US4047210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera with an electronic timer and including an electro-mechanical delayed action stop for the shutter drive
Assignee: Hittech Prontor GmbH
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Filing: 1975-06-19
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Granted: 1977-09-06
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Expires: 1995-06-19
Abstract
Abstract A camera is provided having an electronic timer controlled by ambient light. There is provided an electromechanical delayed action stop for the shutter. An electronic delay device is provided for temporarily delaying the action of the shutter of the camera after it has been released. An electronic switching device is provided including a signal lamp which is connected to the two poles of a battery. The switching device is so controlled in dependence upon the action of the delay device tht the signal lamp emits a distinctive light signal during the action of the delaying device and the subsequent exposure. A flashing circuit is arranged to provide a flashing signal during the delay period, the circuit being arranged to operate the lamp continuously during the exposure period.
Inventors
- 👤 Winfried Espig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:36
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/64; G03B7/00; G03B7/08; G03B7/081; G03B7/083
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
137 words
A camera having an electronic timer controlled by ambient light including an electro-mechanical delayed action stop for the shutter to stop the action of the shutter upon shutter release, an electronic delay device for delaying temporarily the action of the shutter after shutter release, and electronic switching means, including a battery-energizable signal lamp, responsive to the action of said delay device, and having means electronically controlled in dependence upon the action of said delay device for specifically generating distinctive and different light signals via said lamp respectively during the action of said delay device and the subsequent exposure period whereby to indicate to the operator the corresponding state of the shutter action continuously throughout the duration of the shutter operation upon shutter release and during both the action of said delay device and the subsequent exposure period.
Claim 2
Dependent Claim
137 words
A camera having an electronic timer controlled by ambient light including an electro-mechanical delayed action stop for the shutter to stop the action of the shutter upon shutter release, an electronic delay device for delaying temporarily the action of the shutter after shutter release, and electronic switching means, including a battery-energizable signal lamp, responsive to the action of said delay device, and having means electronically controlled in dependence upon the action of said delay device for specifically generating distinctive and different light signals via said lamp respectively during the action of said delay device and the subsequent exposure period whereby to indicate to the operator the corresponding state of the shutter action continuously throughout the duration of the shutter operation upon shutter release and during both the action of said delay device and the subsequent exposure period.
Claim 3
Dependent Claim
54 words
A camera according to claim 1 wherein said electronic switching means includes means responsive to the action of said delay device by which said lamp is lighted intermittently during the action of said delay device and is lighted continuously upon completion of the action of said delay device and during the subsequent exposure period.
Claim 4
Dependent Claim
53 words
A camera according to claim 2 wherein said electronic switching means comprises a flashing circuit energizable by a battery, and means responsive to the action of said delay device for changing the flashing circuit upon completion of the action of said delay device into a stable state whereby said lamp is lighted continuously.
Claim 5
Dependent Claim
61 words
A camera according to claim 3 wherein said electronic switching means includes a change-over switch having one contact position to connect said delay for energization by the battery and another contact position arranged to disconnect said delay device in response to the action of said delay device and in turn to suppress said flashing circuit whereby said lamp is lighted continuously.
Claim 6
Dependent Claim
81 words
A camera according to claim 3 including a first transistor and a complementary second transistor, said second transistor being responsive to the action of said delay device and arranged to render operative said first transistor only upon completion of the action of said delay device, and said second transistor being changed from non-conductive to conductive condition only upon the completion of the action of said delay device and in turn rendering operative said first transistor whereby said lamp is lighted continuously.
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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |