Patent US3077041A successfully refreshed from Google Patents.
US3077041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable teaching aid
Assignee: Individual
•
Filing: 1961-02-02
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Granted: 1963-02-12
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Expires: 1981-02-02
Abstract
No abstract record available.
Inventors
- 👤 Larson Raymond George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:43
CPC Classifications
A; A47; A47B; A47B97/00; A47B97/04; A47B19/00; A47B19/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A FOLDABLE TEACHING AID, COMPRISING: A CENTRAL POST; A FLAT MOUNTING DISK STRUCTURE CAPPING AN END OF SAID CENTRAL POST; A BRACE BAR PIVOTALLY CONNECTED WITH THE PERIPHERY OF SAID MOUNTING DISK AND MOVABLE BETWEEN A COAXIAL AND AN ANGULAR POSITION RELATIVE TO SAID POST; RIBS PIVOTALLY CONNECTED WITH SAID POST AND MOVABLE BETWEEN POSITIONS ESSENTIALLY PARALLEL THERETO AND IN COPLANAR RELATION WITH EACH OTHER AND SAID MOUNTING DISK; A SLEEVE SLIDABLY MOUNTED ON SAID POST AND BRACE BAR; STRUTS PIVOTALLY CONNECTED TO SAID SLEEVE AND TO SAID RIBS FOR MOVING SAID RIBS BETWEEN SAID PARALLEL AND COPLANAR POSITIONS; SAID BRACE BAR ADAPTED, WHEN ANGULARLY POSITIONED RELATIVE TO SAID POST, TO RETAIN SAID SLEEVE IN POSITION THEREBY TO CAUSE SAID STRUTS TO SECURE SAID RIBS IN THEIR COPLANAR POSITIONS; MEANS CONNECTING THE EXTREMITIES OF SAID RIBS; AND A COVER JOINED BY ITS MARGINS TO SAID CONNECTING MEANS OVERLYING SAID RIBS AND SAID MOUNTING DISK THEREBY DEFINING AND ESSENTIALLY PLANE SURFACE WHEN SAID RIBS ARE IN THEIR COPLANAR POSITIONS.
Claim 2
Dependent Claim
168 words
A FOLDABLE TEACHING AID, COMPRISING: A CENTRAL POST; A FLAT MOUNTING DISK STRUCTURE CAPPING AN END OF SAID CENTRAL POST; A BRACE BAR PIVOTALLY CONNECTED WITH THE PERIPHERY OF SAID MOUNTING DISK AND MOVABLE BETWEEN A COAXIAL AND AN ANGULAR POSITION RELATIVE TO SAID POST; RIBS PIVOTALLY CONNECTED WITH SAID POST AND MOVABLE BETWEEN POSITIONS ESSENTIALLY PARALLEL THERETO AND IN COPLANAR RELATION WITH EACH OTHER AND SAID MOUNTING DISK; A SLEEVE SLIDABLY MOUNTED ON SAID POST AND BRACE BAR; STRUTS PIVOTALLY CONNECTED TO SAID SLEEVE AND TO SAID RIBS FOR MOVING SAID RIBS BETWEEN SAID PARALLEL AND COPLANAR POSITIONS; SAID BRACE BAR ADAPTED, WHEN ANGULARLY POSITIONED RELATIVE TO SAID POST, TO RETAIN SAID SLEEVE IN POSITION THEREBY TO CAUSE SAID STRUTS TO SECURE SAID RIBS IN THEIR COPLANAR POSITIONS; MEANS CONNECTING THE EXTREMITIES OF SAID RIBS; AND A COVER JOINED BY ITS MARGINS TO SAID CONNECTING MEANS OVERLYING SAID RIBS AND SAID MOUNTING DISK THEREBY DEFINING AND ESSENTIALLY PLANE SURFACE WHEN SAID RIBS ARE IN THEIR COPLANAR POSITIONS.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |