Patent US1966049A successfully refreshed from Google Patents.
Patent US3144881A successfully refreshed from Google Patents.
US3144881A
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Construction element
Assignee: Joy Manufacturing Co
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Filing: 1961-08-18
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Granted: 1964-08-18
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Expires: 1981-08-18
Abstract
No abstract record available.
Inventors
- 👤 Wayne T Sproull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:48
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/40; B03C3/45; B03C3/49; F; F16; F16L; F16L9/00; F16L9/003; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A STRUCTURE PROVIDING A BANK OF NESTED DUCTS COMPRISING A PLURALITY OF GEOMETRICALLY CONGRUENT CONSTRUCTION ELEMENTS, EACH OF SAID ELEMENTS HAVING AT LEAST TWO ANGULARLY DISPOSED PORTIONS FORMING CONTIGUOUS SIDES OF A DUCT, EACH TWO PORTIONS HAVING A COMMON EDGE AND AT LEAST ONE FREE EDGE, SAID TWO PORTIONS FORMING A DIHEDRAL ANGLE HAVING SAID COMMON EDGE AS THE VERTEX OF SAID DIHEDRAL ANGLE, AND MEANS LOCATED ALONG SAID VERTEX EXTERIOR TO SAID DIHEDRAL ANGLE ENGAGING A FREE EDGE OF AT LEAST ONE OTHER OF SAID CONSTRUCTION ELEMENTS FORMING SAID BANK OF NESTED DUCTS TO LOCATE ADJACENT ELEMENTS IN RESPECT TO EACH OTHER.
Claim 2
Dependent Claim
103 words
A STRUCTURE PROVIDING A BANK OF NESTED DUCTS COMPRISING A PLURALITY OF GEOMETRICALLY CONGRUENT CONSTRUCTION ELEMENTS, EACH OF SAID ELEMENTS HAVING AT LEAST TWO ANGULARLY DISPOSED PORTIONS FORMING CONTIGUOUS SIDES OF A DUCT, EACH TWO PORTIONS HAVING A COMMON EDGE AND AT LEAST ONE FREE EDGE, SAID TWO PORTIONS FORMING A DIHEDRAL ANGLE HAVING SAID COMMON EDGE AS THE VERTEX OF SAID DIHEDRAL ANGLE, AND MEANS LOCATED ALONG SAID VERTEX EXTERIOR TO SAID DIHEDRAL ANGLE ENGAGING A FREE EDGE OF AT LEAST ONE OTHER OF SAID CONSTRUCTION ELEMENTS FORMING SAID BANK OF NESTED DUCTS TO LOCATE ADJACENT ELEMENTS IN RESPECT TO EACH OTHER.
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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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |