US3314846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible hollow core
Assignee: Individual
•
Filing: 1961-07-11
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Granted: 1967-04-18
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Expires: 1981-07-11
Abstract
No abstract record available.
Inventors
- 👤 Niwa Takato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:08
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/40; E04C2/34; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/24; Y10T428/24025; Y10T428/24149; Y10T428/24174; Y10T428/24182; Y10T428/24752
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN EXPANSIBLE HOLLOW CORE COMPMRISING IN COMBINATION: (A) AT LEAST THREE SPACEDLY SUPERPOSED DIAPHRAGM MEMBERS, EACH OF SAID MEMBERS HAVING TWO OPPOSITE FACE PORTIONS AT LEAST ONE FACE PORTION OF EACH MEMBER BEING OPPOSITE A FACE PORTION OF AN ADJACENT DIAPHRAGM MEMBER, OPPOSITE FACE PORTIONS CONSTITUING A PAIR OF FACE PORTIONS; (B) A PLURALITY OF CONNECTING SHEET MEMBERS INTERPOSED BETWEEN EACH OF SAID PAIRS, EACH CONNECTING SHEET MEMBER INCLUDING A PLATE MEMBER HAVING TWO OPPOSITE FACES, TWO JUNCTION MEMBERS ATTACHED TO A RESPECTIVE ONE OF THE PLATE MEMBER FACES, AND TWO FLANGE PORTIONS INTEGRALLY CONNECTED TO RESPECTIVE ONES OF THE JUNCTION MEMBERS, SIAD FLANGE PORTIONS BEING HINGEDLY MOVABLE RELATIVE TO SAID PLATE MEMBER ABOUT RESPECTIVE AXES EXTENDING IN A COMMON DIRECTION, EACH FLANGE PORTION HAVING A MOUNTING FACE EXTENDING AWAY FROM THE CORRESPONDING AXIS; AND
Claim 2
Dependent Claim
135 words
AN EXPANSIBLE HOLLOW CORE COMPMRISING IN COMBINATION: (A) AT LEAST THREE SPACEDLY SUPERPOSED DIAPHRAGM MEMBERS, EACH OF SAID MEMBERS HAVING TWO OPPOSITE FACE PORTIONS AT LEAST ONE FACE PORTION OF EACH MEMBER BEING OPPOSITE A FACE PORTION OF AN ADJACENT DIAPHRAGM MEMBER, OPPOSITE FACE PORTIONS CONSTITUING A PAIR OF FACE PORTIONS; (B) A PLURALITY OF CONNECTING SHEET MEMBERS INTERPOSED BETWEEN EACH OF SAID PAIRS, EACH CONNECTING SHEET MEMBER INCLUDING A PLATE MEMBER HAVING TWO OPPOSITE FACES, TWO JUNCTION MEMBERS ATTACHED TO A RESPECTIVE ONE OF THE PLATE MEMBER FACES, AND TWO FLANGE PORTIONS INTEGRALLY CONNECTED TO RESPECTIVE ONES OF THE JUNCTION MEMBERS, SIAD FLANGE PORTIONS BEING HINGEDLY MOVABLE RELATIVE TO SAID PLATE MEMBER ABOUT RESPECTIVE AXES EXTENDING IN A COMMON DIRECTION, EACH FLANGE PORTION HAVING A MOUNTING FACE EXTENDING AWAY FROM THE CORRESPONDING AXIS; AND
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |