Patent US4452926A successfully refreshed from Google Patents.
US4016584A
Expired / Lapsed
US
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Shutter charge device for lens shutter in a camera having a focal plane shutter and permitting lens interchange
Assignee: Nikon Corp
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Filing: 1975-11-12
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Granted: 1977-04-05
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Expires: 1995-11-12
Abstract
Abstract A shutter charge device for lens shutter is mountable and dismountable to a camera which has a focal plane shutter and permits lens interchangeability. The device has a camera side connector member provided on a film advance shaft, the camera having mountable thereto a lens incorporating therein a lens shutter having a shutter charge lever projected outwardly of the lens barrel. The shutter charge device comprises a charge member engageable with the shutter charge lever of the camera to displace the latter lever and charge the lens shutter, and movement transmitting means adapted to be coupled to the connector member upon mounting of the shutter charge device to the camera to transmit the movement of the connector member to the charge member during film advance operation in the camera thereby to displace the charge member to a lens shutter charging position.
Inventors
- 👤 Akihiko Sato
- 👤 Yoshiyuki Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:59
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/66; G03B17/00; G03B17/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
130 words
A shutter charge device for a lens shutter incorporated with a lens and lens barrel and having a shutter charge lever projecting outwardly of the lens barrel, the shutter charge device being mountable and dismountable on a camera which has a focal plane shutter and a connector member provided on a film advance shaft, the shutter charge device comprising: a charge member engageable with said shutter charge lever to displace the latter and charge said lens shutter; and movement transmitting means adapted to be coupled to said connector member upon mounting of said shutter charge device to said camera to transmit the movement of said connector member to said charge member during film advance operation in said camera thereby to displace said shutter charge lever and charge said lens shutter.
Claim 2
Dependent Claim
130 words
A shutter charge device for a lens shutter incorporated with a lens and lens barrel and having a shutter charge lever projecting outwardly of the lens barrel, the shutter charge device being mountable and dismountable on a camera which has a focal plane shutter and a connector member provided on a film advance shaft, the shutter charge device comprising: a charge member engageable with said shutter charge lever to displace the latter and charge said lens shutter; and movement transmitting means adapted to be coupled to said connector member upon mounting of said shutter charge device to said camera to transmit the movement of said connector member to said charge member during film advance operation in said camera thereby to displace said shutter charge lever and charge said lens shutter.
Claim 3
Dependent Claim
30 words
A shutter charge device according to claim 1, wherein said movement transmitting means comprise means for translating rotary movement of said connector member to linear movement of said charge member.
Claim 4
Dependent Claim
101 words
A shutter charge device according to claim 2, wherein said translating means include a shaft, a crank arm, a pin and a lever, said shaft being rotatable upon rotation of said connector member and being connected to said crank arm to rotate same about the axis of said shaft, said pin being mounted on said crank arm and displaced from said shaft wherefore rotation of said crank arm rotates said pin about the axis of said shaft, said pin engaging said lever to shift same linearly upon rotation of said crank arm, and means connecting said lever and said charge member.
Claim 5
Dependent Claim
27 words
A shutter charge device according to claim 2, wherein guide means are provided for guiding linear movement of said charge member effected by said movement transmitting means.
Claim 6
Dependent Claim
48 words
A shutter charge device according to claim 4, wherein said guide means include pin means and slot means, one of said last two means being formed on said charge member and said last two means being in mutual engagement to guide the linear movement of said charge member.
Claim 7
Dependent Claim
33 words
A shutter charge device according to claim 2, wherein said movement transmitting means include reduction means whereby said charge member completes one linear cycle for each predetermined angular movement of said connector member.
References Cited (Backward Citations)
US2736251A
Cited
US2791164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |