An add-on seat assembly is provided for temporary attachment to the rear of a vehicle. Such seat assembly includes a hitch bar, one end of which has, intimately associated therewith, a structure and arrangement for releasable attachment to a trailer hitch which is intimately associated with the rear
An add-on seat assembly is provided for temporary attachment to the rear of a vehicle. Such seat assembly includes a hitch bar, one end of which has, intimately associated therewith, a structure and arrangement for releasable attachment to a trailer hitch which is intimately associated with the rear of a vehicle. The hitch bar includes a securement structure extending across the opposed other end thereof. The seat assembly includes a pair of arms that are demountably and rotatably attached to a respective one opposed end of the securement structure. The seat assembly also includes a pair of seat units, each including a seat bottom that is foldably secured to a seat back, the bottom of the seat bottom including a structure for demountably and rotatably attaching the seat unit to a respective one of the pair of arms.
대표청구항▼
1. An add-on seat assembly for temporary attachment to the rear of a vehicle, the assembly comprising: a hitch bar, a first end of which has, intimately associated therewith, a structure and arrangement for releasable attachment to a trailer hitch intimately associated with the rear of a vehicle, sa
1. An add-on seat assembly for temporary attachment to the rear of a vehicle, the assembly comprising: a hitch bar, a first end of which has, intimately associated therewith, a structure and arrangement for releasable attachment to a trailer hitch intimately associated with the rear of a vehicle, said hitch bar including a securement structure extending across a second and opposed end thereof, wherein: a hitch longitudinal direction extends between the first and second ends of the hitch bar, andthe securement structure extends along a securement longitudinal direction;a pair of arms demountably and rotatably attached to a respective one opposed end of the securement structure, wherein each arm is a linear element that extends along an arm longitudinal direction that is within a plane defined by the hitch longitudinal direction and the securement longitudinal direction and each arm is rotatable within the plane;a seat unit including a seat bottom that is foldably secured to a seat back, the bottom of the seat bottom including a seat structure for demountably and rotatably attaching the seat unit to a respective one of the pair of arms; anda second unit including a structure for demountably and rotatably attaching the second unit to a respective one of the pair of arms. 2. The seat assembly as claimed in claim 1 wherein the hitch structure and arrangement couples the hitch bar to the trailer hitch secured to the rear of a vehicle. 3. The seat assembly as claimed in claim 1 wherein the hitch structure and arrangement comprises apertures in the hitch bar and apertures in the trailer hitch for insertion of a pin into mating apertures in the hitch bar and apertures in the trailer hitch. 4. The seat assembly as claimed in claim 1 wherein the seat structure comprises a cylindrical connector descending along a direction perpendicular to the plane from the bottom of the seat bottom for insertion into a central aperture of a cylindrical knob at the free end of the associated one of the pair of arms, thereby to provide a demountable rotatable attachment. 5. The seat assembly as claimed in claim 1, wherein the edge of the seat bottom that is foldably secured to the seat back includes a tab that extends upwardly in the direction of the seat back bottom for holding the seat unit in its erected position when the seat unit is not folded. 6. The seat assembly as claimed in claim 1 wherein the seat assembly is formed of a synthetic plastic material. 7. The seat assembly as claimed in claim 6 wherein the synthetic plastic material is polyethylene, polypropylene, or poly vinyl chloride. 8. The seat assembly as claimed in claim 1, wherein the seat assembly is formed of a steel. 9. The seat assembly as claimed in claim 1, wherein the seat assembly is formed of rigid circular tubing, oval tubing, channel or angle shapes. 10. The seat assembly as claimed in claim 1 wherein the securement longitudinal direction is perpendicular to the hitch longitudinal direction. 11. The seat assembly as claimed in claim 1 wherein: each arm is demountably and rotatably attached by an arm attach structure to the respective one opposed end of the securement structure; andthe arm attachment structure comprises a cylindrical knob at a securement end of the arm, the cylindrical knob including a central aperture, and wherein the securement structure extending across the hitch bar includes a cooperating aperture, whereby a pin may be inserted into the cooperating apertures thereby to provide a demountable and rotatable attachment. 12. The seat assembly as claimed in claim 1 wherein a frame unit is formed from the combination of the pair of arms and the hitch bar, and the frame unit can be configured with the hitch bar in parallel with and between the two arms of the pair. 13. The seat assembly as claimed in claim 1 wherein the second unit is a seat unit including a seat bottom that is foldably secured to a seat back, the bottom of the seat bottom including the structure for demountably and rotatably attaching the seat unit to the respective one of the pair of arms. 14. The seat assembly as claimed in claim 1 wherein a frame unit is formed from the combination of the pair of arms and the hitch bar, and the frame unit can be configured with the hitch bar in parallel with and between the two arms of the pair. 15. The seat assembly as claimed in claim 1 wherein: the seat unit includes a tab that is attached to the seat unit so that the seat back is held in an erected position when the seat back is not folded. 16. The seat assembly as claimed in claim 15 wherein the tab is positioned at the edge of the seat bottom and extends in the direction of the seat back when the seat back is not folded.
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