초록 ▼

A mobile chair (10) includes a seat (11), and a tray (12) having a front edge (17) that is shorter than its rear edge (18). A caster assembly (14) is carried by the tray (12) at the front and rear corners of the tray (12). A brace assembly (13) attaches the seat (11) to the tray (12) and includes a

A mobile chair (10) includes a seat (11), and a tray (12) having a front edge (17) that is shorter than its rear edge (18). A caster assembly (14) is carried by the tray (12) at the front and rear corners of the tray (12). A brace assembly (13) attaches the seat (11) to the tray (12) and includes a tube portion (27) attached to the tray (12) between the caster assemblies (14) at the front corners of the tray (12) and tube portions (34) attached to the tray (12) near the rear corners.

대표청구항 ▼

1. A mobile chair comprising a seat, a tray, a brace assembly attaching said seat to said tray, and caster assemblies carried by said tray, said tray having a rear edge and a front edge, said front edge being shorter than said rear edge, said brace assembly including a front brace having a generally

1. A mobile chair comprising a seat, a tray, a brace assembly attaching said seat to said tray, and caster assemblies carried by said tray, said tray having a rear edge and a front edge, said front edge being shorter than said rear edge, said brace assembly including a front brace having a generally centrally located horizontal tube attached to said seat and a generally vertical tube attached generally centrally to said front edge of said tray. 2. The chair of claim 1 wherein said tray has opposed side edges converging from said rear edge to said front edge. 3. The chair of claim 1 wherein said tray is in the shape of a trapezoid. 4. The chair of claim 1, said tray including a flat surface having said rear edge and said front edge and having side edges between said front and rear edges, and a flange extending upwardly from all said edges. 5. The chair of claim 1 wherein said tray has front corners and one of said caster assemblies is attached to said tray near each said front corner, said vertical tube being attached to said tray between said caster assemblies attached at said front corners. 6. A mobile chair comprising a seat, a tray, a brace assembly attaching said seat to said tray, and caster assemblies carried by said tray, said tray having a rear edge and a front edge, said front edge being shorter than said rear edge, wherein said brace assembly includes a rear brace having a generally horizontal tube attached to said seat, a mounting plate attached to said tube of said rear brace, and a front brace having a generally horizontal tube attached to said seat, said horizontal tube of said front brace having a mounting plate attached thereto, said mounting plates being attached to each other to form said brace assembly. 7. The chair of claim 1 wherein said brace assembly includes a rear brace having a generally horizontal tube attached to said seat and a straight tube extending from each end of said horizontal tube, said straight tubes being attached to said tray. 8. The chair of claim 7 wherein said tray has rear corners and one of said caster assemblies is attached to said tray near each said rear corner, said straight tubes being attached to said tray directly above said rear corners. 9. The chair of claim 8 wherein said straight tubes extend angularly from a position under said seat to said rear corners of said tray. 10. A mobile chair comprising a seat; a tray having front corners and rear corners; a brace assembly attaching said seat to said tray; and a caster assembly carried by said tray near each said front corner and near each said rear corner; said brace assembly including a generally centrally located first portion attached to a front edge of said tray between said caster assemblies, a second portion attached to said tray near one of said rear corners, and a third portion attached to said tray near the other of said rear corners. 11. The chair of claim 10 said brace assembly further including a fourth generally horizontal portion connected to said first portion, said fourth portion being attached to said seat. 12. The chair of claim 11 said brace assembly including a fifth generally horizontal portion extending between said second and third portions, said fifth portion being attached to said seat. 13. The chair of claim 12 said brace assembly including a mounting plate on said fourth portion and a mounting plate on said fifth portion, said mounting plates being connected to attach said fourth portion to said fifth portion. 14. The chair of claim 10 wherein said second and third portions extend angularly from under said seat to said rear corners. 15. The chair of claim 10 said tray having a front edge extending between said front corners and a rear edge extending between said rear corners, said front edge being shorter than said rear edge. 16. The chair of claim 15 wherein said tray has opposed side edges converging from said rear edge to said front edge. 17. The chair of claim 15 wherein said tray is in the shape of a trapezoid. 18. The chair of claim 15, said tray including a flat surface having said rear edge and said front edge and having side edges between said front and rear edges, and a flange extending upwardly from all said edges. 19. A mobile chair comprising a seat, a tray having a front edge and a rear edge and front corners and rear corners, said front edge being shorter than said rear edge; a brace assembly attaching said seat to said tray; and a caster assembly carried by said tray near each said front corner and near each said rear corner; said brace assembly including a generally centrally located first portion attached to said tray between said caster assemblies at said front edge of said tray, a second portion attached to said tray near one of said rear corners, and a third portion attached to said tray near the other of said rear corners.