US3834800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projector viewer with indicating device
Assignee: DIETZEN CORP
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Filing: 1973-04-30
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Granted: 1974-09-10
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Expires: 1993-04-30
Abstract
Abstract A projector viewer adapted to read microfiche transparencies through a projection onto a screen with an indicator device embodying a transparent sheet with index markings. A longitudinally flexible, laterally rigid transparent strip is connected to a carriage assembly which bears the microfiche between glass plates. The strip moves behind the transparent sheet and bears position indicating means coordinating the index markings with the respective frames of the microfiche.
Inventors
- 👤 P Brownscombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:23
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/115; G03B21/116
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
A movable carriage assembly and position indicator therefor for a reader for a film having a plurality of image frames and held flatly between transparent plates comprising a base having a top wall and a front wall with a transparent sheet bearing index markings, a back panel behind and spaced from said front wall and defining with said front wall a narrow passageway movable, carriage means for said transparent plates mounted on the upper portion of said base for substantially planar movement of said plates, and a longitudinally flexible and laterally rigid strip attached at one end thereof to said carriage and extending across said top wall and into said passageway with the opposite end portion of said strip behind said transparent sheet to facilitate positioning of said carriage means for projection of a particular image frame of the film by noting the position of an indexing means on said opposite end portion relative to said index markings.
Claim 2
Dependent Claim
158 words
A movable carriage assembly and position indicator therefor for a reader for a film having a plurality of image frames and held flatly between transparent plates comprising a base having a top wall and a front wall with a transparent sheet bearing index markings, a back panel behind and spaced from said front wall and defining with said front wall a narrow passageway movable, carriage means for said transparent plates mounted on the upper portion of said base for substantially planar movement of said plates, and a longitudinally flexible and laterally rigid strip attached at one end thereof to said carriage and extending across said top wall and into said passageway with the opposite end portion of said strip behind said transparent sheet to facilitate positioning of said carriage means for projection of a particular image frame of the film by noting the position of an indexing means on said opposite end portion relative to said index markings.
Claim 3
Dependent Claim
31 words
An assembly as claimed in claim 1, said top plate and said back panel being connected by a rounded corner over which said strip passes in its movement in said passageway.
Claim 4
Dependent Claim
33 words
An assembly as claimed in claim 1, said strip comprising a row of side-by-side, rectangular, rigid, cross bars secured to a longitudinal, flexible strip extending along the bottom side of said cross bars.
Claim 5
Dependent Claim
185 words
A microfiche reader assembly comprising a base member having an upper support member with an aperture for projecting a light beam therethrough, carriage means mounted on said support member for movements in all directions in a plane perpendicular to the light beam relative to said support member, a pair of superposed transparent plates mounted on said carriage means for movement across said aperture, said transparent plates adapted to hold flatly therebetween a microfiche having a plurality of image frames in grid arrangement, a front wall on said base member including a backing plate and a front plate with a space therebetween, said front plate including a translucent or transparent panel having markings corresponding to said grid arrangement, a longitudinally flexible and laterally rigid strip attached at one end to said carriage means and extending into said space in the front panel behind said translucent or transparent panel, and said strip having position indicating means coordinating said markings with the respective frames of said microfiche, whereby said markings and indicating means can be useD to position said carriage means for projection of a desired image frame.
Claim 6
Dependent Claim
185 words
A microfiche reader assembly comprising a base member having an upper support member with an aperture for projecting a light beam therethrough, carriage means mounted on said support member for movements in all directions in a plane perpendicular to the light beam relative to said support member, a pair of superposed transparent plates mounted on said carriage means for movement across said aperture, said transparent plates adapted to hold flatly therebetween a microfiche having a plurality of image frames in grid arrangement, a front wall on said base member including a backing plate and a front plate with a space therebetween, said front plate including a translucent or transparent panel having markings corresponding to said grid arrangement, a longitudinally flexible and laterally rigid strip attached at one end to said carriage means and extending into said space in the front panel behind said translucent or transparent panel, and said strip having position indicating means coordinating said markings with the respective frames of said microfiche, whereby said markings and indicating means can be useD to position said carriage means for projection of a desired image frame.
Claim 7
Dependent Claim
31 words
As assembly as claimed in claim 4, said base plate and said back panel being connected by a rounded corner over which said strip passes in its movement in said passageway.
Claim 8
Dependent Claim
33 words
An assembly as claimed in claim 4, said strip comprising a row of side-by-side, rectangular, rigid, cross bars secured to a longitudinal, flexible strip extending along the bottom sides of said cross bars.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |