US4143956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera with date entry
Assignee: Ricoh Co Ltd
•
Filing: 1977-02-18
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Granted: 1979-03-13
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Expires: 1997-02-18
Abstract
Abstract A camera capable of entering the date a picture is taken onto a film loaded therein comprises a digital date indicator for indicating the same date as the calendar date, an optical system for passing light from the date indicator onto part of the film load and for focussing the light thereon, a sight window for permitting the date indication provided by the date indicator to be viewed from the exterior of the camera, and a light shield which prevents light impinging on the sight window from reaching the film surface when a picture is taken.
Inventors
- 👤 Fumihiro Miyagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:09
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24; G03B17/245; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
106 words
A date entry device for a camera containing film comprising, a digital watch type date indicator within the camera having a luminescent date display for displaying the day, month and year corresponding with the calendar date, and optical means for passing light emanating from said luminescent date display of said date indicator to the film and focusing the light on the film, a sight window in the camera for permitting the luminescent date display to be viewed from outside the camera, and a light shield comprising a mirror for preventing incident light on said sight window from reaching the film when a picture is being taken.
Claim 2
Dependent Claim
106 words
A date entry device for a camera containing film comprising, a digital watch type date indicator within the camera having a luminescent date display for displaying the day, month and year corresponding with the calendar date, and optical means for passing light emanating from said luminescent date display of said date indicator to the film and focusing the light on the film, a sight window in the camera for permitting the luminescent date display to be viewed from outside the camera, and a light shield comprising a mirror for preventing incident light on said sight window from reaching the film when a picture is being taken.
Claim 3
Dependent Claim
24 words
A date entry device according to claim 1, wherein the camera further includes a viewfinder having an eyepiece, said sight window comprising the eyepiece.
Claim 4
Dependent Claim
127 words
A date entry device for a camera comprising a digital watch type date indicator in the camera having a luminescent date display for displaying the calendar date, and optical means associated said luminescent date display for passing the light of said luminescent date display from said luminescent date display to a film in the camera, a sight window for permitting a viewing of said luminescent date display from outside said camera, a light shield for preventing incident light on said sight window from reaching the film when a picture is being taken, and a date adjusting means for adjusting the luminescent date display of said date indicator, the camera including a battery receiving chamber with a closing lid, said adjusting means disposed within said battery receiving chamber.
Claim 5
Dependent Claim
127 words
A date entry device for a camera comprising a digital watch type date indicator in the camera having a luminescent date display for displaying the calendar date, and optical means associated said luminescent date display for passing the light of said luminescent date display from said luminescent date display to a film in the camera, a sight window for permitting a viewing of said luminescent date display from outside said camera, a light shield for preventing incident light on said sight window from reaching the film when a picture is being taken, and a date adjusting means for adjusting the luminescent date display of said date indicator, the camera including a battery receiving chamber with a closing lid, said adjusting means disposed within said battery receiving chamber.
Claim 6
Dependent Claim
152 words
A date entry device for a camera with film comprising, a date indicator having a luminescent date display of the same date as the calendar date, and optical means associated with said date indicator for passing light from said luminescent date display to be focused onto a portion of the film, a sight window associated with said date indicator for permitting a viewing of said luminescent date display from outside of the camera, a light shield for preventing incident light on said sight window from reaching the film when a picture is being taken, selective switching means connected to said date indicator for selecting a portion of said luminescent date display which requires an adjustment, and an adjustment switch connected in series with said selective switching means, the camera including a film rewind shaft and said selective switching means comprising a selection member disposed in coaxial relationship with the film rewind shaft.
Claim 7
Dependent Claim
152 words
A date entry device for a camera with film comprising, a date indicator having a luminescent date display of the same date as the calendar date, and optical means associated with said date indicator for passing light from said luminescent date display to be focused onto a portion of the film, a sight window associated with said date indicator for permitting a viewing of said luminescent date display from outside of the camera, a light shield for preventing incident light on said sight window from reaching the film when a picture is being taken, selective switching means connected to said date indicator for selecting a portion of said luminescent date display which requires an adjustment, and an adjustment switch connected in series with said selective switching means, the camera including a film rewind shaft and said selective switching means comprising a selection member disposed in coaxial relationship with the film rewind shaft.
Claim 8
Dependent Claim
30 words
A date entry device according to claim 4, wherein said selection member is adapted to be connected with the film rewind shaft when the film rewind shaft is pulled upwardly.
Claim 9
Dependent Claim
186 words
A date entry device for a camera with film comprising, a digital watch type data indicator having a luminescent date display of the same date as the calendar date, and optical means for passing and focusing light from said luminescent date display to a portion of the film, a sight window associated with said date indicator for permitting a viewing of said luminescent date display from outside of the camera, a light shield associated with said sight window for preventing incident light on said sight window from reaching the film when a picture is being taken, the camera including a film rewind shaft, a selection member rotatably disposed about the film rewind shaft, the rewind shaft being movable to a first and second position, said selection member being rotatable with the rewind shaft when it is moved into said first raised position for selecting a portion of the luminescent date display which requires an adjustment, a conductive area on said selective member and non-rotatable switch contacts engaged on said rewind shaft engageable with said conductive area when the rewind shaft is in said second raised position.
