Patent US4329624A successfully refreshed from Google Patents.
US4329624A
Expired / Lapsed
US
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Computer type electronic photoflash
Assignee: Sunpak KK
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Filing: 1980-01-07
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Granted: 1982-05-11
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Expires: 2000-01-07
Abstract
Abstract A computer type electronic photoflash consisting of a main photoflash unit having photoflash emission and photoflash light volume control functions and a plurality of adapters connectable thereto. Each of said adapters is used with a photographic camera for which an electronic photoflash of special make and design is to be used exclusively. Each adapter serves for relaying electrical signals between the camera and the main photoflash unit and has an electric circuit adapted for this purpose. Thus, the number of the adapters is selected to be equal to the number of different descriptions of the photographic cameras for which respective electronic photoflashes of special make and design are to be used exclusively.
Inventors
- 👤 Akio Kamon
- 👤 Sakyo Nagashima
- 👤 Yuzo Tsuruta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:23
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: 3
Claim 1
Independent Claim
145 words
An adapter for interconnecting a camera and a flash unit wherein the flash unit includes a capacitor, a flash tube, discharge means for discharging said capacitor through said flash tube, and flash-termination means for terminating the discharge of said capacitor through said flash tube, said adapter comprising a set of camera terminals for connection to said camera, a set of flash unit terminals for connection to said flash unit, synchronizing means coupling said camera and flash unit terminals for conveying a synchronizing signal from said camera to said photoflash unit for initiating operation of said discharge means, photometric means in said adapter for responding to reflection of light developed by said flash unit, and a terminal for said adapter for connection to a terminal of said flash unit for conveying a signal from said photometric means to said flash termination means to initiate operation thereof.
Claim 2
Dependent Claim
145 words
An adapter for interconnecting a camera and a flash unit wherein the flash unit includes a capacitor, a flash tube, discharge means for discharging said capacitor through said flash tube, and flash-termination means for terminating the discharge of said capacitor through said flash tube, said adapter comprising a set of camera terminals for connection to said camera, a set of flash unit terminals for connection to said flash unit, synchronizing means coupling said camera and flash unit terminals for conveying a synchronizing signal from said camera to said photoflash unit for initiating operation of said discharge means, photometric means in said adapter for responding to reflection of light developed by said flash unit, and a terminal for said adapter for connection to a terminal of said flash unit for conveying a signal from said photometric means to said flash termination means to initiate operation thereof.
Claim 3
Dependent Claim
23 words
An adapter as defined in claim 1, arranged for direct mounting between said flash unit and camera to provide a physical connection therebetween.
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) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |