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:
Oct. 07, 2025
Filed:
Oct. 27, 2023
Chang-chen Lin, Tainan, TW;
Chang-Chen Lin, Tainan, TW;
Abstract
A chair comprises a base, a seat, a backrest, an operating unit, and a footrest. A first shaft is pivotably connected to a rear end of the seat. The operating unit includes a transmission member, a spring, and a first motor. An end of the transmission member is connected to the seat. An end of the spring is connected to another end of the transmission member. Another end of the spring is connected to the seat. The first motor has an end connected to the seat. The footrest is pivotably connected to a front end of the seat and incudes a second shaft interlocked with the transmission member. The first motor is operable in a direction to cause pivotal movement of the first shaft and to displace the transmission member to cause pivotal movement of the second shaft while stretching the spring, thereby moving the footrest to an extended position.