US3879741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermediate ring for interlocking an aperture ring with an exposure meter
Assignee: Nikon Corp
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Filing: 1973-09-04
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Granted: 1975-04-22
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Expires: 1993-09-04
Abstract
Abstract An intermediate ring assembly is employed for insertion between a camera body having a meter interlocking member interlocking with an exposure meter contained in the camera body and an interchangeable lens having an aperture ring with an aperturering interlocking member secured thereto. The intermediate ring assembly includes a first coupling portion for connection with the camera body, a second coupling portion for connection with the interchangeable lens, a rotatable ring rotatably mounted on the intermediate ring body, a first interlocking means adapted for connection with the meter interlocking member of the camera body upon connection between the intermediate ring assembly and the camera body, and a second interlocking means supported on the rotatable ring, movable with respect thereto and biased toward the axis of rotation of the rotatable ring, for engaging the aperture-ring interlocking member after connection between the intermediate ring assembly and the interchangeable lens.
Inventors
- 👤 Yutaka Saito
- 👤 Kunihiro Fukino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:52
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/12; G03B17/14; G03B17/42; G03B7/00; G03B7/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
188 words
An intermediate ring assembly for insertion between a camera body containing an exposure meter and having a meter interlocking member coupled to said exposure meter and an interchangeable lens having an aperture ring and an aperture-ring interlocking member secured to said aperture ring for connection with said meter interlocking member when the interchangeable lens is mounted on the camera body, said intermediate ring assembly comprising: an intermediate ring body having a first coupling portion adapted for connection with said camera body and a second coupling portion adapted for connection with the interchangeable lens; a rotatable ring rotatably mounted on the intermediate ring body; a first interlocking means secured to the rotatable ring for connection with the meter interlocking member when the intermediate ring body and the camera body are connected together; and a second interlocking means supported on the rotatable ring and movable with respect thereto for engaging the aperture-ring interlocking member when the intermediate ring body and the interchangeable lens are connected together, said second interlocking means being biased toward the axis of rotation of the rotatable ring, and being movable away from said axis of rotation.
Claim 2
Dependent Claim
188 words
An intermediate ring assembly for insertion between a camera body containing an exposure meter and having a meter interlocking member coupled to said exposure meter and an interchangeable lens having an aperture ring and an aperture-ring interlocking member secured to said aperture ring for connection with said meter interlocking member when the interchangeable lens is mounted on the camera body, said intermediate ring assembly comprising: an intermediate ring body having a first coupling portion adapted for connection with said camera body and a second coupling portion adapted for connection with the interchangeable lens; a rotatable ring rotatably mounted on the intermediate ring body; a first interlocking means secured to the rotatable ring for connection with the meter interlocking member when the intermediate ring body and the camera body are connected together; and a second interlocking means supported on the rotatable ring and movable with respect thereto for engaging the aperture-ring interlocking member when the intermediate ring body and the interchangeable lens are connected together, said second interlocking means being biased toward the axis of rotation of the rotatable ring, and being movable away from said axis of rotation.
Claim 3
Dependent Claim
188 words
An intermediate ring assembly for insertion between a camera body containing an exposure meter and having a meter interlocking member coupled to said exposure meter and an interchangeable lens having an aperture ring and an aperture-ring interlocking member secured to said aperture ring for connection with said meter interlocking member when the interchangeable lens is mounted on the camera body, said intermediate ring assembly comprising: an intermediate ring body having a first coupling portion adapted for connection with said camera body and a second coupling portion adapted for connection with the interchangeable lens; a rotatable ring rotatably mounted on the intermediate ring body; a first interlocking means secured to the rotatable ring for connection with the meter interlocking member when the intermediate ring body and the camera body are connected together; and a second interlocking means supported on the rotatable ring and movable with respect thereto for engaging the aperture-ring interlocking member when the intermediate ring body and the interchangeable lens are connected together, said second interlocking means being biased toward the axis of rotation of the rotatable ring, and being movable away from said axis of rotation.
Claim 4
Dependent Claim
188 words
An intermediate ring assembly for insertion between a camera body containing an exposure meter and having a meter interlocking member coupled to said exposure meter and an interchangeable lens having an aperture ring and an aperture-ring interlocking member secured to said aperture ring for connection with said meter interlocking member when the interchangeable lens is mounted on the camera body, said intermediate ring assembly comprising: an intermediate ring body having a first coupling portion adapted for connection with said camera body and a second coupling portion adapted for connection with the interchangeable lens; a rotatable ring rotatably mounted on the intermediate ring body; a first interlocking means secured to the rotatable ring for connection with the meter interlocking member when the intermediate ring body and the camera body are connected together; and a second interlocking means supported on the rotatable ring and movable with respect thereto for engaging the aperture-ring interlocking member when the intermediate ring body and the interchangeable lens are connected together, said second interlocking means being biased toward the axis of rotation of the rotatable ring, and being movable away from said axis of rotation.
Claim 5
Dependent Claim
29 words
An intermediate ring assembly as set forth in claim 1, wherein the second interlocking means is pivotably mounted on the rotatable ring and is pivotable about a second axis.
Claim 6
Dependent Claim
29 words
An intermediate ring assembly as set forth in claim 1, wherein the second interlocking means is pivotably mounted on the rotatable ring and is pivotable about a second axis.
Claim 7
Dependent Claim
21 words
An intermediate ring assembly as set forth in claim 2, wherein said second axis is substantially tangential to said rotatable ring.
Claim 8
Dependent Claim
29 words
An intermediate ring assembly as set forth in claim 1, further including a spring for biasing said second interlocking means toward said axis of rotation of the rotatable ring.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |