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US3324577A
Expired / Lapsed
US
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Teaching apparatus
Assignee: Individual
•
Filing: 1966-06-03
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Granted: 1967-06-13
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Expires: 1986-06-03
Abstract
No abstract record available.
Inventors
- 👤 Richard M Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:18
CPC Classifications
G; G09; G09B; G09B3/00; G09B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A TEACHING APPARATUS COMPRISING A FRAME MEANS, A FIRST MEMBER MOVABLY MOUNTED TO SAID FRAME MEANS AND HAVING A LEVER ACTUATABLE MEANS ARRANGED IN A PREDETERMINED PATTERN, A SECOND MEMBER MOVABLY MOUNTED TO SAID FRAME MEANS AND HAVING LEVER ACTUATABLE MEANS ARRANGED IN A PREDETERMINED PATTERN, AND A LEVER MOVABLY MOUNTED TO SAID FRAME MEANS WITH SAID FIRST MEMBER BEING DISPOSED BETWEEN SAID LEVEL AND SAID SECOND MEMBER, SAID LEVER BEING MOVABLE BY THE USER TO VARIOUS ANSWERING POSITIONS THEREOF AND BEING MOVABLE FROM A SELECTED ANSWERING POSITION THEREOF TO AN ACTUATED POSITION THEREOF, SAID ANSWERING POSITIONS OF SAID LEVER BEING RELATED TO SAID PREDETERMINED PATTERNS OF SAID LEVER ACTUATABLE MEANS OF SAID MEMBERS, SAID LEVER HAVING ACTUATING MEANS FOR ALWAYS ADVANCING SAID FIRST MEMBER ONE INCREMENT OF MOVEMENT THEREOF BY ACTUATING SAID LEVER ACTUATABLE
Claim 2
Dependent Claim
135 words
A TEACHING APPARATUS COMPRISING A FRAME MEANS, A FIRST MEMBER MOVABLY MOUNTED TO SAID FRAME MEANS AND HAVING A LEVER ACTUATABLE MEANS ARRANGED IN A PREDETERMINED PATTERN, A SECOND MEMBER MOVABLY MOUNTED TO SAID FRAME MEANS AND HAVING LEVER ACTUATABLE MEANS ARRANGED IN A PREDETERMINED PATTERN, AND A LEVER MOVABLY MOUNTED TO SAID FRAME MEANS WITH SAID FIRST MEMBER BEING DISPOSED BETWEEN SAID LEVEL AND SAID SECOND MEMBER, SAID LEVER BEING MOVABLE BY THE USER TO VARIOUS ANSWERING POSITIONS THEREOF AND BEING MOVABLE FROM A SELECTED ANSWERING POSITION THEREOF TO AN ACTUATED POSITION THEREOF, SAID ANSWERING POSITIONS OF SAID LEVER BEING RELATED TO SAID PREDETERMINED PATTERNS OF SAID LEVER ACTUATABLE MEANS OF SAID MEMBERS, SAID LEVER HAVING ACTUATING MEANS FOR ALWAYS ADVANCING SAID FIRST MEMBER ONE INCREMENT OF MOVEMENT THEREOF BY ACTUATING SAID LEVER ACTUATABLE
References Cited (Backward Citations)
US2871577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |