Patent US3881813A successfully refreshed from Google Patents.
US3881813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder for microforms in microimage retrieving apparatus
Assignee: Agfa Gevaert AG
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Filing: 1973-04-20
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Granted: 1975-05-06
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Expires: 1993-04-20
Abstract
Abstract A reader for microforms wherein the holder for one or more microforms consists of a carriage which is movable in a horizontal plane relative to the projection lens in the housing and a flat receptacle which is movable in and is separable from the carriage. The receptacle has a frame and a transparent base plate which supports one or more microforms and is mounted directly in the base, in a bearing member which is rotatable in the frame, or in a bottom wall which is pivotable relative to the frame. A transparent top plate is attached to the carriage or to the frame of the receptacle to normally overlie one or more microforms on the base plate.
Inventors
- 👤 Albert Maier
- 👤 Gunther Luder
- 👤 Josef Pfeifer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:04
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/115; G03B21/116
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
100 words
In an apparatus for retrieving microimages which are stored on sheet-like microforms, a combination comprising a housing for at least one projection lens; and at least one microform holder including a carriage mounted in said housing for movement in at least one diRection, and a flat receptacle separably supported by said carriage, said receptacle including a microform supporting light-transmitting base plate, a frame and an apertured bottom wall mounted in said frame for pivotal movement about an axis located in the general plane of said base plate, said base plate being mounted in and being pivotable with said bottom wall.
Claim 2
Dependent Claim
100 words
In an apparatus for retrieving microimages which are stored on sheet-like microforms, a combination comprising a housing for at least one projection lens; and at least one microform holder including a carriage mounted in said housing for movement in at least one diRection, and a flat receptacle separably supported by said carriage, said receptacle including a microform supporting light-transmitting base plate, a frame and an apertured bottom wall mounted in said frame for pivotal movement about an axis located in the general plane of said base plate, said base plate being mounted in and being pivotable with said bottom wall.
Claim 3
Dependent Claim
28 words
A combination as defined in claim 1 wherein said receptacle further comprises locating means for maintaining at least one microform in a predetermined position on said base plate.
Claim 4
Dependent Claim
24 words
A combination as defined in claim 1 wherein said holder further comprises a top plate overlying said base plate and consisting of light-transmitting material.
Claim 5
Dependent Claim
41 words
A combination as defined in claim 3, further comprising means for articulately connecting said top plate with said carriage so that the top plate is pivotable to and from a position in which it overlies a microform on said base plate.
Claim 6
Dependent Claim
35 words
A combination as defined in claim 3, wherein said top plate is articulately connected to said frame and is movable to and from a position in which it overlies a microform on said base plate.
Claim 7
Dependent Claim
33 words
A combination as defined in claim 1 wherein said receptacle further comprises a plurality of elastic locating elements for maintaining at least one microform in a predetermined position relative to said base plate.
Claim 8
Dependent Claim
16 words
A combination as defined in claim 6, wherein said locating elements are provided on said frame.
Claim 9
Dependent Claim
24 words
A combination as defined in claim 1, wherein said carriage comprises elongated guide means and said receptacle is movable lengthwise of said guide means.
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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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |