Patent US4374356A successfully refreshed from Google Patents.
US4063263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually operated shutter attachment
Assignee: CRITCERION SCIENTIFIC INSTRUMENTS Inc
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Filing: 1976-04-15
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Granted: 1977-12-13
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Expires: 1996-04-15
Abstract
Abstract A manually operated shutter attachment includes a pair of plate members each having an aperture therethrough secured in spaced parallel relationship with the apertures aligned. A blade member having a body portion and handle portion is pivotably mounted intermediate the plate members with the handle portion extending outwardly of the spacing therebetween whereby the body portion may be pivoted into and out of registration with the aligned apertures in the plate members by manual manipulation of the handle portion. Mounting means are provided on the outer surfaces of both plate members and extend about the apertures thereof for mounting the shutter attachment intermediate a telescope and camera and/or for securing a plurality of similar shutter attachments together. The body portion of the blade member may be opaque to provide a shutter or incorporate an optical filter or lens.
Inventors
- 👤 John J. Krewalk, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:28
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/10; G03B11/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
228 words
A manually operated shutter attachment consisting essentially of: A. a pair of plate members each having an aperture therethrough of lesser width than the width of said plate members, and means securing said plate members in spaced parallel relationship with said apertures being aligned to provide a ligh passage through said shutter attachment; B. a manually movable blade member slidably disposed between said plate members and having a body portion registerable with said apertures of said plate members and a handle portion extending outwardly of said plate members for effecting manual movement of said body portion between a first position wherein said body registers with said apertures and a second position wherein said body portion is removed from registration with said apertures; C. means slidably mounting said blade member between said plate members for movement between said first and second position; D. a first mounting means on the outer surface of one of said plate members extending about the aperture thereof and adapted for securing said shutter attachment to a camera or the like; and E. a second mounting means on the outer surface of the other of said plate members extending about the aperture thereof and adapted for securing said shutter attachment to a telescope or the like, said attachment comprising an integrated independent assembly assemblable and removable as a unit from an associated telescope and camera.
Claim 2
Dependent Claim
228 words
A manually operated shutter attachment consisting essentially of: A. a pair of plate members each having an aperture therethrough of lesser width than the width of said plate members, and means securing said plate members in spaced parallel relationship with said apertures being aligned to provide a ligh passage through said shutter attachment; B. a manually movable blade member slidably disposed between said plate members and having a body portion registerable with said apertures of said plate members and a handle portion extending outwardly of said plate members for effecting manual movement of said body portion between a first position wherein said body registers with said apertures and a second position wherein said body portion is removed from registration with said apertures; C. means slidably mounting said blade member between said plate members for movement between said first and second position; D. a first mounting means on the outer surface of one of said plate members extending about the aperture thereof and adapted for securing said shutter attachment to a camera or the like; and E. a second mounting means on the outer surface of the other of said plate members extending about the aperture thereof and adapted for securing said shutter attachment to a telescope or the like, said attachment comprising an integrated independent assembly assemblable and removable as a unit from an associated telescope and camera.
Claim 3
Dependent Claim
22 words
The manually operated shutter attachment of claim 1 wherein said apertures in said plate members are circular and of substantially equal diameter.
Claim 4
Dependent Claim
28 words
The manually operated shutter attachment of claim 1 wherein said body portion of said blade member is opaque to close said light passage when in said first position.
Claim 5
Dependent Claim
40 words
The manually operated shutter attachment of claim 1 wherein said means slidably mounting said blade member comprises pivot means adjacent said apertures of said plate members pivotably mounting said blade members for pivotal movement between said first and second positions.
Claim 6
Dependent Claim
59 words
The manually operated shutter attachment of claim 1 wherein said apertures in said plate members are circular, said body portion of said blade member is opaque, and said means slidably mounting said blade member comprises pivot means adjacent said apertures of said plate members for pivotally mounting said blade member for pivotal movement between said first and second positions.
Claim 7
Dependent Claim
60 words
The manually operated shutter attachment of claim 1 further including a cooperatively assembled second set of second plate members, second blade member, slidable mounting means, and first and second mounting means, one of said mounting means of said second set being coupled to on of said mounting means of the first mentioned set with said light passages thereof in alignment.
Claim 8
Dependent Claim
21 words
The manually operated shutter attachment of claim 6 wherein said body portion of said second mentioned blade member includes a lens.
Claim 9
Dependent Claim
40 words
The manually operated shutter attachment of claim 7 wherein said second mentioned blade member projects radially and axially from the periphery of the optical surfaces of said lens whereby said optical surfaces are spaced from said second mentioned plate members.
Claim 10
Dependent Claim
22 words
The manually operated shutter attachment of claim 6 wherein said body portion of said second mentioned blade member includes an optical filter.
Claim 11
Dependent Claim
38 words
The manually operated shutter attachment of claim 9 wherein said second mentioned member projects outwardly beyond the optical surfaces of said filter about the periphery thereof whereby said optical surfaces are spaced from said second mentioned plate members.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |