US4333719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple flash adaptor
Assignee: Pentax Corp
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Filing: 1981-03-04
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Granted: 1982-06-08
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Expires: 2001-03-04
Abstract
Abstract An adaptor for a camera for operating multiple flash units with a single camera device in which all of the flash units simultaneously emit light. Output signals from each of the flash units indicating that the corresponding individual flash unit is ready to emit light are coupled to corresponding inputs of a logical product circuit such as an AND gate. The single output of the AND gate is coupled to a single corresponding input of the camera device. The X contact of the camera device is coupled in common to the actuation terminals of each of the flash units.
Inventors
- 👤 Satoshi Takami
- 👤 Teruo Hagiwara
- 👤 Toru Kando
- 👤 Yoshifumi Kuroki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/0557
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A multiple flash adaptor for causing a plurality of flash units to simultaneously emit light in response to actuation by a single camera device, said camera device detecting electrical signals produced by said plurality of flash units when said plurality of flash units become ready for operation, comprising: a logical product circuit having inputs coupled to receive output signals from each flash unit indicative of the operatability of the flash unit and an output coupled to a single input of said camera device.
Claim 2
Dependent Claim
83 words
A multiple flash adaptor for causing a plurality of flash units to simultaneously emit light in response to actuation by a single camera device, said camera device detecting electrical signals produced by said plurality of flash units when said plurality of flash units become ready for operation, comprising: a logical product circuit having inputs coupled to receive output signals from each flash unit indicative of the operatability of the flash unit and an output coupled to a single input of said camera device.
References Cited (Backward Citations)
US4174896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |