Patent US3931697A successfully refreshed from Google Patents.
US3931697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular curved surface space structures
Assignee: SYNESTRUCTICS Inc
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Filing: 1974-05-13
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Granted: 1976-01-13
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Expires: 1994-05-13
Abstract
Abstract A plurality of mathematically interrelated modular structures are disclosed which are based on a series of minimal surfaces bounded by skewed polygons. Some six basic modules are described which are capable of being interconnected in various combinations to form finite volume enclosing structures. Appropriately scaled, the modules could be used as structure toys, to create playground equipment or, for the construction of habitible structures. Utilizing these structural modules, it is possible to construct large assemblies having parallel planar structures within the enclosed space which could be considered floors and ceilings of multilevel structures.
Inventors
- 👤 Peter J. Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:14
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/348; E04B1/34815; A; A63; A63H; A63H33/00; A63H33/04; E04B1/32; E04B2001/0053; E04B2001/3223; E04B2001/327; E04B2001/3276; E04B2001/3288; E04B2001/3294
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
111 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having six edges, one pair of opposing edges and an included edge defining a first plane, a second pair of opposing edges and an included edge defining a second plane; the interior angles of the edges defining said first and second planes being 120°, said first and second planes intersecting at a dihedral angle of 125° 16', the edges at said intersection of planes joining at 90°.
Claim 2
Dependent Claim
111 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having six edges, one pair of opposing edges and an included edge defining a first plane, a second pair of opposing edges and an included edge defining a second plane; the interior angles of the edges defining said first and second planes being 120°, said first and second planes intersecting at a dihedral angle of 125° 16', the edges at said intersection of planes joining at 90°.
Claim 3
Dependent Claim
114 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having eight edges and the interior angles of the vertices each being substantially 120°, one pair of opposing edges defining a base plane, a second pair of opposing edges, together with an included edge, defining a second plane and a third pair of opposing edges, together with an included edge defining a third plane, said second and third planes intersecting said base plane at dihedral angles of substantially 125° 16'.
Claim 4
Dependent Claim
114 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having eight edges and the interior angles of the vertices each being substantially 120°, one pair of opposing edges defining a base plane, a second pair of opposing edges, together with an included edge, defining a second plane and a third pair of opposing edges, together with an included edge defining a third plane, said second and third planes intersecting said base plane at dihedral angles of substantially 125° 16'.
Claim 5
Dependent Claim
115 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having five straight edges, four of the edges intersecting at 90° angles, and the fifth edge joining adjacent edges at 120°, said fifth edge and the two edges adjacent thereto defining a first plane, the remaining two edges defining a second plane, said first and second planes intersecting at a dihedral angle of substantially 125° 16', the edges at said intersection of said first and second planes joining at 90° angles.
Claim 6
Dependent Claim
115 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having five straight edges, four of the edges intersecting at 90° angles, and the fifth edge joining adjacent edges at 120°, said fifth edge and the two edges adjacent thereto defining a first plane, the remaining two edges defining a second plane, said first and second planes intersecting at a dihedral angle of substantially 125° 16', the edges at said intersection of said first and second planes joining at 90° angles.
Claim 7
Dependent Claim
129 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having twelve edges, four pairs of said edges intersecting at four points to define a first, base plane, each adjacent pair of said points also defining the intersection of said first plane with second, third, fourth and fifth planes at dihedral angles of substantially 125° 16', said second, third, fourth and fifth planes each being defined by a pair of opposing edges and an included edge, each included edge joining adjacent coplanar edges at 120° and the edges intersecting at said points joining at 90°.
Claim 8
Dependent Claim
129 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having twelve edges, four pairs of said edges intersecting at four points to define a first, base plane, each adjacent pair of said points also defining the intersection of said first plane with second, third, fourth and fifth planes at dihedral angles of substantially 125° 16', said second, third, fourth and fifth planes each being defined by a pair of opposing edges and an included edge, each included edge joining adjacent coplanar edges at 120° and the edges intersecting at said points joining at 90°.
Claim 9
Dependent Claim
129 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having twelve straight edges, one pair of opposing edges together with an included edge defining a first plane, a second pair of opposing edges together with an included edge defining a second plane, a third pair of opposing edges together with an included edge defining a third plane, the three remaining, non-intersecting edges defining a base palne, said first, second and third planes, intersecting said base plane, the edges of said pairs being respectively connected to said non-intersecting edges at the intersection of said planes.
Claim 10
Dependent Claim
129 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having twelve straight edges, one pair of opposing edges together with an included edge defining a first plane, a second pair of opposing edges together with an included edge defining a second plane, a third pair of opposing edges together with an included edge defining a third plane, the three remaining, non-intersecting edges defining a base palne, said first, second and third planes, intersecting said base plane, the edges of said pairs being respectively connected to said non-intersecting edges at the intersection of said planes.
Claim 11
Dependent Claim
29 words
The module of claim 5, above, wherein the interior angle of the vertices are each substantially 120°, and the dihedral angles of said intersecting planes are substantially 109° 28'.
Claim 12
Dependent Claim
29 words
The module of claim 5, above, wherein the interior angles of the vertices are each substantially 135°, and the dihedral angles of said intersecting planes are substantially 125° 16'.
Claim 13
Dependent Claim
125 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having six edges, a first pair of opposing edges being joined by an included third, coplanar edge at angles of 120° to define a first plane and a second pair of edges being joined by an included sixth coplanar edge at angles of 135° to define a second plane, said first and second planes intersecting at a dihedral angle of substantially 125° 16', said first and second pair of opposing edges being joined at 90° at the intersection of said planes.
Claim 14
Dependent Claim
125 words
A saddle-like polygonal surface module for defining, in conjunction with other, related modules, space enclosing structures, the module comprising: a nonplanar, skew polygonal periphery, having a substantially minimal surface membrane extending to the periphery thereof to define a saddle-like, structural module, said polygonal periphery having six edges, a first pair of opposing edges being joined by an included third, coplanar edge at angles of 120° to define a first plane and a second pair of edges being joined by an included sixth coplanar edge at angles of 135° to define a second plane, said first and second planes intersecting at a dihedral angle of substantially 125° 16', said first and second pair of opposing edges being joined at 90° at the intersection of said planes.
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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |