US3636843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic flashlight attachment for camera viewfinder
Assignee: Nikon Corp
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Filing: 1969-09-18
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Granted: 1972-01-25
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Expires: 1989-09-18
Abstract
Abstract An attachment for rotatably mounting the pilot lamp of an electronic flashlight on the camera viewfinder eyepiece. By rotating the pilot lamp with relation to the viewfinder, the person using the camera can keep the pilot lamp within his field of vision while looking through the viewfinder, regardless of the position of the camera.
Inventors
- 👤 Kunihiko Hori
- 👤 Keno Okuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:16
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/05; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A viewfinder eyepiece adapter for an electronic flashlight comprising a pilot lamp which indicates that the electronic flashlight is ready, a lamp compartment which contains the lamp, a connecting cord having a plug which connects the cord to the electronic flashlight, a ring form fitting plate for connecting the lamp compartment to the viewfinder, a fixing ring which mounts the ring form fitting plate to the eyepiece of the camera, a window formed on one portion of the said lamp compartment so that said pilot lamp of the lamp compartment can be directly seen by the eye positioned at the viewfinder eyepiece of the camera, and said lamp compartment being installed in such a way as to be rotatable around the optical axis of the viewfinder eyepiece and fixed to any position by the use of said fixing ring.
Claim 2
Dependent Claim
139 words
A viewfinder eyepiece adapter for an electronic flashlight comprising a pilot lamp which indicates that the electronic flashlight is ready, a lamp compartment which contains the lamp, a connecting cord having a plug which connects the cord to the electronic flashlight, a ring form fitting plate for connecting the lamp compartment to the viewfinder, a fixing ring which mounts the ring form fitting plate to the eyepiece of the camera, a window formed on one portion of the said lamp compartment so that said pilot lamp of the lamp compartment can be directly seen by the eye positioned at the viewfinder eyepiece of the camera, and said lamp compartment being installed in such a way as to be rotatable around the optical axis of the viewfinder eyepiece and fixed to any position by the use of said fixing ring.
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |