US4122619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfilm-unit and magnifying-glass locket
Assignee: Individual
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Filing: 1977-09-20
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Granted: 1978-10-31
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Expires: 1997-09-20
Abstract
Abstract In a preferred embodiment, a locket portably suitable to be worn on a chain or cord around a person's neck, opens as a base and lid, of which the base supports the pivotally opening lid and also from within space thereof a microfilm support carrying removable, replaceable and disposable transparent plastic-encased microfilm viewable in magnification through a replaceable plastic magnifying glass wedge-mounted in the wall of the lid, the microfilm support being a short frame circumscribing a through space across which the microfilm is mounted, the microfilm transparent casing being stepped at its base and being mounted slidably into an insertion-slot space, and the frame being inexpensively a single structure formed into a hinge and mounting slot spring-biased outwardly to a viewing state and position from a compacted collapsed storage position down-position at which the lid is closed upon the base to form enclosure space storing the microfilm mounted on the microfilm support.
Inventors
- 👤 Bernard M. Kruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:26
CPC Classifications
G; G09; G09F; G09F3/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
169 words
A microfilm-locket device comprising in combination: a portable fold-down locket adapted for transporting microfilm mounted therein including a mounting-base structure, and including fold-down magnifying glass means adapted for optically viewing in magnification a microfilm mounted by the locket means, as a unit; the improvement comprising a microfilm encased within transparent plastic casing, and holder means mounted on the mounting-base for retainable-insertion of and supporting of the transparent plastic casing in a state and position viewable of the microfilm therein, adapted such that microfilm is protected and disposable, and said film and forward and rearward walls of the plastic casing extending in substantially parallel planes, and said casing including a step at its base, stepping from a smaller thickness of the step mountable within the frame means having a transverse wall of the step serving as a seating-abutment preventing further insertion into the frame means and providing a stabilizing support maintaining proper alignment of the microfilm with a viewing axis of the magnifying glass, when mounted within the frame means.
Claim 2
Dependent Claim
169 words
A microfilm-locket device comprising in combination: a portable fold-down locket adapted for transporting microfilm mounted therein including a mounting-base structure, and including fold-down magnifying glass means adapted for optically viewing in magnification a microfilm mounted by the locket means, as a unit; the improvement comprising a microfilm encased within transparent plastic casing, and holder means mounted on the mounting-base for retainable-insertion of and supporting of the transparent plastic casing in a state and position viewable of the microfilm therein, adapted such that microfilm is protected and disposable, and said film and forward and rearward walls of the plastic casing extending in substantially parallel planes, and said casing including a step at its base, stepping from a smaller thickness of the step mountable within the frame means having a transverse wall of the step serving as a seating-abutment preventing further insertion into the frame means and providing a stabilizing support maintaining proper alignment of the microfilm with a viewing axis of the magnifying glass, when mounted within the frame means.
Claim 3
Dependent Claim
45 words
A microfilm-locket device of claim 1, in which the frame means comprises a shallow receptacle, the receptacle walls of which provide upright support to the step received therein, upper wall surfaces of the receptacle walls providing seating support to the transverse wall of the step.
Claim 4
Dependent Claim
44 words
A microfilm-locket device of claim 2, in which the frame means includes a hinge portion and spring structure-support, the hinge portion being mounted pivotally within said mounting-base structure and said spring being mounted between each of and on the hinge portion and mounting-base structure.
Claim 5
Dependent Claim
58 words
A microfilm-locket device of claim 3, in which improvement further comprises the magnifying glass means including a frame structure having a through-aperature therethrough, and a magnifying glass having a step structure formed along a periphery thereof to a smaller predetermined breadth dimension adapted for removably wedging into said through-aperature retainably, such that the magnifying glass is intermittently replaceable.
Claim 6
Dependent Claim
15 words
A microfilm-locket device of claim 4, in which said magnifying glass is composed of plastic.
Claim 7
Dependent Claim
58 words
A microfilm-locket device of claim 1, in which improvement further comprises the magnifying glass means including a frame structure having a through-aperature therethrough, and a magnifying glass having a step structure formed along a periphery thereof to a smaller predetermined breadth dimension adapted for removably wedging into said through-aperature retainably, such that the magnifying glass in intermittently replaceable.
Claim 8
Dependent Claim
15 words
A microfilm-locket device of claim 6, in which said magnifying glass is composed of plastic.
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) | 1981-10-30 | 1982-05-01 | 1982-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-30 | 1986-05-01 | 1986-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-30 | 1990-05-01 | 1990-10-31 | $7700.00 | Window Closed / Lapsed |