US4124857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera
Assignee: Individual
•
Filing: 1977-02-18
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Granted: 1978-11-07
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Expires: 1997-02-18
Abstract
Abstract A camera with a varifocal objective is equipped with an indicator which signals the existence of a condition unsuitable for the taking of pictures because of the risk of blurring, especially when the camera is held by hand, as where a large focal length is chosen together with a long exposure time. The indicator is overridden upon reduction of the risk by certain precautionary measures, including the use of a self-timer which generally involves placement of the camera on a stable support.
Inventors
- 👤 Raimund Hauser
- 👤 Harald Wessner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:59
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/10; G03B17/00; G03B17/18; G03B19/00; G03B19/18; G03B2217/00; G03B2217/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
In a camera provided with objective means, trigger means for exposing a photosensitive element to light from said objective means, and exposure-time-setting means for selecting a desired exposure time, in combination: indicator means operatively coupled with said exposure-time-setting means for signaling an exposure time conducive to blurring due to camera unsteadiness; ancillary exposure-controlling means whose use reduces the risk of such blurring; operating means for optionally activating said ancillary exposure-controlling means; and overriding means in said housing coupled with said operating means for preventing actuation of said indicator means upon activation of said ancillary exposure-controlling means.
Claim 2
Dependent Claim
96 words
In a camera provided with objective means, trigger means for exposing a photosensitive element to light from said objective means, and exposure-time-setting means for selecting a desired exposure time, in combination: indicator means operatively coupled with said exposure-time-setting means for signaling an exposure time conducive to blurring due to camera unsteadiness; ancillary exposure-controlling means whose use reduces the risk of such blurring; operating means for optionally activating said ancillary exposure-controlling means; and overriding means in said housing coupled with said operating means for preventing actuation of said indicator means upon activation of said ancillary exposure-controlling means.
Claim 3
Dependent Claim
14 words
The combination defined in claim 1 wherein said ancillary exposure-controlling means comprises a self-timer.
Claim 4
Dependent Claim
23 words
The combination defined in claim 2 wherein said operating means comprises a lever, said overriding means including a switch coacting with said lever.
Claim 5
Dependent Claim
46 words
The combination defined in claim 1, further comprising adjusting means for varying the focal length of said objective means, said indicator means being jointly controlled by said exposure-time setting means and said adjusting means for actuation only with focal lengths and exposure times exceeding predetermined values.
References Cited (Backward Citations)
US3605596A
Cited
US3714878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |