Patent US3280416A successfully refreshed from Google Patents.
Patent US3584562A successfully refreshed from Google Patents.
US3584562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film holder
Assignee: Individual
•
Filing: 1968-09-04
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Granted: 1971-06-15
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Expires: 1988-09-04
Abstract
Abstract An accessory camera back for converting a conventional film type camera having a removable back to a camera which is adapted to take Polaroid pictures. An enclosed housing having a hinged top wall is provided which is adapted to receive a Polaroid pack of film therein. A through light aperture is received in the top plate to provide for the passage of light into the interior of the housing to expose the film. A removable dark slide is slidably received in said housing for closing the light aperture. A plurality of projection receiving openings are provided in the top wall which are adapted to receive projections from a camera body to mount the housing on the camera. Additionally, locking means are provided to engage the projections to lock the camera back to the camera.
Inventors
- 👤 Kenneth R Wisner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:07
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/26; G03B17/28; G03B17/32; G03B17/34
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
243 words
An accessory camera back of the type having means for receiving Polaroid film to convert a conventional film-type camera having a removable back to a camera adapted to take Polaroid film comprising an enclosing housing having a top portion including a top wall and a bottom portion hingedly connected to said top portion, said bottom portion normally being connected with said top portion in light-tight engagement therewith and being adapted to be rotated about said hinged connection to permit access to the interior of said housing to insert film therein or remove film therefrom, a through light aperture in said top wall through which light may pass to expose the film within the housing, a removable dark slide slidably received within said housing and movable to an aperture-closing position to prevent the passage of light through said aperture, a plurality of projection-receiving openings in said top wall for receiving therethrough complementary formed projections mounted on a camera body, and locking means on said top wall for engaging the camera projections to prevent the release of the same, aN elongated aperture in said top wall adjacent to said light aperture positioned to receive a projection from a camera, closing means on said dark slide positioned to effect the closure of said elongated aperture when said dark slide is in the aperture-closing position, and light trap means positioned between said elongated and light apertures for preventing stray light from exposing film received in said housing.
Claim 2
Dependent Claim
243 words
An accessory camera back of the type having means for receiving Polaroid film to convert a conventional film-type camera having a removable back to a camera adapted to take Polaroid film comprising an enclosing housing having a top portion including a top wall and a bottom portion hingedly connected to said top portion, said bottom portion normally being connected with said top portion in light-tight engagement therewith and being adapted to be rotated about said hinged connection to permit access to the interior of said housing to insert film therein or remove film therefrom, a through light aperture in said top wall through which light may pass to expose the film within the housing, a removable dark slide slidably received within said housing and movable to an aperture-closing position to prevent the passage of light through said aperture, a plurality of projection-receiving openings in said top wall for receiving therethrough complementary formed projections mounted on a camera body, and locking means on said top wall for engaging the camera projections to prevent the release of the same, aN elongated aperture in said top wall adjacent to said light aperture positioned to receive a projection from a camera, closing means on said dark slide positioned to effect the closure of said elongated aperture when said dark slide is in the aperture-closing position, and light trap means positioned between said elongated and light apertures for preventing stray light from exposing film received in said housing.
Claim 3
Dependent Claim
42 words
An accessory camera back as in claim 1, and a plurality of continuous recesses in spaced relationship to the edges defining said light aperture adapted to engage complementary formed projecting ribs on a camera back to provide a plurality of light traps.
Claim 4
Dependent Claim
49 words
An accessory camera back as in claim 1, in which said closing means includes at least two spaced ears whereby said dark slide may be inserted into said camera in at least two different orientations so that any one of said ears is operable to close said elongated aperture.
Claim 5
Dependent Claim
109 words
An accessory camera back as in claim 1, in which said light trap includes an arm movable from an elongated aperture open to an elongated aperture closed position by said closing means, a wall in said housing, a slot in said wall, a projection on said arm extending through said slot and being engageable by said closing means when said arm is in said elongated aperture open position to effect movement of said arm to the elongated aperture closed position when said dark slide is moved to the aperture closed position, said arm being sized to close said slot when said arm is in the elongated aperture open position.
Claim 6
Dependent Claim
203 words
An accessory back of the type having means for receiving Polaroid film to convert a conventional film-type camera having a removable back to a camera adapted to take Polaroid film comprising an enclosed housing having a top portion including a top wall and a bottom portion hingedly connected to said top portion, said bottom portion normally being connected with said top portion in light-tight engagement therewith and being adapted to be rotated about said hinged connection to permit access to the interior of said housing to insert film therein or remove film therefrom, a through light aperture in said top wall through which light may pass to expose the film within the housing, a removable dark slide slidably received within said housing and movable to an aperture-closing position to prevent the passage of light through said light aperture, and locking means on said top wall for engaging complementary formed projections mounted on a camera body to prevent the release of the same, said locking means including a recessed plate in said top wall, and at least two openings in said plate adapted to receive the projecting lugs from a camera therethrough and to engage said lugs to prevent their release from said openings.
Claim 7
Dependent Claim
203 words
An accessory back of the type having means for receiving Polaroid film to convert a conventional film-type camera having a removable back to a camera adapted to take Polaroid film comprising an enclosed housing having a top portion including a top wall and a bottom portion hingedly connected to said top portion, said bottom portion normally being connected with said top portion in light-tight engagement therewith and being adapted to be rotated about said hinged connection to permit access to the interior of said housing to insert film therein or remove film therefrom, a through light aperture in said top wall through which light may pass to expose the film within the housing, a removable dark slide slidably received within said housing and movable to an aperture-closing position to prevent the passage of light through said light aperture, and locking means on said top wall for engaging complementary formed projections mounted on a camera body to prevent the release of the same, said locking means including a recessed plate in said top wall, and at least two openings in said plate adapted to receive the projecting lugs from a camera therethrough and to engage said lugs to prevent their release from said openings.
Claim 8
Dependent Claim
65 words
An accessory camera back as in claim 5, in which said locking means further includes at least two lug-receiving apertures in said top wall, displaceable lug engaging members in each lug-receiving aperture adapted to be displaced when projecting complementary formed lugs from a camera are received therethrough and to engage said lugs when positioned through said lug-receiving apertures to lock the camera on said back.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |