公开(公告)号：US09894999B2

公开(公告)日：2018-02-20

申请号：US14766498

申请日：2014-02-07

Applicant: BOCK 1 GMBH & CO.KG

Inventor： Hermann Bock

IPC: A47C7/44 ,  A47C1/032

CPC classification number: A47C7/441 ,  A47C1/03255 ,  A47C1/03266 ,  A47C1/03272 ,  A47C7/443

Abstract: A mechanism for an office chair allows a pivoting resistance of a backrest support to be altered. The mechanism for the office chair, in which a small adjustment travel is sufficient in order to realize a large adjustment range of the pivoting resistance of the backrest, has an actuating element connected to the backrest support with a supporting and/or guide track for a functional element. The functional element brings about a change in the spring tension of a spring element during pivoting of the backrest support.