The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2013
Filed:
Feb. 01, 2011
Ching-ming Chen, Taoyuan County, TW;
Ching-Ming Chen, Taoyuan County, TW;
Other;
Abstract
A device for adjusting the height of the backrest of an office chair having a backrest unit at the rear side of a seat body. The height adjustment may take place to achieve the optimal resting angle according to the different body shapes, personal requirements and needs of the users. In moving upward to adjust the height, an automatic engagement is achieved in the predetermined position. Moreover, an automatic return to the lowest position is achieved as well in reaching the highest position. It is done without any tools or control buttons and fulfills the requirements on the user-friendly operation and a practical use. In addition, a waistrest is located at the position of the waist of the user for providing an optimal resting comfort by means of the pivoted and telescopic structure.