Claim 10
Dependent Claim
186 words
A date entry device for a camera with film comprising, a digital watch type data indicator having a luminescent date display of the same date as the calendar date, and optical means for passing and focusing light from said luminescent date display to a portion of the film, a sight window associated with said date indicator for permitting a viewing of said luminescent date display from outside of the camera, a light shield associated with said sight window for preventing incident light on said sight window from reaching the film when a picture is being taken, the camera including a film rewind shaft, a selection member rotatably disposed about the film rewind shaft, the rewind shaft being movable to a first and second position, said selection member being rotatable with the rewind shaft when it is moved into said first raised position for selecting a portion of the luminescent date display which requires an adjustment, a conductive area on said selective member and non-rotatable switch contacts engaged on said rewind shaft engageable with said conductive area when the rewind shaft is in said second raised position.
Claim 11
Dependent Claim
209 words
A date entry device for placing the calendar date on a portion of film within a camera comprising, a date indicator in the camera having a luminescent date display showing the calendar date in a plurality of date portions, said date indicator including circuit means for automatically changing said luminescent date display with the calendar date, optical means in the camera associated with said date indicator for focusing the light from said luminescent date display onto a portion of the film, and date adjustment means connected to said date indicator for manually adjusting said date portions of said luminescent date display, said date adjustment means comprising, selective circuitry means connected to each of said date portions of said luminescent date display for selectively changing the date portions, a selection disc rotatably mounted on the camera, a conductive area on said selection disc, switch contacts respectively connected to each of said selective adjustment circuit means mounted adjacent said selection disc in the camera, said conductive area being selectively positionable adjacent one of said switch contacts, and an adjusting switch connected between said switch contacts and said selective adjustment circuit means for activating said selective adjustment circuit means and changing the date portion connected to the selected selective adjustment circuit means.
Claim 12
Dependent Claim
209 words
A date entry device for placing the calendar date on a portion of film within a camera comprising, a date indicator in the camera having a luminescent date display showing the calendar date in a plurality of date portions, said date indicator including circuit means for automatically changing said luminescent date display with the calendar date, optical means in the camera associated with said date indicator for focusing the light from said luminescent date display onto a portion of the film, and date adjustment means connected to said date indicator for manually adjusting said date portions of said luminescent date display, said date adjustment means comprising, selective circuitry means connected to each of said date portions of said luminescent date display for selectively changing the date portions, a selection disc rotatably mounted on the camera, a conductive area on said selection disc, switch contacts respectively connected to each of said selective adjustment circuit means mounted adjacent said selection disc in the camera, said conductive area being selectively positionable adjacent one of said switch contacts, and an adjusting switch connected between said switch contacts and said selective adjustment circuit means for activating said selective adjustment circuit means and changing the date portion connected to the selected selective adjustment circuit means.
Claim 13
Dependent Claim
96 words
A date entry device according to claim 7, further including date viewing means comprising sight window means in the camera for viewing said luminescent display from outside of the camera, and movable light shield means mounted in the camera, movable from a viewing position for allowing said luminescent display to be visible from outside of the camera through said window means, to a date entry position for allowing the light from said luminescent display to be focussed on the film by said optical means and preventing light from said sight window means from striking the film.
Claim 14
Dependent Claim
26 words
A date entry device according to claim 7, wherein the camera includes a film winding shaft, said selection disc being connected to the film winding shaft.
Claim 15
Dependent Claim
144 words
A date entry device for a camera containing film comprising, a digital watch type date indicator within the camera having a luminescent date display for displaying the day, month and year corresponding with the calendar date, and optical means for passing light emanating from said luminescent date display of said date indicator to the film and focusing the light on the film, a sight window in the camera for permitting the luminescent date display to be viewed from outside the camera, and a light shield for preventing incident light on said sight window from reaching the film when a picture is being taken, said light shield comprising a pivotable mirror pivotable between a first position in which the light from said luminescent date display is passed to said optical system and a second position in which said light is passed toward said sight window.
Claim 16
Dependent Claim
144 words
A date entry device for a camera containing film comprising, a digital watch type date indicator within the camera having a luminescent date display for displaying the day, month and year corresponding with the calendar date, and optical means for passing light emanating from said luminescent date display of said date indicator to the film and focusing the light on the film, a sight window in the camera for permitting the luminescent date display to be viewed from outside the camera, and a light shield for preventing incident light on said sight window from reaching the film when a picture is being taken, said light shield comprising a pivotable mirror pivotable between a first position in which the light from said luminescent date display is passed to said optical system and a second position in which said light is passed toward said sight window.
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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) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |