US4723382A
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US
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Building structures based on polygonal members and icosahedral
Assignee: Individual
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Filing: 1986-08-15
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Granted: 1988-02-09
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Expires: 2006-08-15
Abstract
Abstract Building structures based on polygonal members with coplanar straight edges and icosahedral symmetry. The building structures comprise a set of ten elementary polygonal members, including four triangular members and six parallelogram-shaped members, that are combined to form tetrahedral, octahedral and half-octahedral or trucated tetrahedral, cuboctahedral and truncated octahedral or rhombohedral and parallelpiped building members that in turn fill a three-dimensional space periodically or non-periodically. The orientation of the building members is such that all edges are parallel to the fifteen two-fold axes of rotation of icosahedral symmetry.
Inventors
- 👤 Haresh Lalvani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:08
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/32; E04B1/3211; E04B2001/327; E04B2001/3276; E04B2001/3294; Y; Y10; Y10S; Y10S52/00; Y10S52/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
398 words
A set of polygonal members for constructing a building structure and being combinable to form a set of polyhedral members that, when placed adjacent one another, continuously fill three-dimensional space periodically or non-periodically, the combination comprising: ten elementary polygonal members, which have coplanar straight edges, including where φ is 1.61803, a first triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length x, a second triangular member, which is isosceles, has two base angles of 36° and an apex angle of 108°, and has two edges of a length x and a base of xφ, a third triangular member, which is isosceles, has two base angles of 72° and an apex angle of 36°, and has two edges of a length xφ and a base of x, a fourth triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length xφ, a first parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length x, a second parallelogram-shaped member, which is a rectangle, has four interior angles of 90° each, and has two equal edges of a length x and two other equal edges of a length xφ, a third parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length xφ, a fourth parallelogram-shaped member, which is a rhombus, has two interior angles of 36° and two other interior angles of 144°, and has four equal edges of a length x, a fifth parallelogram-shaped member, which has two interior angles of 60° and two other interior angles of 120°, and has two equal edges of a length x and two other equal edges of a length xφ, and a sixth parallelogram-shaped member, which is a rhombus, has two interior angles of 72° and two other interior angles of 108°, and has four equal edges of a length xφ, said ten elementary polygonal members being combinable to produce six complementary pairs of polyhedral three-dimensional building members, the orientation of said polyhedral building members, when placed adjacent one another, being such that all edges of said building members are parallel to the fifteen two-fold axes of rotation of icosahedral symmetry, said building members being capable of filling three-dimensional space periodically or non-periodically.
Claim 2
Dependent Claim
398 words
A set of polygonal members for constructing a building structure and being combinable to form a set of polyhedral members that, when placed adjacent one another, continuously fill three-dimensional space periodically or non-periodically, the combination comprising: ten elementary polygonal members, which have coplanar straight edges, including where φ is 1.61803, a first triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length x, a second triangular member, which is isosceles, has two base angles of 36° and an apex angle of 108°, and has two edges of a length x and a base of xφ, a third triangular member, which is isosceles, has two base angles of 72° and an apex angle of 36°, and has two edges of a length xφ and a base of x, a fourth triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length xφ, a first parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length x, a second parallelogram-shaped member, which is a rectangle, has four interior angles of 90° each, and has two equal edges of a length x and two other equal edges of a length xφ, a third parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length xφ, a fourth parallelogram-shaped member, which is a rhombus, has two interior angles of 36° and two other interior angles of 144°, and has four equal edges of a length x, a fifth parallelogram-shaped member, which has two interior angles of 60° and two other interior angles of 120°, and has two equal edges of a length x and two other equal edges of a length xφ, and a sixth parallelogram-shaped member, which is a rhombus, has two interior angles of 72° and two other interior angles of 108°, and has four equal edges of a length xφ, said ten elementary polygonal members being combinable to produce six complementary pairs of polyhedral three-dimensional building members, the orientation of said polyhedral building members, when placed adjacent one another, being such that all edges of said building members are parallel to the fifteen two-fold axes of rotation of icosahedral symmetry, said building members being capable of filling three-dimensional space periodically or non-periodically.
Claim 3
Dependent Claim
28 words
A set of polygonal members according to claim 1, wherein said six complementary pairs of polyhedral three-dimensional building members each include a tetrahedral member and an octahedral member.
