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US 6,578,593 B2Granted
Hinged folding framework
OwnerTerry Leonarzinventor
Life of this patent
Estimating the term…
Abstract
A folding square framework which may serve as a support for a tensile canvas or membrane. This framework, which may be mounted on a fixed column or wall, may fold, around hinges set at 54.3° to the longitudinal axes of each member of the framework, at each corner, compactly together such that all four sides of the framework are rested parallel with one another, perpendicular to the plane of the unfolded structure.
Claims5
A hinge half comprising
- Frame post means, said frame post means defining a longitudinal axis, and
- Said frame post means having a width w, and
- Hinge bearing means rigidly connected to said frame post means, said hinge bearing means defining a longitudinal axis, and
- Said frame post, means axis and said hinge bearing means axis being disposed at an angle of substantially 54.3° to one another when viewed along an axis which is orthogonal to offset parallel planes containing respectively said frame post means axis and said hinge bearing means axis, said offset parallel planes being offset from one another by a distance of at least half of said width w.
1 more element
Folding frame comprising:
- Four members, each of said members having two half hinges disposed thereon, said two half hinges being separated, longitudinally on said member, by a distance d, said distance d being the same on each of said four members,
- Each said member having a width w,
- Said half hinges having hinging axes disposed respectively at an angle of substantially 54.3° from the longitudinal axes of the member to which they are attached, said angle of substantially 54.3° being measured when viewed along a line orthogonal to parallel planes containing respectively said longitudinal axis of said half hinge hinging axis and said longitudinal axis of said member, said parallel planes being offset from one another by a distance of at lease half of said width w, and
- said half hinges on each of said members being disposed orthogonally to one another when viewed along the longitudinal axes of said members, and
- A first half hinge on a first member being hinged to a first half hinge on a second member,
- A second half hinge on said second member being hinged to a first half hinge on a third member,
- A second half hinge on said third member being hinged to a first half hinge on a fourth member, and
- A second half hinge on said fourth member being hinged to a second half hinge on said first member.
5 more elements
Dependencies are inferred from the claim text.