Chair seat structure

• US 20070170754A1
• Filed: 01/25/2006
• Published: 07/26/2007
• Est. Priority Date: 01/25/2006
• Status: Abandoned Application

• Current Assignee: Russell International Corporation
• Original Assignee: Russell International Corporation
• Inventors: Kang, Ming-Shiang
• Application Number:
  US11/338,768
• Publication Number:
  US 20070170754A1
• Time in Patent Office: Days
• US Class Current: 297/218.100
• CPC Class Codes: A47C 3/18 Chairs or stools with rotatable seat adjustable in height by rotation A47C3/24
• CPC Class Codes: A47C 3/20 Chairs or stools with vertically-adjustable seats tables with variable height A47B9/00
• CPC Class Codes: A47C 5/00 Chairs of special materials
• CPC Class Codes: A47C 7/029 of non-adjustable shape adapted to a user contour or ergonomic seating positions

Abstract

A chair seat includes an upper metallic covering sheet, a lower covering sheet, and a main body; the upper metallic covering sheet is substantially in the shape of a bivalve shell valve, and the main body is held in the upper metallic covering sheet; the upper metallic covering sheet is pressed at a lower circumferential portion thereof to form a compressed step-shaped section, which closely touches and grips the main body; the lower covering sheet is substantially in the shape of a bivalve shell valve, and has a holding portion, and the upper metallic covering sheet is tightly fitted in the holding portion of the lower covering sheet at the compressed step-shaped section such that the main body is wrapped, and such that the upper metallic covering sheet is separable from the lower covering sheet for replacement.

Claims

1. A chair seat structure, comprising;

an upper metallic covering sheet, the upper metallic covering sheet formed as a shell having a concave shaped upper side, and a hollow portion on a bottom side thereof;

a main body disposed in the hollow portion of the upper metallic covering sheet and having a downwardly projecting edge portion circumscribing a perimeter thereof, the upper metallic covering sheet having a circumferential side portion pressed against the perimeter of the main body and having a step-shaped section adjacent a lower edge thereof, the lower edge of the upper metallic covering sheet having an upwardly curled contour encompassing the downwardly projecting edge portion of the main body, whereby the upper metallic covering sheet tightly encompasses the main body to form an integral unit; and

a lower covering sheet joined to the upper metallic covering sheet, the lower covering sheet formed as a shell and having a concave shaped bottom side, the lower covering sheet having a circumferential holding portion securely engaged with the step-shaped section of the upper metallic covering sheet.

3. The chair seat structure as claimed in claim 1, wherein the lower covering sheet is made of metal.

4. The chair seat structure as claimed in claim 1, wherein the lower covering sheet is made of plastic.

5. The chair seat structure as claimed in claim 1, wherein the main body is made of plastic.

2. (canceled)