Construction elements and assembled structures

An assembled structure comprising:

• a plurality of interfitting construction elements, said construction elements including a body having first and second symmetrically arranged body portions of a corresponding shape and having common sides connected end-to-end to form a common side and common base for said body, said first and second body portions being mirror images on opposite sides of a dividing line,
• each of said body portions having three projections with each of said projections having two external surface portions in the planes of two sides of a preselected triangular shape,
• one projection of each of said body portions being cut off at the end and the cut-off projections joined together to provide two adjacent projections that extend in the same direction along spaced parallel planes, a recess between said adjacent projections, and two oppositely arranged projections so that said body has the form of two triangular shaped with overlapping projections, two adjacent sides of the two triangular shaped intersecting above two common sides and two oppositely arranged sides, the length of said two adjacent sides being equal, the length of each oppositely arranged side to the length of an adjacent side of each triangular shape of each of said bodies being of a selected ratio of a number greater than one to one,
• a first and a second of said construction elements being arranged with an adjacent side portions of one of said adjacent projections of said first construction element contacting an adjacent side portion of one of said adjacent projections of said second construction element.

An assembled structure comprising:

• a plurality of construction elements each including a body having first and second symmetrically arranged body portions of a corresponding shape and having common sides connected end-to-end to form a common side and common base for said body, said first and second body portions being mirror images on opposite sides of a dividing line,
• each of said body portions having three projections with each of said projections having two external surface portions in the planes of two sides of a preselected triangular shape,
• one projection of each of said body portions being cut off at the end and the cut-off projections joined together to provide two adjacent projections that extend in the same direction along spaced parallel planes, a recess between said adjacent projections, and two oppositely arranged projections so that said body has the form of two triangular shapes with overlapping projections, two adjacent sides of the two triangular shapes intersecting above two common sides and two oppositely arranged sides, the length of said two adjacent sides being equal, the length of each oppositely arranged side to the length of an adjacent side of each triangular shape of each of said bodies being of a selected ratio of a number greater than one to one,
• a set of four of said construction elements being arranged with the oppositely arranged tapered projections abutting one another to form a square configuration.

An assembled structure comprising:

• a plurality of construction elements each including a body having first and second symmetrically arranged body portions of a corresponding shape and having common sides connected end-to-end to form a common side and common base for said body, said first and second body portions being mirror images on opposite sides of a dividing line,
• each of said body portions having three projections with each of said projections having two external surface portions in the planes of two sides of a preselected triangular shape,
• one projection of each of said body portions being cut off at the end and the cut-off projections joined together to provide two adjacent projections, a recess between said adjacent projections that extends in the same direction along spaced parallel planes, and two oppositely arranged projections so that said body has the form of two triangular shapes with overlapping projections, two adjacent sides of the two triangular shaped intersecting above two common sides and two oppositely arranged sides, the length of said two adjacent sides being equal, the length of each oppositely arranged side to the length of an adjacent side of each triangular shape of each of said bodies being of a selected ratio of a number greater than one-to-one,
• a first and said construction elements and a second of said construction elements interfitted together having one of the adjacent projections of said second construction element inserted into the recess of said first construction element.

A three-dimensional construction element capable of interfitting with a second identical construction element comprising:

• a body having first and second body portions each of a generally triangular shape with each having first, second and third outwardly converging projections,
• each of said projections having two external contacting surface portions arranged in the planes of two sides of a preselected triangular shape,
• each of said body portions being of a corresponding size and having a projection with a cut-off narrower end portions,
• said cut-off narrower end portions being integrally joined together to provide two adjacent projections that extend in the same direction along spaced parallel planes with adjacent sides providing an inwardly converging recess and two oppositely arranged projections that extend out in opposite directions from a central area of said body so that said body has the form of two triangular shapes with overlapping projections, two adjacent sides of the two triangular shapes intersecting above two common sides and two oppositely arranged side, said two common sides being coplanar and forming a common base side for said body,
• said preselected triangular shape having two sides with the length ratio of the square root of two-to-one, two inside angles of substantially 45.degree. and an inside angle of substantially 90.degree., the width of said body being substantially uniform, the width, height and distance along each adjacent side being of substantially the same dimensions, and
• a slot in said central area sized to recieve at least one tapered projection of an identical construction element in a cantilever-type joint.

An assembled structure comprising:

• a plurality of interfitting construction elements, each said construction element including a body having first and second symmetrically arranged body portions of a corresponding shape and having common sides connected. end-to-end to form a common side and common base for said body, said first and second body portions being mirror images on opposite sides of a dividing line,
• each of said body portions having three projections with each of said projections having two external surface portions in the planes of two sides of a preselected triangular shape,
• one projection of each of said body portions being cut off at the end and the cut-off projections joined together to provide two adjacent projections that extend in the same direction along spaced parallel planes, a recess between said adjacent projections, and two oppositely arranged projections so that said body has the form of two triangular shapes with overlapping projections, two adjacent sides of the two triangular shapes intersecting above two common sides and two oppositely arranged sides, the length of said two adjacent sides being equal, the length of each oppositely arranged side to the length of an adjacent side of each triangular shape of each of said bodies being of a selected ratio of a number greater than one to one,
• a first of said construction elements interfitting with a second and a third of said construction elements, said second and third construction elements having one oppositely arranged projection arranged back-to-back and inserted into the recess of said first construction element.