Claim 4
Dependent Claim
417 words
A set of polygonal members according to claim 2, wherein said six complementary pairs of polyhedral three-dimensional building members comprise a first pair including a first tetrahedron comprised of two of said first triangular members and two of said second triangular members, and a first octahedron comprised of four of said first triangular members and four of said second triangular members, the three mid-planes of said first octahedron having shapes in the form of said second parallelogram-shaped member and two of said fourth parallelogram-shaped members, a second pair including a second tetrahedron comprised of said first triangular member, two of said second triangular members, and said third triangular member, and a second octahedron comprised of two of said first triangular members, four of said second triangular members and two of said third triangular members, the three mid-planes of said second octahedron having shapes in the form of said first parallelogram-shaped member and two of said fourth parallelogram-shaped members, a third pair including a third tetrahedron comprised of said first triangular member and three of said third triangular members, and a third octahedron comprised of two of said first triangular members and six of said third triangular members, the three mid-planes of said third octahedron having shapes in the form of three of said second parallelogram-shaped members, a fourth pair including a fourth tetrahedron comprised of three of said second triangular members and one of said fourth triangular members, and a fourth octahedron comprised of two of said second triangular members and four of said fourth triangular members, the three mid-planes of said fourth octahedron having shapes in the form of three of said second parallelogram-shaped members, a fifth pair including a fifth tetrahedron comprised of said second triangular member, two of said third triangular members, and one of said fourth triangular member, and a fifth octahedron comprised of two of said second triangular members, four of said third triangular members, and two of said fourth triangular members, the three mid-planes of said fifth octahedron having shapes in the form of said third parallelogram-shaped member and two of said fifth parallelogram-shaped members, and a sixth pair including a sixth tetrahedron comprised of two of said third triangular members and two of said fourth triangular members, and a sixth octahedron comprised of four of said third triangular members and four of said fourth triangular members, the three mid-planes of said sixth octahedron having shapes in the form of said second parallelogram-shaped member and two of said sixth parallelogram-shaped members.
Claim 5
Dependent Claim
32 words
A set of polygonal members according to claim 2, wherein said ten elementary polygonal members also combine to produce half-octahedral building members comprising said octahedral members divided in half along their mid-planes.
Claim 6
Dependent Claim
474 words
A set of polygonal members for constructing a building structure and being combinable to form a set of polyhedral members that, when placed adjacent one another continuously, fill three-dimensional space periodically or non-periodically, the combination comprising: ten elementary polygonal members, which have coplanar straight edges, including where φ is 1.61803, a first triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length x, a second triangular member, which is isosceles, has two base angles of 36° and an apex angle of 108°, and has two edges of a length x and a base of xφ, a third triangular member, which is isosccles, has two base angles of 72° and an apex angle of 36°, and has two edges of a length xφ and a base of x, a fourth triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length xφ, a first parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length x, a second parallelogram-shaped member, which is a rectangle, has four interior angles of 90° each, and has two equal edges of a length x and two other equal edges of a length xφ, a third parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length xφ, a fourth parallelogram-shaped member, which is a rhombus, has two interior angles of 36° and two other interior angles of 144°, and has four equal edges of a length x, a fifth parallelogram-shaped member, which has two interior angles of 60° and two other interior angles of 120°, and has two equal edges of a length X and two other equal edges of a length xφ, and a sixth parallelogram-shaped member, which is a rhombus, has two interior angles of 72° and two other interior angles of 108°, and has four equal edges of a length xφ, and four hexagonal members including a first hexagonal member formed of six of said first triangular members, a second hexagonal member formed of six of said second triangular members, a third hexagonal member formed of six of said third triangular members, and a fourth hexagonal member formed of six of said fourth triangular members, said ten elementary polygonal members and said four hexagonal members being combinable to produce six sets of polyhedral three-dimensional building members, said pairs each comprising a truncated tetrahedral member and either a cuboctahedral member or a truncated octahedral member, the orientation of said polyhedral building members, when placed adjacent one another, being such that all edges of said building members are parallel to the fifteen two-fold axes of rotation of icosahedral symmetry, said building members being capable of filling three-dimensional space periodically or non-periodically.
