Patent ID: 8794701
Filing Date: 2014-08-05
Classification: A47C

Abstract:
1. A backrest for a chair, comprising: a bag-like upholstery material, with which a back frame is upholstered by fitting the bag-like upholstery material onto the back frame that has a pair of right and left side frames extending in an up-down direction; and a low-friction material disposed between the right side frame and an inner part of the upholstery material contacting the right side frame and between the left side frame and an inner part of the upholstery material contacting the left side frame, wherein sliding friction between the right side frame and the upholstery material and between the left side frame and the upholstery material with the low-friction material is lower than sliding friction between the right side frame and the upholstery material and between the left side frame and the upholstery material without the low-friction material.