Patent JPH0223669A successfully refreshed from Google Patents.
US3977092A
Expired / Lapsed
US
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Teaching machine card
Assignee: Individual
•
Filing: 1975-12-16
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Granted: 1976-08-31
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Expires: 1995-12-16
Abstract
Abstract A teaching machine utilizes a card having recorded on it visually readable statements of problems and corresponding machine readable answers. The teaching machine displays the answers to the problem on the card positioned for solution only if the student first enters the correct answer on the keyboard. The teaching machine also includes an interrogating device for counting the number of attempted solutions and the number of correct answers by the student, along with a device to display the contents of the counting device on the display.
Inventors
- 👤 Ernest R. Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:11
CPC Classifications
G; G09; G09B; G09B7/00; G09B7/02; G09B19/00; G09B19/02; G09B19/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
A record member for use in a teaching machine comprising: first and second opposing planar surfaces; a column of visibly readable statements of problems on said first planar surfaces; a column of perforated machine readable answers on said first planar surface corresponding to the problems on the column of visibly readable statements of problems; indexing means on said record member to enable incremental advancement of said record member; the machine readable answers in said column of answers being displaced from the corresponding visibly readable statement of a problem in said column of problems to impede visual decoding of the machine readable answer; a column of visibly readable statements of problems on said second planar surface; a column of machine readable answers on said second planar surface corresponding to the problems in the column of visibly readable statements on said second planar surface; the machine readable answers on said second planar surface in said column of answers on said second planar surface being displaced from the corresponding visually readable statement of a problem in said column of problems on said second planar surface.
Claim 2
Dependent Claim
182 words
A record member for use in a teaching machine comprising: first and second opposing planar surfaces; a column of visibly readable statements of problems on said first planar surfaces; a column of perforated machine readable answers on said first planar surface corresponding to the problems on the column of visibly readable statements of problems; indexing means on said record member to enable incremental advancement of said record member; the machine readable answers in said column of answers being displaced from the corresponding visibly readable statement of a problem in said column of problems to impede visual decoding of the machine readable answer; a column of visibly readable statements of problems on said second planar surface; a column of machine readable answers on said second planar surface corresponding to the problems in the column of visibly readable statements on said second planar surface; the machine readable answers on said second planar surface in said column of answers on said second planar surface being displaced from the corresponding visually readable statement of a problem in said column of problems on said second planar surface.
Claim 3
Dependent Claim
26 words
The record member according to claim 1 wherein said column of machine readable answers on said first planar side and second planar side are vertically aligned.
Claim 4
Dependent Claim
33 words
The record member according to claim 2 further comprising actuating surface means adapted to coact with switch means in a teaching machine upon proper insertion of said record member in the teaching machine.
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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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |