Patent US4198149A successfully refreshed from Google Patents.
US4198149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking shutter speed dial device for a camera
Assignee: Pentax Corp
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Filing: 1977-09-07
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Granted: 1980-04-15
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Expires: 1997-09-07
Abstract
Abstract A camera is provided with a locking shutter speed dial device wherein the shutter release member is mounted coaxially with the shutter speed dial. A spring biased lock lever is positioned to engage a peripheral groove in the shutter release member. Engagement of the lock lever with the groove is accomplished by a pin mounted on the bottom of the shutter speed dial. When the shutter speed dial is rotated to the lock position, the pin urges the lock lever against the spring bias into engagement with the groove thereby preventing inadvertent operation of the shutter release.
Inventors
- 👤 Katsuhiko Nomura
- 👤 Keisuke Haraguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:33
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
53 words
In a camera having a shutter release operating member coaxially mounted with a shutter speed dial, the improvement comprising: means for locking said shutter release operating member, and a shutter speed dial interconnecting member, said means and said interconnecting member being engageable with each other by rotating said dial to a predetermined position.
Claim 2
Dependent Claim
53 words
In a camera having a shutter release operating member coaxially mounted with a shutter speed dial, the improvement comprising: means for locking said shutter release operating member, and a shutter speed dial interconnecting member, said means and said interconnecting member being engageable with each other by rotating said dial to a predetermined position.
Claim 3
Dependent Claim
36 words
The improvement as recited in claim 1 wherein said shutter release operating member is provided with a groove and said means comprises a lock lever positioned to engage said groove when engaged by said interconnecting member.
Claim 4
Dependent Claim
22 words
The improvement as recited in claim 2 wherein said shutter release operating member is cylindrical and said groove is a peripheral groove.
Claim 5
Dependent Claim
56 words
The improvement as recited in claim 2 wherein said lock lever is spring biased out of engagement with said groove and said interconnecting member is a pin mounted on the bottom of said shutter speed dial, said pin urging said lock lever into engagement with said groove when said dial is rotated to said predetermined position.
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) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |