Abstract: Some embodiments are directed to a structural element having a planar portion and at least one integral, formed edge portion. The structural element includes at least one elongated member and a formed 3-layered cardboard panel. The formed 3-layered cardboard panel includes a first and second external high density cardboard (HDC) sheet sandwiching a low density cardboard (LDC) layer between them, at least one edge-forming segment absent the second HDC sheet and the LDC layer, and planar segments flanking the edge-forming segments. An inner face of the first HDC sheet of the of the edge-forming segment is folded over and tightly associated to an external surface of the elongated member such as to envelope a top portion thereof to thereby define the formed edge portion. The planar segments is fixed to one another to define the planar portion.

Abstract: The present disclosure relates to a reinforced pivot pin receptacle, specifically made of plastic or other non-metal material and a method for adhering planar element to a cardboard surface, specifically wherein the planar element is made of plastic.

Abstract: The present disclosure concerns tires and a rim brake system for a wheel fitted with such tires..

Abstract: Assemblies comprising first and second assembly members attached to one another via a connection arrangement and methods for forming such assemblies.

Abstract: Assemblies comprising first and second assembly members attached to one another via a connection arrangement and methods for forming such assemblies.

Abstract: Some embodiments are directed to an assembly having a first cardboard assembly member, a second cardboard assembly member and a connection arrangement. The connection arrangement can connect together the first and second cardboard assembly members, and can include a set of first connector elements and a set of second connector elements. Each of the first connector elements can have a first segment fixedly received within the first assembly member, and a second segment that projects from the first assembly member and received within the second assembly member, the second segment extending along a first longitudinal axis parallel to two parallel faces of the second assembly member. Each of the second connector elements can extend along a second longitudinal axis normal to the first longitudinal axis, and be received within the second assembly member and pass through the two parallel faces of the second assembly member.

Abstract: The present disclosure provides a cardboard-based unit, structural elements comprising said unit and land-vehicles comprising said units and structural elements.

Abstract: The present disclosure provides a cardboard-based unit, structural elements comprising said unit and land-vehicles comprising said units and structural elements.

Abstract: The invention provides cardboard-based structures comprising two or more, generally elongated elements angled with respect to one another and being cut out of a multi-layered cardboard-based piece that comprises at least two layers of a single cardboard sheet folded about a longitudinal reinforcing member. The invention further provides frames, preferably human-powered vehicle frames, constructed from structures of the invention, as well as methods for producing structures of the invention.

Abstract: The present disclosure provides a cardboard-based unit, structural elements comprising said unit and land-vehicles comprising said units and structural elements.

Abstract: The present disclosure provides a cardboard-based unit, structural elements comprising said unit and land-vehicles comprising said units and structural elements.

Abstract: The present disclosure provides a cardboard-based unit, structural elements comprising said unit and land-vehicles comprising said units and structural elements.

Abstract: Assemblies comprising first and second assembly members attached to one another via a connection arrangement and methods for forming such assemblies.

Abstract: The invention provides structural elements comprising an elongated internal member and an elongated external member enclosing said internal member, in which a mid-portion enveloping the internal member and being in tight association with the external surface of the internal member, defines, jointly with said internal member, a first, core-envelope sub-structure, while two flanking portions extending from and integral with the mid-portion and facing and contacting one another to jointly define a second, layered sub-structure. The invention further provides methods for manufacturing such structural elements.

Abstract: The invention provides structural elements comprising an elongated internal member and an elongated external member enclosing said internal member, in which a mid-portion enveloping the internal member and being in tight association with the external surface of the internal member, defines, jointly with said internal member, a first, core-envelope sub-structure, while two flanking portions extending from and integral with the mid-portion and facing and contacting one another to jointly define a second, layered sub-structure. The invention further provides methods for manufacturing such structural elements.

Abstract: Some embodiments are directed to a generally planar wheel, including a multi-layer cardboard body having at least one layer of a high-density cardboard sheet sandwiched between at least two layers of low-density cardboard sheet.

Abstract: Some embodiments are directed to assemblies that include a first cardboard assembly member attached to a second cardboard assembly member via a connection arrangement. Some other embodiments are directed to methods for forming these assemblies.

Abstract: The invention provides cardboard-based structures comprising two or more, generally elongated elements angled with respect to one another and being cut out of a multi-layered cardboard-based piece that comprises at least two layers of a single cardboard sheet folded about a longitudinal reinforcing member. The invention further provides frames, preferably human-powered vehicle frames, constructed from structures of the invention, as well as methods for producing structures of the invention.

Abstract: The present disclosure provides a cardboard-based unit, structural elements comprising said unit and land-vehicles comprising said units and structural elements.