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:
Jun. 30, 2026
Filed:
Oct. 20, 2023
Haworth, Inc., Holland, MI (US);
Peter J. Beyer, Hamilton, MI (US);
Kyle R. Fleet, Zeeland, MI (US);
Teresa A. Bellingar, Holland, MI (US);
Mark J. Sherman, Zeeland, MI (US);
John A. Colasanti, Hudsonville, MI (US);
Haworth, Inc., Holland, MI (US);
Abstract
An office-type chair includes a weight responsive mechanism having a front link pivotally connected between the base and the seat, a rear link pivotally connected between the seat and the backrest, and a resilient element, wherein the force of a user occupying the seat pivots the front link and the rear link against a resistance created by the resilient element an amount proportional to the weight of the user to increase the effective length of the moment arm between the user and the recline axis, such that the force to pivot the backrest about the recline axis varies as a function of the weight of the user. In one embodiment, a secondary recline spring between the base and the backrest, the secondary spring contributing to the biasing force of the recline tension spring when the backrest is moved to the reclined position.