Patent US3579864A successfully refreshed from Google Patents.
US3579864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching device
Assignee: Individual
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Filing: 1969-03-04
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Granted: 1971-05-25
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Expires: 1989-03-04
Abstract
Abstract A response display system which is compatible to data processing and computer systems is described. The device displays information as the result of a particular inquiry such as in a learning system, teaching system, a game, or a directory. The display employs a multiple-leaf answer response sheet. An intermediate surface on the answer sheet is provided with response characters which are ordinarily concealed but may be silhouetted upon illumination by lamps placed in selected registration with the response characters. A matrix device is used to key punch data processing cards. Several embodiments are shown.
Inventors
- 👤 Sheldon Littwin
- 👤 Alexander Schure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:41
CPC Classifications
G; G09; G09B; G09B7/00; G09B7/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
229 words
In a system wherein an electrical master matrix is arranged in registration with a card overlying the matrix, said card having printed thereon question characters corresponding to a question to be answered and a plurality of prescored answer areas arranged in selected registration with the question characters, said answer areas to be pierced by an electrically conducting probe selecting an answer to a question to permanently record the chosen answer on the card by severance of a prescored area from the card and electrically contact the underlying matrix, the improvement comprising a housing having located thereon a plurality of light isolated lamps in preselected alignment and a multiple-leaf answer sheet overlying the lamps and being sufficiently thin and transparent to pass light from the lamps therethrough, said sheet having on an intermediate surface concealed silhouettable answer characters corresponding with the answer areas on the card overlying the matrix and with the concealed silhouettable answers in selected registration with the lamps, and means for selectively interconnecting the electrical matrix with the lamps and the probe to illuminate a lamp positioned in registration with a concealed silhouettable answer and reveal the probe selected answer, said multiple-leaf sheet including a top leaf and a bottom leaf, said top leaf being provided with question characters corresponding to a question to be answered and suggested answer characters in general registration with the concealed answers.
Claim 2
Dependent Claim
229 words
In a system wherein an electrical master matrix is arranged in registration with a card overlying the matrix, said card having printed thereon question characters corresponding to a question to be answered and a plurality of prescored answer areas arranged in selected registration with the question characters, said answer areas to be pierced by an electrically conducting probe selecting an answer to a question to permanently record the chosen answer on the card by severance of a prescored area from the card and electrically contact the underlying matrix, the improvement comprising a housing having located thereon a plurality of light isolated lamps in preselected alignment and a multiple-leaf answer sheet overlying the lamps and being sufficiently thin and transparent to pass light from the lamps therethrough, said sheet having on an intermediate surface concealed silhouettable answer characters corresponding with the answer areas on the card overlying the matrix and with the concealed silhouettable answers in selected registration with the lamps, and means for selectively interconnecting the electrical matrix with the lamps and the probe to illuminate a lamp positioned in registration with a concealed silhouettable answer and reveal the probe selected answer, said multiple-leaf sheet including a top leaf and a bottom leaf, said top leaf being provided with question characters corresponding to a question to be answered and suggested answer characters in general registration with the concealed answers.
Claim 3
Dependent Claim
75 words
The device as recited in claim 1 wherein the housing is provided with a recessed slide bar, with the matrix and lamps being mounted to the bar with the bar being slidable along the housing with the matrix in registration below the card and the lamps in registration below the multiple-leaf answer sheet with the bar being movable with successive indent positions corresponding to the questions to be answered and answer characters on the sheet.
Claim 4
Dependent Claim
53 words
The device as recited in claim 1 wherein the intermediate surface having said concealed silhouettable answer characters is further provided with camouflaging characters having a selected light wavelength-transmitting characteristic and wherein said lamps provide illumination predominently with said selected light wavelength to observe the concealed silhouettable answers substantially free of said camouflaging characters.
