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US 2015/0308171 A1Published application
Folding chair with hinge
AssigneeShape Field Office LLC
InventorKarson Shadley
Life of this patent
Estimating the term…
Abstract
A folding chair has a backrest, a seat and legs that are coupled to two hinges. The folding chair has an open position and a closed position. In the closed position the backrest portion is parallel to the seat portion and in the open position the angle between the seat portion and the backrest portion is greater than 90 degrees. The hinges are made of two elongated rod structures each having a helical center section. The two elongated rod structures are coupled together with a bolt to form the hinge.
Claims20
A hinge for a folding chair comprising:
- a first hinge structure having a first hole;
- a second hinge structure having a second hole, the second hinge structure is identical to the first hinge structure;
- and
- a bolt placed through the first hole and the second hole for securing the first hinge structure to the second hinge structure.
1 more element
A hinge for a folding chair comprising:
- a first hinge structure having first straight end sections and a first center section having a first helical shape and a first hole;
- a second hinge structure having second straight end sections and a second center section having a second helical shape and a second hole;
- and
- a bolt placed through the first hole and the second hole for securing the first hinge structure to the second hinge structure.
1 more element
A folding chair comprising:
- a seat portion;
- a backrest portion;
- a first leg portion;
- a second leg portion;
- a first hinge structure having first straight end sections and a first center section having a first helical shape and a first hole;
- a second hinge structure having second straight end sections and a second center section having a second helical shape and a second hole;
- and
- a bolt placed through the first hole and the second hole for securing the first hinge structure to the second hinge structure;
- wherein the backrest portion is coupled to the first straight end section of the first hinge structure and the seat portion is coupled to the second straight end section of the second hinge structure.
6 more elements
Dependencies are inferred from the claim text.