US3797925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfiche reader with indexed fiche magazine
Assignee: Ovonic Imaging Systems Inc
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Filing: 1971-11-03
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Granted: 1974-03-19
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Expires: 1991-11-03
Abstract
Abstract A microfiche reader incorporating an indexed magazine from which fiche cards are selectively extracted, positioned horizontally for viewing and returned to the magazine, all with a single lever. A second lever moves the projection lens and lamp assembly vertically relative to the fiche card, a position indicating grid showing the frame of the fiche card in projection position. The image is projected on a large viewing screen, at the side of which is a small screen showing the identification of the fiche card being viewed. An index frame carrying the contents of the specific magazine, can be moved into projection position to facilitate selection of individual cards and frames.
Inventors
- 👤 L Smitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:37
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/115
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
269 words
A microfiche reader comprising, a lower housing having a front panel, an upper housing Secured on said lower housing and having an image viewing screen therein above said front panel, a frame in said lower housing with a magazine receiving compartment in one side thereof, said front panel having an access opening for said compartment, a magazine adapted for selective positioning in said compartment and having means for holding a plurality of fiche cards therein, spaced parallel guide plates fixed in said frame, with windows therein at a projection position. positioning means including a carrier mounted on said frame for horizontal sliding motion parallel to said guide plates, said carrier having engaging means for engaging and extracting a fiche card from said magazine and moving the card past the projection position, a carriage mounted on said frame for vertical sliding motion parallel and adjacent to said guide plates, a light source on said carriage on one side of said guide plates, directed through said windows, a projection lens on said carriage on the other side of said guide plates in alignment with said light source, cooperating mirror means in said upper and lower housings for reflecting an image from said lens to said image viewing screen, an index arm extending from said carrier on the side opposite said compartment and between said guide plates, said index arm having means for holding a transparent frame of index data, and stop means in said frame for limiting motion of said carrier toward said compartment, said index arm holding the transparent frame in projection position at the stopped position of the carrier.
Claim 2
Dependent Claim
269 words
A microfiche reader comprising, a lower housing having a front panel, an upper housing Secured on said lower housing and having an image viewing screen therein above said front panel, a frame in said lower housing with a magazine receiving compartment in one side thereof, said front panel having an access opening for said compartment, a magazine adapted for selective positioning in said compartment and having means for holding a plurality of fiche cards therein, spaced parallel guide plates fixed in said frame, with windows therein at a projection position. positioning means including a carrier mounted on said frame for horizontal sliding motion parallel to said guide plates, said carrier having engaging means for engaging and extracting a fiche card from said magazine and moving the card past the projection position, a carriage mounted on said frame for vertical sliding motion parallel and adjacent to said guide plates, a light source on said carriage on one side of said guide plates, directed through said windows, a projection lens on said carriage on the other side of said guide plates in alignment with said light source, cooperating mirror means in said upper and lower housings for reflecting an image from said lens to said image viewing screen, an index arm extending from said carrier on the side opposite said compartment and between said guide plates, said index arm having means for holding a transparent frame of index data, and stop means in said frame for limiting motion of said carrier toward said compartment, said index arm holding the transparent frame in projection position at the stopped position of the carrier.
Claim 3
Dependent Claim
34 words
A microfiche reader according to claim 1, wherein said lower housing has a slot through which said index arm protrudes externally, when said carrier is at the limit of travel away from said compartment.
Claim 4
Dependent Claim
98 words
A microfiche reader according to claim 1, wherein said front panel has a translucent grid therein, with divisions corresponding to the image frames on a fiche card, a first cursor coupled to said carrier, a second cursor coupled to said carriage, said cursors being supported adjacent the rear of said grid and aligned to intersect at the grid location corresponding to the fiche frame in projection position, said light source having a lamp housing with an open portion directed to backlight said grid, and a diffuser pivotally mounted on said carriage between said lamp housing and said grid.
Claim 5
Dependent Claim
100 words
A microfiche reader according to claim 1, wherein said magazine has spacing means therein for holding fiche cards in spaced parallel relation, said compartment having indexing means for holding said magazine with a selected fiche card aligned between said guide plates, said magazine having a transparent index scale with markings corresponding to the fiche cards therein, said upper housing having an index viewing screen adjacent said image viewing screen, and means in said lower housing for projecting to said index viewing screen an image of said scale at the position of the fiche card aligned for engagement by said carrier.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |