US4125766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic electronic flash device
Assignee: Rollei Werke Franke und Heidecke GmbH and Co KG
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Filing: 1976-11-12
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Granted: 1978-11-14
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Expires: 1996-11-12
Abstract
Abstract An automatic electronic flash device or computer flash device for cameras. The device includes besides an electronic flash lamp a capacitor capable of being discharged through the flash lamp. Also there is a light sensitive sensor and a device for extinguishing the flash lamp in response to the light falling upon the sensor. There are also provided two signal lamps, one for indicating whether the capacitor is charged, and the other one for indicating that the flash lamp has been discharged. A housing which can be separated from the flash device contains the sensor. The housing is capable of being secured to a camera and both signal lamps are visibly arranged at the rear surface of the sensor housing.
Inventors
- 👤 Wilfried Holtje
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/056
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
An automatic electronic flash device for use with a camera having a connector shoe, comprising: a flash attachment energized by discharge of a capacitor through a flash lamp and having a connector foot for selective insertion into the connector shoe, further having a connector shoe adjacent to the connector foot; a casing, including a front surface and a rear surface, and being connected to the flash attachment by an electrical cable; a connector foot of a standard type on said casing for fastening said casing alternatively to the camera and to the flash attachment by insertion of the foot of the casing into one of said shoes; a light-sensitive sensor mounted within the casing for sensing light incident on the front surface of said casing; a first signal lamp located on the rear surface of said casing for indicating when the capacitor is in a charged condition; and a second signal lamp located on the rear surface of said casing for indicating when the flash lamp has been flashed.
Claim 2
Dependent Claim
169 words
An automatic electronic flash device for use with a camera having a connector shoe, comprising: a flash attachment energized by discharge of a capacitor through a flash lamp and having a connector foot for selective insertion into the connector shoe, further having a connector shoe adjacent to the connector foot; a casing, including a front surface and a rear surface, and being connected to the flash attachment by an electrical cable; a connector foot of a standard type on said casing for fastening said casing alternatively to the camera and to the flash attachment by insertion of the foot of the casing into one of said shoes; a light-sensitive sensor mounted within the casing for sensing light incident on the front surface of said casing; a first signal lamp located on the rear surface of said casing for indicating when the capacitor is in a charged condition; and a second signal lamp located on the rear surface of said casing for indicating when the flash lamp has been flashed.
Claim 3
Dependent Claim
25 words
The device of claim 1, wherein said casing further comprises a synchronous contact for establishing a conductive path between the camera and the flash attachment.
Claim 4
Dependent Claim
15 words
The device of claim 2, wherein said synchronous contact is located at said connector foot.
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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) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |