US4550991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for detecting code on film cartridge
Assignee: Nikon Corp
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Filing: 1984-11-27
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Granted: 1985-11-05
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Expires: 2004-11-27
Abstract
Abstract A camera is provided with a detecting means provided with detecting contacts capable of positively detecting an information code on a film cartridge loaded in a film chamber and so arranged that they will not adversely affect the stability of the film cartridge loaded in the film chamber.
Inventors
- 👤 Sunao Ishizaka
- 👤 Osamu Maida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:25
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
194 words
In a camera of the type capable of using a film cartridge having a code indicia including a plurality of electrically conductive contacts representative of one or more features of a film encased in said film cartridge, a code indicia detecting device comprising: (a) wall members which define a film chamber for receiving therein said film cartridge and which are formed with openings which are in opposed relationship with said code indicia on said film cartridge; (b) detection means which has electrical contact means which in turn can be moved between first positions at which said electrical contact means are extended into said film chamber through said openings of said wall members and second positions at which said electrical contact means are retracted away from said film chamber, said detection means being capable of deriving an electrical signal from said code indicia through said electrical contact means; (c) a back member which opens or closes said film chamber; and (d) means for operatively connecting said detection means to said back member in such a way that when said back member closes said film chamber, said electrical contact means are forced into their first positions.
Claim 2
Dependent Claim
194 words
In a camera of the type capable of using a film cartridge having a code indicia including a plurality of electrically conductive contacts representative of one or more features of a film encased in said film cartridge, a code indicia detecting device comprising: (a) wall members which define a film chamber for receiving therein said film cartridge and which are formed with openings which are in opposed relationship with said code indicia on said film cartridge; (b) detection means which has electrical contact means which in turn can be moved between first positions at which said electrical contact means are extended into said film chamber through said openings of said wall members and second positions at which said electrical contact means are retracted away from said film chamber, said detection means being capable of deriving an electrical signal from said code indicia through said electrical contact means; (c) a back member which opens or closes said film chamber; and (d) means for operatively connecting said detection means to said back member in such a way that when said back member closes said film chamber, said electrical contact means are forced into their first positions.
Claim 3
Dependent Claim
181 words
In a camera of the type capable of using a film cartridge having a code indicia including a plurality of electrically conductive contacts representative of one or more features of a film encased in said film cartridge, a code indicia detecting device comprising: (a) wall members which define a film chamber for receiving therein said film cartridge and which are formed with openings which are in opposed relationship with said code indicia on said film cartridge; (b) detection means which has electrical contact means which in turn can be moved between first positions at which said electrical contact means are extended into said film chamber through said openings of said wall members and second positions at which said electrical contact means are retracted away from said film chamber, said detection means being capable of deriving an electrical signal from said code indicia through said electrical contact means, said electrical contact means being normally biased toward said first positions; and (c) permanent magnet members embedded in one of said wall members adjacent to respective openings thereof and oriented toward said film chamber.
Claim 4
Dependent Claim
181 words
In a camera of the type capable of using a film cartridge having a code indicia including a plurality of electrically conductive contacts representative of one or more features of a film encased in said film cartridge, a code indicia detecting device comprising: (a) wall members which define a film chamber for receiving therein said film cartridge and which are formed with openings which are in opposed relationship with said code indicia on said film cartridge; (b) detection means which has electrical contact means which in turn can be moved between first positions at which said electrical contact means are extended into said film chamber through said openings of said wall members and second positions at which said electrical contact means are retracted away from said film chamber, said detection means being capable of deriving an electrical signal from said code indicia through said electrical contact means, said electrical contact means being normally biased toward said first positions; and (c) permanent magnet members embedded in one of said wall members adjacent to respective openings thereof and oriented toward said film chamber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |