US3810336A
Expired / Lapsed
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Geodesic pentagon and hexagon structure
Assignee: Fuller and Sadao Inc
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Filing: 1972-05-09
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Granted: 1974-05-14
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Expires: 1992-05-09
Abstract
Abstract A geodesic-type dome structure having the structural elements connected in a pattern of great circle arcs and lesser circle arcs in a three-way grid defining isosceles triangles and including hexagon and pentagon modules.
Inventors
- 👤 S Sadao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:35
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/32; E04B1/3211; E04B2001/3235; E04B2001/3241; E04B2001/3247; E04B2001/327; E04B2001/3288; E04B2001/3294
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
A building framework structure of spherical form of at least three frequency in which the main structural elements are connected in a geodesic-type pattern of great circle arcs and lesser circle arcs intersecting to form three-way grids defining isosceles triangles, the bottom edge of said structure terminating at a lesser circle other than the hemisphere and providing a planar surface edge without other edge structures.
Claim 2
Dependent Claim
65 words
A building framework structure of spherical form of at least three frequency in which the main structural elements are connected in a geodesic-type pattern of great circle arcs and lesser circle arcs intersecting to form three-way grids defining isosceles triangles, the bottom edge of said structure terminating at a lesser circle other than the hemisphere and providing a planar surface edge without other edge structures.
Claim 3
Dependent Claim
15 words
A building framework structure as claimed in claim 1 and including hexagon and pentagon modules.
Claim 4
Dependent Claim
30 words
A building framework as claimed in claim 2 wherein the structural elements are joined by gusset plates perpendicular to the radial from the center of the sphere of the structure.
Claim 5
Dependent Claim
36 words
A building framework as claimed in claim 2 wherein the modules have struts, the ends of said struts being joined by gusset plates perpendicular to the radial from the center of the sphere of the structure.
Claim 6
Dependent Claim
58 words
A building framework as claimed in claim 4 wherein the struts of a module include an external array of struts and an internal array of struts parallel to the external array, there being struts from the external array to the center of the module and struts from an external strut of the outer array to the internal array.
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) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |