Folding chair and cart

Claim 2

A folding chair and cart structure comprising a substantially vertical rectangular frame having interconnected top, bottom and vertical elements, an inclined U-shaped member having rearwardly extending legs, means pivoting said member to said frame at points spaced from the ends of said legs of said member to points on said vertical frame spaced from the bottom thereof, wheels carried by and inside the ends of said legs, foldable support means pivoted solely to the forward portion of said U-shaped frame member and extending downwardly therefrom, means coupling each leg of the first said U-shaped member to said vertical frame by a longitudinally adjustable diagonally disposed bracket comprising adjustable telescoping portions with one portion removably secured to the vertical frame and the other portion pivotally secured to a leg of said U-shaped member to permit the vertical frame to be adjusted to any one of a plurality of inclined positions, and a sheet of flexible material secured at one end to the upper portion of said vertical frame and at the other end to the forward portion of the first said U-shaped member to form a seat, said structure functioning as a cart when said vertical frame is tilted to the horizontal position with the top of the frame functioning as a handle, said wheels being carried by an axle extending between the legs of the first said U-shaped member, said diagonally disposed brackets each comprising a first cylindrical portion having a plurality of notches therein, a second cylindrical portion having a transverse slot slidably engaging the first cylindrical portion and a rotatable U-shaped spring having a pair of legs and a substantially straight portion extending from the end of one leg of said U-shaped spring toward the other leg and a hook carried at the end of said other leg of said U-shaped spring and engaging said straight portion, said straight portion being disposed in said slot and engaging a selected notch, said spring means being rotatable to disengage and engage selected notches to adjust the length of the associated bracket.

Claim 3

A folding chair and cart structure according to claim 1 wherein said vertical frame elements each including unidirectional hinge means positioned above the U-shaped member and a cooperating sliding collar overlying said hinge means, whereby slidable displacement of said collars permits unidirectional angular displacement of one portion of said vertical frame relative to the other portion to enable the structure to be folded into a compact form upon disengagement of said adjustable brackets.

Claim 4

A folding chair and cart structure comprising a substantially vertical rectangular frame having interconnected top, bottom and vertical elements, an inclined U-shaped member having rearwardly extending legs, means pivoting said member to said frame at points spaced from the ends of said legs of said member to points on said vertical frame spaced from the bottom thereof, wheels carried by and inside the ends of said legs, foldable support means pivoted solely to the forward portion of said U-shaped frame member and extending downwardly therefrom, means coupling each leg of the first said U-shaped member to said vertical frame by a longitudinally adjustable diagonally disposed bracket comprising adjustable telescoping portions with one portion removably secured to the vertical frame and the other portion pivotally secured to a leg of said U-shaped member to permit the vertical frame to be adjusted to any one of a plurality of inclined positions, and a sheet of flexible material secured at one end to the upper portion of said vertical frame and at the other end to the forward portion of the first said U-shaped member to form a seat, said structure functioning as a cart when said vertical frame is tilted to the horizontal position with the top of the frame functioning as a handle, said vertical frame elements each including unidirectional hinge means positioned above the U-shaped member and a cooperating sliding collar overlying said hinge means, whereby slidable displacement of said collars permits unidirectional angular displacement of one portion of said vertical frame relative to the other portion to enable the structure to be folded into a compact form upon disengagement of said adjustable brackets, said wheels being carried by an axle extending between the legs of said first U-shaped member, said adjustable brackets each have one end engaging said axle and the other end removably attached to one of said vertical elements below said hinge means, the first said pivoting means comprising a transverse rod engaging openings in said frame and said member, and said flexible sheet extends downwardly from the upper portion of said vertical frame and in the plane of said frame to a line spaced from said rod and then forwardly to the forward portion of the first said U-shaped member and spring support means engaging and extending upwardly from said rod and engaging said sheet material along said line whereby said sheet material is maintained in a relatively taut configuration.

Claim 5

A folding chair and cart structure comprising a substantially vertical rectangular frame having interconnected top, bottom and vertical elements, an inclined U-shaped member having rearwardly extending legs, means pivoting said member to said frame at points spaced from the ends of said legs of said member to points on said vertical frame spaced from the bottom thereof, wheels carried by and inside the ends of said legs, foldable support means pivoted solely to the forward portion of said U-shaped frame member and extending downwardly therefrom, means coupling each leg of the first said U-shaped member to said vertical frame by a longitudinally adjustable diagonally disposed bracket comprising adjustable telescoping portions with one portion removably secured to the vertical frame and the other portion pivotally secured to a leg of said U-shaped member to permit the vertical frame to be adjusted to any one of a plurality of inclined positions, and a sheet of flexible material secured at one end to the upper portion of said vertical frame and at the other end to the forward portion of the first said U-shaped member to form a seat, said structure functioning as a cart when said vertical frame is tilted to the horizontal position with the top of the frame functioning as a handle, said vertical frame elements each including unidirectional hinge means positioned above the U-shaped member and a cooperating sliding collar overlying said hinge means, whereby slidable displacement of said collars permits unidirectional angular displacement of one portion of said vertical frame relative to the other portion to enable the structure to be folded into a compact form upon disengagement of said adjustable brackets, said wheels being carried by an axle extending between the legs of said first U-shaped member, said adjustable brackets each have one end engaging said axle and the other end removably attached to one of said vertical elements below said hinge means, the first said pivoting means comprising a transverse rod engaging openings in said frame and said member, and said flexible sheet extends downwardly from the upper portion of said vertical frame and in the plane of said frame to a line spaced from said rod and then forwardly to the forward portion of the first said U-shaped member and spring support means engaging and extending upwardly from said rod and engaging said sheet material along said line whereby said sheet material is maintained in a relatively taut configuration.

Claim 6

A folding chair and cart structure according to claim 3 including a track comprising a plurality of transverse slats secured to a pair of longitudinal members of flexible material removably secured about said wheels with the slats extending therebetween and said longitudinal members engaging a side surface of each wheel to maintain the track in alignment therewith.

Claim 7

A folding chair and cart structure according to claim 4 wherein releasable fastening means on the ends of said track maintain it in engagement with said wheels.

Claim 8

A folding chair and cart structure according to claim 5 wherein said fastening means includes hook-like means pivotally secured to one end of each longitudinal member, each of said hook-like means having a reversely formed slot therein and post means on the other end of each longitudinal member for engagement by said hook-like means to retain said track in engagement with said wheels.

Claim 9

A folding chair and cart structure comprising a substantially vertical rectangular frame having interconnected top, bottom and vertical elements, an inclined U-shaped member having rearwardly extending legs, means pivoting said member to said frame at points spaced from the ends of said legs of said member to points on said vertical frame spaced from the bottom thereof, wheels carried by and inside the ends of said legs, foldable support means pivoted solely to the forward portion of said U-shaped frame member and extending downwardly therefrom, means coupling each leg of the first said U-shaped member to said vertical frame by a longitudinally adjustable diagonally disposed bracket comprising adjustable telescoping portions with one portion removably secured to the vertical frame and the other portion pivotally secured to a leg of said U-shaped member to permit the vertical frame to be adjusted to any one of a plurality of inclined positions, and a sheet of flexible material secured at one end to the upper portion of said vertical frame and at the other end to the forward portion of the first said U-shaped member to form a seat, said structure functioning as a cart when said vertical frame is tilted to the horizontal position, with the top of the frame functioning as a handle a track comprising a plurality of transverse slats secured to a pair of longitudinal members of flexible material removably secured about said wheels with the slats extending therebetween and said longitudinal members engaging a side surface of each wheel to maintain the track in alignment therewith.

Claim 10

A folding chair and cart structure comprising a substantially vertical rectangular frame having interconnected top, bottom and vertical elements, an inclined U-shaped member having rearwardly extending legs, means pivoting said member to said frame at points spaced from the ends of said legs of said member to points on said vertical frame spaced from the bottom thereof, wheels carried by and inside the ends of said legs, foldable support means pivoted solely to the forward portion of said U-shaped frame member and extending downwardly therefrom, means coupling each leg of the first said U-shaped member to said vertical frame by a longitudinally adjustable diagonally disposed bracket comprising adjustable telescoping portions with one portion removably secured to the vertical frame and the other portion pivotally secured to a leg of said U-shaped member to permit the vertical frame to be adjusted to any one of a plurality of inclined positions, and a sheet of flexible material secured at one end to the upper portion of said vertical frame and at the other end to the forward portion of the first said U-shaped member to form a seat, said structure functioning as a cart when said vertical frame is tilted to the horizontal position, with the top of the frame functioning as a handle a track comprising a plurality of transverse slats secured to a pair of longitudinal members of flexible material removably secured about said wheels with the slats extending therebetween and said longitudinal members engaging a side surface of each wheel to maintain the track in alignment therewith.

Claim 11

A telescoping structure comprising a first cylindrical portion having a plurality of notches therein, a second cylindrical portion having a transverse slot slidably engaging the first cylindrical portion and a rotatable U-shaped spring having a pair of legs and a substantially straight portion extending from the end of one leg of said U-shaped spring toward the other leg and a hook carried at the end of said other leg of said U-shaped spring and engaging said straight portion, said straight portion being disposed in said slot and engaging a selected notch, said spring means being rotatable to disengage and engage selected notches to adjust the length of the structure.

Claim 12

A telescoping structure comprising a first cylindrical portion having a plurality of notches therein, a second cylindrical portion having a transverse slot slidably engaging the first cylindrical portion and a rotatable U-shaped spring having a pair of legs and a substantially straight portion extending from the end of one leg of said U-shaped spring toward the other leg and a hook carried at the end of said other leg of said U-shaped spring and engaging said straight portion, said straight portion being disposed in said slot and engaging a selected notch, said spring means being rotatable to disengage and engage selected notches to adjust the length of the structure.