Claim 5
Dependent Claim
59 words
The device as recited in claim 1 wherein the intermediate surface is provided with camouflaging characters having a selected light wavelength-transmitting characteristic and a light filtering material placed over the lamps, said light filtering material being chosen to transmit pRedominently the light of the wavelength of the camouflaging characters to observe the silhouettable answers free of said camouflaging characters.
Claim 6
Dependent Claim
25 words
The device as recited in claim 4 wherein the light filtering material is placed between the lamps and the intermediate surface of the multiple-leaf sheet.
Claim 7
Dependent Claim
48 words
The device as recited in claim 1 wherein said intermediate surface is further provided with camouflaging characters having a selected color for transmitting predominently light of the same color passing through the multiple-leaf sheet and light means for effectively removing said camouflaging characters and reveal the concealed answers.
Claim 8
Dependent Claim
43 words
The device as recited in claim 1 wherein the selective interconnecting means further includes latching circuit means actuated by the probe contacting of the matrix for retaining illumination of a selected lamp after the probe has been removed from contact with the matrix.
Claim 9
Dependent Claim
128 words
The device as recited in claim 1 wherein the housing partially encloses an open-ended chamber with the opening of the chamber opposite the multiple-leaf sheet and a diaphanous multiple-leaf support overlying the opening and selectively spaced from the open end of the chamber to define a slide receiving channel between the housing and the support, a slide positioned in the channel and spanning the open chamber end and held with detent retention to the housing and being traversable over the chamber opening along the channel with successive index positions, said slide being provided with light isolated recesses spaced at intervals corresponding with concealed silhouettable answers associated with a question and wherein the lamps are mounted in the slide recesses for illuminating the multiple-leaf sheet through the diaphanous support.
Claim 10
Dependent Claim
115 words
The device as recited in claim 1 wherein the housing partially encloses an open-ended chamber with the opening of the chamber opposite the multiple-leaf sheet, with the lamps located in the chamber in alignment with concealed silhouettable answers associated with a question, an apertured mask overlying the multiple-leaf sheet and of substantially greater size than the open end of the chamber with the apertures in the mask aligned with the concealed silhouettable answers associated with a question, a feed roller and a spring-loaded takeup roller with the rollers located at opposite ends of the chamber opening, with the mask mounted on said rollers to permit relative movement of the mask apertures past the multiple-leaf sheet.
Claim 11
Dependent Claim
57 words
The device as recited in claim 9 and further including a slide guiding groove located in the housing and running along the multiple-leaf sheet between the rollers and an apertured slide affixed to the mask with the mask apertures in registration with the apertures in the slide, and means for slidably retaining the slide within the groove.
Claim 12
Dependent Claim
29 words
The device as recited in claim 10 wherein the slidable retaining means includes a detect retention device affixed to the slide for successive index positioning thereof along the groove.
Claim 13
Dependent Claim
127 words
The device as recited in claim 1 wherein the housing is provided with a rotary multiple contact switch and a centrally located spindle supporting the switch, said switch being recess mounted in the housing with the contacts angularly distributed about the spindle at selected radial locations, a key affixed at a selected radial and angular location of the spindle and being rotatable therewith, said key and spindle protruding above a surface of the housing, said multiple-leaf answer sheet being mounted over the switch and over the surface of the housing and provided with a spindle-receiving aperture and a key-receiving aperture to permit mounting over the spindle with selected angular position commensurate with the location of the key, said sheet being rotatable with the spindle of the switch.
Claim 14
Dependent Claim
63 words
The device as recited in claim 12 wherein the multiple-leaf sheet is provided at an intermediate surface thereof with concealed silhouEttable answer characters arranged in rows extending radially from the spindle aperture with rows of characters being angularly distributed about the spindle aperture and wherein the lamps are arranged in recessed position on the housing along a line extending radially from the spindle.
Claim 15
Independent Claim
22 words
The device as recited in claims 13 wherein the matrix is recess mounted to the housing in selected registration with the lamps.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |