US3667366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic camera with built-in rangefinder
Assignee: Agfa Gevaert AG
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Filing: 1970-05-21
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Granted: 1972-06-06
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Expires: 1990-05-21
Abstract
Abstract A photographic camera wherein a plastic camera body supports the metallic casing of a built-in rangefinder and a lens mount including a focussing ring whose rotation causes displacements of a movable optical element in the rangefinder casing by way of a gear train. A shaft of the gear train drives a rotary cam which displaces the movable optical element by way of one or more levers. Alternatively, the shaft of the gear train drives a threaded shaft which effects axial movements of a nut so that the latter pivots a lever which supports the movable optical element. The connection between the shaft of the gear train and the cam or nut is such that the shaft can move radially to compensate for eventual displacements of the lens mount with reference to the casing of the rangefinder.
Inventors
- 👤 Dieter Engelsmann
- 👤 Dieter Maas
- 👤 Rolf Schroder
- 👤 Gerda Linke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:48
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/18; G03B13/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
177 words
In a photographic apparatus, a combination comprising a camera body at least the major part of which consists of synthetic plastic material; a lens mount carried by said body and including a movable focussing member; a rangefinder including a casing carried by said body and a displaceable optical element mounted in said casing, at least the major part of said casing consisting of a metallic material; and means for displacing said optical element with respect to said casing in response to movement of said focussing member, including a gearing having a first portion mounted in said lens mount and having an output element and a second portion mounted in said casing and having an input element receiving motion from said output element, at least one of said elements having limited freedom of movement with respect to the other element in order to compensate for eventual distortion of said synthetic plastic material, said first and second portions of said gearing being Respectively arranged to increase and reduce the velocity ratio between said focussing member and said optical element.
Claim 2
Dependent Claim
177 words
In a photographic apparatus, a combination comprising a camera body at least the major part of which consists of synthetic plastic material; a lens mount carried by said body and including a movable focussing member; a rangefinder including a casing carried by said body and a displaceable optical element mounted in said casing, at least the major part of said casing consisting of a metallic material; and means for displacing said optical element with respect to said casing in response to movement of said focussing member, including a gearing having a first portion mounted in said lens mount and having an output element and a second portion mounted in said casing and having an input element receiving motion from said output element, at least one of said elements having limited freedom of movement with respect to the other element in order to compensate for eventual distortion of said synthetic plastic material, said first and second portions of said gearing being Respectively arranged to increase and reduce the velocity ratio between said focussing member and said optical element.
Claim 3
Dependent Claim
21 words
A combination as defined in claim 1 further comprising coupling means including a sleeve connecting said casing to said camera body.
Claim 4
Dependent Claim
48 words
A combination as defined in claim 1, wherein said first portion of said gearing further comprises a ring gear connected with said focussing member, a pinion mating with said ring gear, and a shaft receiving torque from said pinion and arranged to transmit motion to said output element.
Claim 5
Dependent Claim
18 words
A combination as defined in claim 1, wherein said input element comprises a cam mounted on said casing.
Claim 6
Dependent Claim
42 words
A combination as defined in claim 1, further comprising a pin-and-slot connection provided between said output element and said input element to permit limited radial movements of at least one of said input and output elements with reference to the other element.
Claim 7
Dependent Claim
49 words
A combination as defined in claim 1, wherein said input element comprises a cam rotatable about a predetermined axis and said first portion of said gearing further comprises a shaft arranged to rotate in response to movement of said focussing member and to transmit torque to said output element.
Claim 8
Dependent Claim
69 words
A combination as defined in claim 1, wherein said first portion of said gearing further comprises a first shaft arranged to rotate in response to movement of said focussing member and said second portion of said gearing further comprises a second shaft operatively connected with said optical element, said input element cooperating with said output element to rotate said second shaft in response to rotation of said first shaft.
Claim 9
Dependent Claim
58 words
A combination as defined in claim 7, wherein said output and input elements are respectively secured to said first and second shafts and further comprising a pin-and-slot connection provided between said output element and said input element to permit limited radial movements of at least one of said output and input elements with respect to the other element.
Claim 10
Dependent Claim
64 words
A combination as defined in claim 7, wherein said second shaft is provided with external threads and said second portion of said gearing further comprises a nut mating with said second shaft and arranged to move axially in response to rotation of said second shaft and lever means supporting said optical element and arranged to pivot in response to axial movement of said nut.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |