Patent · US Active

Twistable chair backrest frame

US11051624B1 · kind B1 · utility

1Cited by

29References

11Claims

0Family size

Assignee

Comfordy Co., Ltd. · TW

Inventors

Yu-Ling Wu · Tainan, TW
Armin Sander · Ergolding, DE
Cyrille Jehan Charier · Nuremberg, DE

Key dates

Filing date	Feb 27, 2020
Grant date	Jul 6, 2021
Priority date	—
Expiry date	Feb 27, 2040

Classification

Technology area (CPC A)Human Necessities
CPC primaryA47C7/40
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

A twistable chair backrest frame is disclosed herein. It has a hollow section and two opposite elastic supporting ribs at a right side and a left side of the hollow section.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.