Patent US3221464A successfully refreshed from Google Patents.
US3221464A
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Tetrahelical structure
Assignee: Individual
•
Filing: 1961-03-17
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Granted: 1965-12-07
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Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
- 👤 Alvin E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:29
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/19; E04B2001/1924; E04B2001/1927; E04B2001/193; E04B2001/1933; E04B2001/1942; E04B2001/1957; E04B2001/1963; E04B2001/1975; E04B2001/1978; E04B2001/1981; E04B2001/1987; Y; Y10; Y10S; Y10S52/00; Y10S52/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A STRUCTURE OF ELONGATED FORM MADE UP OF STRUTS JOINED TOGETHER AT THEIR ENDS SO THAT ANY SIX ADJACENT STRUTS CONSTITUTE THE EDGES OF A TETRAHEDRON, THERE BEING A SINGLE SUCCESSION OF SUCH TETRAHEDRA IN THE DIRECTION OF THE LENGTH OF THE STRUCTURE, ONE STRUT OF EACH SUCH TETRAHEDRON LYING IN SUBSTANTIAL AXIAL ALIGNMENT WITH A STRUT OF AN ADJACENT TETRAHEDRON AND FORMING A PART OF ONE OF THREE HELICES PASSING AROUND THE SURFACE OF SAID STRUCTURE.
Claim 2
Dependent Claim
77 words
A STRUCTURE OF ELONGATED FORM MADE UP OF STRUTS JOINED TOGETHER AT THEIR ENDS SO THAT ANY SIX ADJACENT STRUTS CONSTITUTE THE EDGES OF A TETRAHEDRON, THERE BEING A SINGLE SUCCESSION OF SUCH TETRAHEDRA IN THE DIRECTION OF THE LENGTH OF THE STRUCTURE, ONE STRUT OF EACH SUCH TETRAHEDRON LYING IN SUBSTANTIAL AXIAL ALIGNMENT WITH A STRUT OF AN ADJACENT TETRAHEDRON AND FORMING A PART OF ONE OF THREE HELICES PASSING AROUND THE SURFACE OF SAID STRUCTURE.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |