Office Chair Caster Patent
Regarding the patent information of office chair casters, there are currently three main types and their specific situations as follows:
The first is a design patent for 'office chair casters' The patent application number is CN202430755942.5, the application date is November 28, 2024, the authorization announcement number is CN309544473S, the authorization announcement date is October 17, 2025, and the estimated expiration date is November 28, 2039. The applicant (patentee) and the inventor are both Yuan Yan, with the address at Room 1305, Building 1, Jianghua Garden, No. 5 Shenxiang Road, Xiaolan Town, Zhongshan City, Guangdong Province, postal code 528400. The agency is Zhongshan Lanyu Patent and Trademark Agency (General Partnership). The purpose of this patent is clearly for chair casters, and its design focus is on shape, which means that this caster has uniqueness in its appearance and form. It may be designed with a specific shape to meet certain functional requirements during the use of the chair or to achieve an aesthetic effect.
The second is a design patent for 'chair casters (five-claw AF)' The application number is CN202530047707.7, the application date is January 23, 2025, the authorization announcement number is CN309557359S, the authorization announcement date is October 24, 2025, and the estimated expiration date is January 23, 2040. The applicant (patentee) is Hangzhou Heibaidiao Technology Co., Ltd., the inventors are Feng Xiaowei and a person who requests not to be disclosed. The address is Room 109, 1st Floor, Building 1, No. 428 Qiuyi Road, Changhe Street, Binjiang District, Hangzhou City, Zhejiang Province, postal code 310000. This patent is used for chair casters. Although the design focus is not detailed, judging from the name 'five-claw AF', its shape may have the structural characteristics of five claws. This structure may have unique advantages in terms of stability and mobility flexibility.
The third is an invention patent for 'office chair casters (3-star)' The patent number is 03317667, the application date is January 6, 2003, and the authorization announcement date is August 20, 2003. The applicant/patentee is Nanhai Chenying Plastic Hardware Products Co., Ltd., located in Guangdong (44), postal code 528200, and the inventor/designer is Zheng Zhongzun. As an invention patent, it may have more in-depth innovations in the technical solution. Judging from the name '3-star', its structure may have star-shaped characteristics, which may achieve breakthroughs in terms of the load-bearing capacity and rotational performance of the casters.