Claim 7
Dependent Claim
474 words
A set of polygonal members for constructing a building structure and being combinable to form a set of polyhedral members that, when placed adjacent one another continuously, fill three-dimensional space periodically or non-periodically, the combination comprising: ten elementary polygonal members, which have coplanar straight edges, including where φ is 1.61803, a first triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length x, a second triangular member, which is isosceles, has two base angles of 36° and an apex angle of 108°, and has two edges of a length x and a base of xφ, a third triangular member, which is isosccles, has two base angles of 72° and an apex angle of 36°, and has two edges of a length xφ and a base of x, a fourth triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length xφ, a first parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length x, a second parallelogram-shaped member, which is a rectangle, has four interior angles of 90° each, and has two equal edges of a length x and two other equal edges of a length xφ, a third parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length xφ, a fourth parallelogram-shaped member, which is a rhombus, has two interior angles of 36° and two other interior angles of 144°, and has four equal edges of a length x, a fifth parallelogram-shaped member, which has two interior angles of 60° and two other interior angles of 120°, and has two equal edges of a length X and two other equal edges of a length xφ, and a sixth parallelogram-shaped member, which is a rhombus, has two interior angles of 72° and two other interior angles of 108°, and has four equal edges of a length xφ, and four hexagonal members including a first hexagonal member formed of six of said first triangular members, a second hexagonal member formed of six of said second triangular members, a third hexagonal member formed of six of said third triangular members, and a fourth hexagonal member formed of six of said fourth triangular members, said ten elementary polygonal members and said four hexagonal members being combinable to produce six sets of polyhedral three-dimensional building members, said pairs each comprising a truncated tetrahedral member and either a cuboctahedral member or a truncated octahedral member, the orientation of said polyhedral building members, when placed adjacent one another, being such that all edges of said building members are parallel to the fifteen two-fold axes of rotation of icosahedral symmetry, said building members being capable of filling three-dimensional space periodically or non-periodically.
Claim 8
Dependent Claim
394 words
A set of polygonal members for constructing a building structure and being combinable to form a set of polyhedral members that, when placed adjacent one another continuously fill three-dimensional space periodically or non-periodically, the combination comprising: ten elementary polygonal members, which have coplanar straight edges, including where φ is 1.61803, a first triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length x, a second triangular member, which is isosceles, has two base angles of 36° and an apex angle of 108°, and has two edges of a length x and a base of xφ, a third triangular member, which is isosceles, has two base angles of 72° and an apex angle of 36°, and has two edges of a length xφ and a base of x, a fourth triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length xφ, a first parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length x, a second parallelogram-shaped member, which is a rectangle, has four interior angles of 90° each, and has two equal edges of a length x and two other equal edges of a length xφ, a third parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length xφ, a fourth parallelogram-shaped member, which is a rhombus, has two interior angles of 36° and two other interior angles of 144°, and has four equal edges of a length x, a fifth parallelogram-shaped member, which has two interior angles of 60° and two other interior angles of 120°, and has two equal edges of a length x and two other equal edges of a length xφ and a sixth parallelogram-shaped member, which is a rhombus, has two interior angles of 72° and two other interior angles of 108°, and has four equal edges of a length xφ, said ten elementary polygonal members being combinable to produce polyhedral three-dimensional building members, the orientation of said polyhedral building members, when placed adjacent one another, being such that all edges of said building members are parallel to the fifteen two-fold axes of rotation of icosahedral symmetry, said building members being capable of filling three-dimensional space periodically or non-periodically.
Claim 9
Dependent Claim
394 words
A set of polygonal members for constructing a building structure and being combinable to form a set of polyhedral members that, when placed adjacent one another continuously fill three-dimensional space periodically or non-periodically, the combination comprising: ten elementary polygonal members, which have coplanar straight edges, including where φ is 1.61803, a first triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length x, a second triangular member, which is isosceles, has two base angles of 36° and an apex angle of 108°, and has two edges of a length x and a base of xφ, a third triangular member, which is isosceles, has two base angles of 72° and an apex angle of 36°, and has two edges of a length xφ and a base of x, a fourth triangular member, which is equilateral, has three interior angles of 60° each, and has three equal edges of a length xφ, a first parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length x, a second parallelogram-shaped member, which is a rectangle, has four interior angles of 90° each, and has two equal edges of a length x and two other equal edges of a length xφ, a third parallelogram-shaped member, which is square, has four interior angles of 90° each, and has four equal edges of a length xφ, a fourth parallelogram-shaped member, which is a rhombus, has two interior angles of 36° and two other interior angles of 144°, and has four equal edges of a length x, a fifth parallelogram-shaped member, which has two interior angles of 60° and two other interior angles of 120°, and has two equal edges of a length x and two other equal edges of a length xφ and a sixth parallelogram-shaped member, which is a rhombus, has two interior angles of 72° and two other interior angles of 108°, and has four equal edges of a length xφ, said ten elementary polygonal members being combinable to produce polyhedral three-dimensional building members, the orientation of said polyhedral building members, when placed adjacent one another, being such that all edges of said building members are parallel to the fifteen two-fold axes of rotation of icosahedral symmetry, said building members being capable of filling three-dimensional space periodically or non-periodically.
Claim 10
Dependent Claim
19 words
A set of polygonal member according to claim 6, wherein said polyhedral three-dimensional building members include rhombohedra and parallelopipeds.
Claim 11
Dependent Claim
23 words
A set of polygonal members according to claim 6, wherein said triangular members form six rhombii that are combined with said parallelogram-shaped members.
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