US3762808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data reproduction apparatus
Assignee: Individual
•
Filing: 1971-05-17
•
Granted: 1973-10-02
•
Expires: 1991-05-17
Abstract
Abstract A film projector having its own screen and an enclosed optical system for projecting images from a predetermined area onto the screen. A cylinder is provided onto whose surface a strip of microfilm having information images is mounted. A desired information image is brought to a predetermined area for projection by said optical system by rotating and/or axially moving the cylinder. The rotation and/or axial movement is achieved with pulley systems coupled to dials which are available to the operator of the projector.
Inventors
- 👤 A Sandmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:14
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/115
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
178 words
Apparatus for selectively reproducing a portion of the information image stored on a multi-image strip of film, paper, sheet or similar material, comprising an enclosure having means providing access therein, a screen forming a portion of said enclosure, optical means mounted in said enclosure for projecting said image on said screen, a cylinder on which said image strip is mounted, a cradle for freely supporting said cylinder in association with said optical means, comprising a pair of spaced parallel rotatable shafts each having roller means adapted to frictionally engage the periphery of said cylinder means for rotating at least one of said shafts to rotate said cylinder about its central axis parallel to the axis of said shafts and including control means extending out of said enclosure for manual operation and means operable from without said enclosure to be movable into slidable abutment with at least one end of said cylinder to cause lateral shifting of said cylinder with respect to said shafts to permit selection of a predetermined one of said image portions through said optical means.
Claim 2
Dependent Claim
178 words
Apparatus for selectively reproducing a portion of the information image stored on a multi-image strip of film, paper, sheet or similar material, comprising an enclosure having means providing access therein, a screen forming a portion of said enclosure, optical means mounted in said enclosure for projecting said image on said screen, a cylinder on which said image strip is mounted, a cradle for freely supporting said cylinder in association with said optical means, comprising a pair of spaced parallel rotatable shafts each having roller means adapted to frictionally engage the periphery of said cylinder means for rotating at least one of said shafts to rotate said cylinder about its central axis parallel to the axis of said shafts and including control means extending out of said enclosure for manual operation and means operable from without said enclosure to be movable into slidable abutment with at least one end of said cylinder to cause lateral shifting of said cylinder with respect to said shafts to permit selection of a predetermined one of said image portions through said optical means.
Claim 3
Dependent Claim
42 words
The apparatus according to claim 1 wherein one of said shafts is provided with first and second pulley means of different diameter, and means coupling said pulley means to said control means whereby said shaft may be selectively rotated at different speeds.
Claim 4
Dependent Claim
48 words
The apparatus according to claim 2 wherein said control means comprise first and second coaxially arranged rotatable dials, each of said first and second dials having pulley means, and a connecting loop coupling said pulley means respectively to the first and second pulley means on said cylinDer shaft.
Claim 5
Dependent Claim
57 words
The apparatus according to claim 2 wherein the rollers of said other shaft are eccentrically mounted with respect to said other shaft and a knob is secured at the end of said other shaft extending outwardly of said enclosure whereby on rotation of said knob the distance of said cylinder to the objective lens may be changed.
Claim 6
Dependent Claim
75 words
The apparatus according to claim 1 wherein said means for causing lateral shifting of said cylinder includes a forked member axially straddling said cylinder and supported within said enclosure to reciprocate parallel to the axis of said shafts, and a third dial journalled within said enclosure and extending outwardly therefrom, and means coupling said third dial and said forked member whereby said fork may be selectively moved to translate said cylinder along its central axis.
Claim 7
Dependent Claim
68 words
The apparatus according to claim 5 wherein said third dial is journalled to rotate about a horizontal axis substantially perpendicular to the axis of the cylinder, and includes pulley means mounted about the axis of rotation and a cable connecting said pulley to said forked member, and positioning means for running said cable so as to convert said rotation of said pulley into reciprocation of said forked member.
Claim 8
Dependent Claim
27 words
The apparatus according to claim 1 wherein said optical means includes an objective lens, light means and means for reflecting light from said strip onto said lens.
Claim 9
Dependent Claim
28 words
The apparatus according to claim 7 wherein said cylinder is transparent, said strip is transparent, and said light means includes a source of light located within said cylinder.
Claim 10
Dependent Claim
31 words
The apparatus according to claim 7 wherein said light means includes a source of light located exteriorly of said cylinder and said means for reflecting light comprises a condensing arcuate reflector.
Claim 11
Dependent Claim
37 words
The apparatus according to claim 7 including mirror means for reflecting said image from said objective lens onto said screen, said mirror and objective lens being positioned so as to magnify the image incident on said screen.
Claim 12
Dependent Claim
59 words
The apparatus according to claim 7 wherein said mirror is substantially planar, and is supported at an angle to the horizontal within said enclosure by restraining means secured to said bottom of enclosure along the corresponding edge of said mirror, and at least one spring coupled to the upper edge of said mirror and the bottom of said enclosure.
Claim 13
Dependent Claim
37 words
The apparatus according to claim 11 including at least a pair of springs spaced along the edge of said mirror, said springs being relatively adjustable to vary the rate thereof and thereby the position of said mirror.
Claim 14
Dependent Claim
36 words
The apparatus according to claim 1 wherein said enclosure comprise a base and a cover, said cover being removable from said base to provide access to said cylinder for exchange of the strips and said cylinder.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |