US3690753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data storage system
Assignee: Individual
•
Filing: 1970-01-02
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Granted: 1972-09-12
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Expires: 1990-01-02
Abstract
Abstract An apertured frame including side and bottom tab sections for holding a microfilm data sheet for filing with others and for use individually in combination with a microfilm reader having a transparent base to support the frame and a transparent upper flat to fit the frame aperture and hold the microfilm data in position for viewing.
Inventors
- 👤 Ernest A Dahl Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:11
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/115
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
353 words
The combination of a centrally apertured and generally rectangular magnetizable frame member holding a microfilm sheet and adapted for storate with others in a file container with side magnet means operable to separate adjacent frame members by magnetic repulsion therebetween to facilitate location and removal of a predetermined frame member and associated microfilm sheet, said frame member comprising a generally flat rectangular face section defining an aperture symmetrical and substantially co-extensive therewith and through which data on the data sheet held by said frame member may be viewed; a first side tab section integrally formed with and extending parallel to said face section to define a first side groove having a generally U-shaped cross-section enclosing a first edge portion of the data sheet; a base tab section integrally formed with and extending parallel to said face section to define a base groove enclosing a second edge portion of the data sheet; and a second side tab section integrally formed with and extending parallel to said face section to define a second side groove having a generally Ushaped cross-section enclosing a third edge portion of the data sheet leaving the top of the face section in its planar condition and unobstructed between said first and second side tab sections permitting insertion and removal of the data sheet relative to the frame member without distortion of the data sheet; said face section, base tab section, and side tab sections forming a frame supporting the data sheet with the microfilm data bearing portion substantially coextensive with said aperture through which the data may be viewed, as in a microfilm reader, and a microfilm reader assembly comprising transparent base means for supporting the frame member and associated microfilm sheet, locating magnet means mounted in said reader assembly adjacent to said base means for positioning the frame member relative to the base means to enable the associated microfilm sheet to be read, and a transparent flat associated with said base means to fit within the symmetrical aperture of said face section to thereby hold the display area of the microfilm sheet in position relative to said base means.
Claim 2
Dependent Claim
353 words
The combination of a centrally apertured and generally rectangular magnetizable frame member holding a microfilm sheet and adapted for storate with others in a file container with side magnet means operable to separate adjacent frame members by magnetic repulsion therebetween to facilitate location and removal of a predetermined frame member and associated microfilm sheet, said frame member comprising a generally flat rectangular face section defining an aperture symmetrical and substantially co-extensive therewith and through which data on the data sheet held by said frame member may be viewed; a first side tab section integrally formed with and extending parallel to said face section to define a first side groove having a generally U-shaped cross-section enclosing a first edge portion of the data sheet; a base tab section integrally formed with and extending parallel to said face section to define a base groove enclosing a second edge portion of the data sheet; and a second side tab section integrally formed with and extending parallel to said face section to define a second side groove having a generally Ushaped cross-section enclosing a third edge portion of the data sheet leaving the top of the face section in its planar condition and unobstructed between said first and second side tab sections permitting insertion and removal of the data sheet relative to the frame member without distortion of the data sheet; said face section, base tab section, and side tab sections forming a frame supporting the data sheet with the microfilm data bearing portion substantially coextensive with said aperture through which the data may be viewed, as in a microfilm reader, and a microfilm reader assembly comprising transparent base means for supporting the frame member and associated microfilm sheet, locating magnet means mounted in said reader assembly adjacent to said base means for positioning the frame member relative to the base means to enable the associated microfilm sheet to be read, and a transparent flat associated with said base means to fit within the symmetrical aperture of said face section to thereby hold the display area of the microfilm sheet in position relative to said base means.
Claim 3
Dependent Claim
44 words
The combination as set forth in claim 1, wherein the side and base tab sections terminate short of the respective aperture defining edges of the face section permitting the transparent flat to press the display area of the microfilm sheet against the base means.
Claim 4
Dependent Claim
36 words
The combination as set forth in Claim 1 wherein: the locating magnet means forms a corner angle cooperating with a corner of said frame member to orient the same for proper reading of the microfilm sheet.
Claim 5
Dependent Claim
360 words
The combination of a frame member for holding a microfilm data sheet and a microfilm reader assembly, in which combination, said frame member comprises a generally flat rectangular face section defining an aperture symmetrical and substantially co-extensive therewith and through which data on the data sheet held by said frame member may be viewed; a first side tab section integrally formed with and extending parallel to said face section to define a first side groove having a generally U-shaped cross-section enclosing a first edge portion of the data sheet; a base tab section integrally formed with and extending parallel to said face section to define a base groove enclosing a second edge portion of the data sheet; and a second side tab section integrally formed with and extending parallel to said face section to define a second, side groove having a generally U-shaped cross-section enclosing a third edge portion of the data sheet leaving the top of the face section in its planar condition and unobstructed between said first and second side sections permitting insertion and removal of the data sheet relative to the frame member without distortion of the data sheet, said face section, base tab section, and side tab sections forming a frame supporting the data sheet with the microfilm data bearing portioN substantially coextensive with said aperture through which the data may be viewed, as in a microfilm reader, and between which first and second side tab sections there is unobstructed view of the top of the data sheet carried by the frame member across the top of the face section for clear identification thereof; and said microfilm reader assembly comprises transparent base means for supporting the frame member and associated microfilm sheet, locating magnet means mounted in said reader assembly adjacent to said base means for positioning the frame member relative to the base means to enable the associated microfilm sheet to be read, and a transparent flat associated with said base means to snugly fit within the symmetrical aperture of said face section to thereby press the display area of the microfilm sheet in position between said side tab sections relative to said base means.
Claim 6
Dependent Claim
360 words
The combination of a frame member for holding a microfilm data sheet and a microfilm reader assembly, in which combination, said frame member comprises a generally flat rectangular face section defining an aperture symmetrical and substantially co-extensive therewith and through which data on the data sheet held by said frame member may be viewed; a first side tab section integrally formed with and extending parallel to said face section to define a first side groove having a generally U-shaped cross-section enclosing a first edge portion of the data sheet; a base tab section integrally formed with and extending parallel to said face section to define a base groove enclosing a second edge portion of the data sheet; and a second side tab section integrally formed with and extending parallel to said face section to define a second, side groove having a generally U-shaped cross-section enclosing a third edge portion of the data sheet leaving the top of the face section in its planar condition and unobstructed between said first and second side sections permitting insertion and removal of the data sheet relative to the frame member without distortion of the data sheet, said face section, base tab section, and side tab sections forming a frame supporting the data sheet with the microfilm data bearing portioN substantially coextensive with said aperture through which the data may be viewed, as in a microfilm reader, and between which first and second side tab sections there is unobstructed view of the top of the data sheet carried by the frame member across the top of the face section for clear identification thereof; and said microfilm reader assembly comprises transparent base means for supporting the frame member and associated microfilm sheet, locating magnet means mounted in said reader assembly adjacent to said base means for positioning the frame member relative to the base means to enable the associated microfilm sheet to be read, and a transparent flat associated with said base means to snugly fit within the symmetrical aperture of said face section to thereby press the display area of the microfilm sheet in position between said side tab sections relative to said base means.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |