Chair, in particular office chair

• US 6,896,329 B2
• Filed: 05/13/2002
• Issued: 05/24/2005
• Est. Priority Date: 05/11/2001
• Status: Expired due to Fees

• Current Assignee: Armin Sander
• Original Assignee: Armin Sander
• Inventors: Sander, Armin, Potrykus, Martin
• Primary Examiner(s): GARRETT, ERIKA P
• Assistant Examiner(s): Harris, Stephanie
• Application Number:
  US10/144,222
• Publication Number:
  US 20020167209A1
• Time in Patent Office: 1,107 Days
• Field of Search: 297/300.2, 297/300.3, 297/300.1, 297/316, 297/317, 297/320, 297/321, 297/322
• US Class Current: 297/316
• CPC Class Codes: A47C 1/03255 with a central column, e.g. rocking office chairs
• CPC Class Codes: A47C 1/03294 slidingly movable in the base frame, e.g. by rollers

Abstract

The chair, particularly an office chair, has a backrest articulated to a seat support by way of a rest support. A seat surface is movable synchronously with the backrest. A front region of the seat surface is connected to the seat support via a sliding guide and a rear region is connected to the seat support via a seat link. A distance from an upper pivot point, which connects the seat link to the seat surface, to the backrest is shorter than the distance from a lower pivot point, which connects the seat link to the seat support, to the backrest. The movements of the backrest and of the seat surface are synchronized by a sliding guide provided between the seat link and the rest support.

Claims

1. A chair, comprising:

a seat support;

a backrest and a rest support articulatedly mounting said backrest to said seat support;

a seat surface disposed to move synchronously with said backrest, said seat surface having a front region and a rear region;

a first sliding guide connecting said front region to said seat support;

a seat link connecting said rear region at an upper pivot point and said seat support at a lower pivot point;

wherein a distance from said upper pivot point to said backrest is shorter than a distance from said lower pivot point to said backrest; and

a second sliding guide having an oblong slot and a carrier bolt between said seat link and said rest support for synchronizing a movement of said backrest and a movement of said seat surface.

2. The chair according to claim 1, wherein said rest support has said oblong slot formed therein and said carrier bolt carried on said seat link is guided in said slot for synchronizing the movements of said backrest and said seat surface.

3. The chair according to claim 1, wherein said seat link has said oblong slot formed therein and said carrier bolt carried on said rest support is guided in said slot for synchronizing the movements of said backrest and said seat surface.

4. The chair according to claim 1, wherein said first sliding guide extends obliquely downward from said front region of said seat surface toward said seat support.

5. The chair according to claim 1, wherein, when said backrest is in the position wherein it is inclined back toward the rear, said upper pivot point that connects said seat link to said seat surface is at a lower level, relative to said seat surface, than a further pivot point at which said rest support is connected to said seat support.