CHAIR

• US 20090261644A1
• Filed: 04/16/2009
• Published: 10/22/2009
• Est. Priority Date: 04/18/2008
• Status: Abandoned Application

• Current Assignee: Pro-Cord SpA
• Original Assignee: Pro-Cord SpA
• Inventors: Piretti, Alessandro
• Application Number:
  US12/424,940
• Publication Number:
  US 20090261644A1
• Time in Patent Office: Days
• US Class Current: 297/344.120
• CPC Class Codes: A47C 3/12 with shell-shape seat and back-rest unit, e.g. having arm rests
• CPC Class Codes: A47C 31/023 connecting upholstery to frames, e.g. by hooks, clips, snap fasteners, clamping means or the like
• CPC Class Codes: A47C 7/282 with mesh-like supports, e.g. elastomeric membranes
• CPC Class Codes: A47C 7/44 with elastically-mounted back-rest or backrest-seat unit in the base frame
• CPC Class Codes: A47C 7/445 with bar or leaf springs

Abstract

A chair comprising two ribbed supporting sectional elements (12) set at a distance from one another in a transverse direction and connected to a base (22, 24) by means of a transverse supporting element (20), wherein each of said ribbed supporting sectional elements (12) is basically L-shaped, with a seat portion (12a), a backrest portion (12b), and a rounded radiusing portion (12c) between the seat portion (12a) and the backrest portion (12b), wherein extending between said supporting sectional elements (12) is a material basically in the form of a sheet (42, 62), which forms a seat (42a, 62a) and a backrest (42b, 62b), and wherein each of said ribbed supporting sectional elements (12) is provided with a plurality of through notches (48) set at a distance from one another in a longitudinal direction, which form respective points of localized bending, which enable bending of the supporting sectional element (12) in a vertical plane, said notches (48) distanced from one another by respective stretches (50) substantially rigid to bending in said vertical plane.

Claims

1. A chair comprising:

a base,

two ribbed supporting sectional elements set at a distance from one another in a transverse direction, wherein each of said ribbed supporting sectional elements is basically L-shaped, with a seat portion, a backrest portion, and a rounded radiusing portion between the seat portion and the backrest portion,

a supporting element connecting said ribbed supporting sectional elements to said base,

a sheet extending between said supporting sectional elements forming a seat and a backrest,

wherein, each of said ribbed supporting sectional elements is provided with a plurality of through notches, which are set at a distance from one another in a longitudinal direction and form respective points of localized bending that enable bending of the supporting sectional element in a vertical plane, said notches being distanced from one another by respective stretches substantially rigid to bending in said vertical plane.

2. The chair according to claim 1, wherein each of said notches has two opposite surfaces that come into contact upon one another to limit the amplitude of the local bending of the sectional element.

3. The chair according to claim 1, wherein said notches are formed in an integral ribbing that extends in a median vertical plane of the respective supporting sectional element.

4. The chair according to claim 3, wherein said notches are distributed along said seat portions, said backrest portions and said radiusing portions of said supporting sectional elements.

5. The chair according to claim 3, wherein said ribbing has a thickness comprised between 2-20 mm and a height comprised between 10-60 mm.

6. The chair according to claim 2, wherein each of said notches enables a localized bending of the sectional element with a maximum amplitude comprised between 1°

-22°

.

7. The chair according to claim 1, wherein said sheet consists of a fabric or by a mesh with side edges anchored in respective external grooves of said supporting sectional elements.

8. The chair according to claim 1, wherein said sheet consists of injected plastic material integral with said supporting sectional elements.

9. The chair according to claim 1, wherein said supporting sectional elements are joined together by integral transverse elements formed integrally with said supporting sectional elements.

10. The chair according to claim 1, wherein each of said supporting sectional elements comprises at least one elastic member formed by a bar of elastic metal material inserted in a seat of the supporting sectional element.

11. The chair according to claim 2, wherein said supporting sectional elements with said integral ribbing are made of injection-moulded plastic material.

12. A chair comprising:

a base,

two ribbed supporting sectional elements made of injection-moulded plastic material set at a distance from one another in a transverse direction, wherein each of said ribbed supporting sectional elements is basically L-shaped, with a seat portion, a backrest portion, and a rounded radiusing portion between the seat portion and the backrest portion, wherein each of said ribbed supporting sectional elements is provided with an integral ribbing that extends in a median vertical plane of the respective supporting sectional element, the integral ribbing having a plurality of through notches set at a distance from one another in a longitudinal direction and forming respective points of localized bending, each of said ribbed supporting sectional elements having a respective laterally open external groove,

a supporting element connecting said ribbed supporting sectional elements to said base,

a sheet of flexible material having two side edges anchored in respective external grooves of said supporting sectional elements, said sheet extending between said supporting sectional elements and forming a seat and a backrest, and

first and second bar-shaped flexible transverse elements integrally formed with said supporting sectional elements, said bar-shaped flexible transverse elements connecting to each other said supporting sectional elements at a forward end of the respective seat portions and at an upper end of the respective backrest portions.

13. The chair according to claim 12, wherein said notches are distributed along said seat portions, said backrest portions and said radiusing portions of said supporting sectional elements.

14. The chair according to claim 12, wherein each of said supporting sectional elements comprises at least one elastic member formed by a bar of elastic metal material inserted in a seat of the supporting sectional element.