US4226518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic camera having long focal length objective
Assignee: Individual
•
Filing: 1979-05-11
•
Granted: 1980-10-07
•
Expires: 1999-05-11
Abstract
Abstract In a photographic camera having a long focal length objective, both the objective and a tubular viewfinder extend vertically upwardly adjacent one another from the film carrying part of the camera which facilitates support of the camera in use. Preferably the objective and viewfinder are formed as a periscope arrangement with the light-admitting end of the objective being higher than the eyepiece of the viewfinder.
Inventors
- 👤 Ferdinand Kellner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:23
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/12; G02; G02B; G02B23/00; G02B23/02; G02B23/08; G03B17/00; G03B17/48
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
Portable photographic camera apparatus comprising a tubular objective of long focal length having a light-admitting end and a film carrier end, a tubular viewfinder having a junction with said objective between said film carrier end and said light-admitting end, said viewfinder being positioned adjacent said objective, said viewfinder and said objective having parallel longitudinal axes throughout most of their lengths, said viewfinder extending from said junction towards said one end of said objective and terminating in an eyepiece located longitudinally between said carrier end and said light-admitting end of said objective, and a light deflecting mirror means at the junction between said objective and said viewfinder for directing light rays from said light-admitting opening to said eyepiece.
Claim 2
Dependent Claim
117 words
Portable photographic camera apparatus comprising a tubular objective of long focal length having a light-admitting end and a film carrier end, a tubular viewfinder having a junction with said objective between said film carrier end and said light-admitting end, said viewfinder being positioned adjacent said objective, said viewfinder and said objective having parallel longitudinal axes throughout most of their lengths, said viewfinder extending from said junction towards said one end of said objective and terminating in an eyepiece located longitudinally between said carrier end and said light-admitting end of said objective, and a light deflecting mirror means at the junction between said objective and said viewfinder for directing light rays from said light-admitting opening to said eyepiece.
Claim 3
Dependent Claim
15 words
The apparatus as defined in claim 1 wherein said viewfinder is detachable from said objective.
Claim 4
Dependent Claim
19 words
The apparatus as defined in claim 1 or 2 wherein said viewfinder is in the form of a periscope.
Claim 5
Dependent Claim
51 words
The apparatus of claim 1 including a light-admitting opening at said light-admitting end of the objective, said opening having an axis substantially perpendicular to the length of the objective and a further light deflecting mirror means at said light-admitting end for directing light from said opening towards said film carrier end.
Claim 6
Independent Claim
37 words
The apparatus of claims 1, 2 or 4 further comprising a support element secured to said film carrier end and strap means secured to said support element for supporting the camera on the body of a photographer.
References Cited (Backward Citations)
GB191503549A
Cited
US1492583A
Cited
US2165512A
Cited
US2370611A
Cited
US2907253A
Cited
US3008396A
Cited
DE1145377B
Cited
US3914032A
Cited
US4037238A
Cited
US4131354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |