining member spaced from the cartridge positioning member in accordance with the sensitivity of the film loaded into the cartridge. A filmsensitivity sensing pin within the camera and interlocked with a variable resistance element in the exposure meter circuit is movable by the insertion of the cartridge into the camera body and then permitted to abut the sensitivity member of the cartridge to vary the resistance characteristics of the exposure meter circuit in accordance with the positioning of the sensing pin.
Inventors
- 👤 Yozo Iida
- 👤 Yoshihisa Katsuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:50
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
329 words
An automatic film-sensitivity setting device for a camera having a built-in exposure meter, the camera being adapted for cartridge-type film loading, the cartridge being provided with a signal portion positioned thereon to indicate the sensitivity of the film loaded therein, comprising a chamber within the camera housing and formed with a fixed portion for positioning the cartridge therein, a sensing member movably mounted in the camera housing, biasing means for biasing the sensing member in a direction to engage the cartridge signal portion when the cartridge is within said chamber, biased control means for controlling the sensing member and positionable from its biased position upon insertion of the cartridge into the camera chamber, said biased control means including a movable member having a portion thereof adapted to extend into the camera chamber for engagement by the cartridge upon insertion thereof into the chamber, a pivotable lever coacting with the movable member, and a spring biasing said pivotable lever against said movable member to extend said movable member portion into the camera chamber, means for interconnecting said lever and the sensing member, the bias of said lever spring being opposed to the bias of said sensing member biasing means, said lever in its biased position maintaining the sensing member in an extreme position against the bias of the sensing member biasing means and releasing said sensing member when said lever is moved upon insertion of the cartridge into the camera chamber to permit the sensing member to be biased by said biasing means into engagement with the signal portion of said cartridge, means of retaining the cartridge within the camera chamber including resilient means for biasing the cartridge into engagement with said fixed portion, the bias of said resilient means being in a direction transverse to the bias of said sensing member biasing means, and an exposure control element of the exposure meter connected to said sensing member for adjustment in accordance with the position of the cartridge signal portion.
Claim 2
Dependent Claim
329 words
An automatic film-sensitivity setting device for a camera having a built-in exposure meter, the camera being adapted for cartridge-type film loading, the cartridge being provided with a signal portion positioned thereon to indicate the sensitivity of the film loaded therein, comprising a chamber within the camera housing and formed with a fixed portion for positioning the cartridge therein, a sensing member movably mounted in the camera housing, biasing means for biasing the sensing member in a direction to engage the cartridge signal portion when the cartridge is within said chamber, biased control means for controlling the sensing member and positionable from its biased position upon insertion of the cartridge into the camera chamber, said biased control means including a movable member having a portion thereof adapted to extend into the camera chamber for engagement by the cartridge upon insertion thereof into the chamber, a pivotable lever coacting with the movable member, and a spring biasing said pivotable lever against said movable member to extend said movable member portion into the camera chamber, means for interconnecting said lever and the sensing member, the bias of said lever spring being opposed to the bias of said sensing member biasing means, said lever in its biased position maintaining the sensing member in an extreme position against the bias of the sensing member biasing means and releasing said sensing member when said lever is moved upon insertion of the cartridge into the camera chamber to permit the sensing member to be biased by said biasing means into engagement with the signal portion of said cartridge, means of retaining the cartridge within the camera chamber including resilient means for biasing the cartridge into engagement with said fixed portion, the bias of said resilient means being in a direction transverse to the bias of said sensing member biasing means, and an exposure control element of the exposure meter connected to said sensing member for adjustment in accordance with the position of the cartridge signal portion.
Claim 3
Dependent Claim
54 words
An automatic film-sensitivity setting device according to claim 1, wherein said interconnecting means includes a wire interconnecting said pivotable lever and said sensing member, said wire slackening to permit said sensing member biasing means to move said sensing member into engagement with the cartridge signal portion upon movement of said lever by said cartridge.
Claim 4
Dependent Claim
196 words
An automatic film-sensitivity setting device for a camera having a built-in exposure meter, the camera being adapted for cartridge-type film loading, the cartridge being provided with a signal portion positioned thereon to indicate the sensitivity of the film loaded therein, comprising a chamber within the camera housing and formed with a fixed portion for positioning the cartridge therein, a sensing member movably mounted in the camera housing, biasing means for biasing the sensing member in a direction to engage the cartridge signal portion when the cartridge is within said chamber, biased control means for controlling the sensing member and positionable from its biased position upon insertion of the cartridge into the camera chamber, said biased control means including a pivotable lever movable between two extreme positions, a spring biasing said pivotable lever to one extreme position, the bias of said lever spring being opposed to the bias of said sensing member biasing means, a projection on said lever, said projecTion being engaged by the film cartridge upon insertion thereof into the camera chamber when said lever is in said one biased position, the insertion of the film cartridge moving said lever to its other extreme position,
Claim 5
Dependent Claim
196 words
An automatic film-sensitivity setting device for a camera having a built-in exposure meter, the camera being adapted for cartridge-type film loading, the cartridge being provided with a signal portion positioned thereon to indicate the sensitivity of the film loaded therein, comprising a chamber within the camera housing and formed with a fixed portion for positioning the cartridge therein, a sensing member movably mounted in the camera housing, biasing means for biasing the sensing member in a direction to engage the cartridge signal portion when the cartridge is within said chamber, biased control means for controlling the sensing member and positionable from its biased position upon insertion of the cartridge into the camera chamber, said biased control means including a pivotable lever movable between two extreme positions, a spring biasing said pivotable lever to one extreme position, the bias of said lever spring being opposed to the bias of said sensing member biasing means, a projection on said lever, said projecTion being engaged by the film cartridge upon insertion thereof into the camera chamber when said lever is in said one biased position, the insertion of the film cartridge moving said lever to its other extreme position,
Claim 6
Dependent Claim
60 words
An automatic film-sensitivity setting device according to claim 3, wherein said pivotable lever is movable to said other extreme position in the same direction as the cartridge is moved upon insertion, the release of said spring biased detent permitting the biased lever spring to move said lever and cartridge preparatory to the removal of the cartridge from the camera chamber.
Claim 7
Dependent Claim
56 words
An automatic film-sensitivity setting device according to claim 4, wherein said interconnecting means includes a wire interconnecting said pivotable lever and said sensing member, said wire slackening to permit said sensing member biasing means to move said sensing member into engagement with the cartridge signal portion when said lever is moved to said other extreme position.
References Cited (Backward Citations)
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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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |