Chair seat tilt adjustment and locking mechanism
First Claim
1. A chair tilt control mechanism for a pedestal base chair comprising a chair control housing mounted on a pedestal chair base and pivotally supporting a chair seat support member, the chair seat support member having a front flange portion provided with a plurality of laterally spaced tabs, a laterally movable front stop member retained within the chair control housing adjacent the front flange portion of the chair seat support member, the laterally movable front stop member having an upper set of laterally spaced bearing surfaces separated by a lower set of laterally spaced bearing surfaces, means to laterally move the front stop member whereby either the upper set or the lower set of laterally spaced bearing surfaces of the movable front stop member are laterally aligned and in contact with the laterally spaced tabs of the front flange portion, and means to lock the laterally spaced tabs of the front flange portion against either the upper set or the lower set of laterally spaced bearing surfaces of the front stop member.
12 Assignments
0 Petitions
Accused Products
Abstract
A chair tilt control mechanism for a pedestal base chair having a chair control housing mounted on the pedestal chair base and pivotally supporting a chair seat support member. A laterally movable front stop member retained within the chair control housing is movable and contacts the front flange of the chair seat support member and limits the pivotal movement of the chair seat support member to predetermined angular positions with respect to the chair control housing and the floor supporting the chair. Also disclosed is a lever member adapted to lock the chair seat support member in one or more predetermined angular positions. Also disclosed is a hollow plastic pivot pin for pivotally connecting a chair control housing to a chair seat support member.
41 Citations
6 Claims
- 1. A chair tilt control mechanism for a pedestal base chair comprising a chair control housing mounted on a pedestal chair base and pivotally supporting a chair seat support member, the chair seat support member having a front flange portion provided with a plurality of laterally spaced tabs, a laterally movable front stop member retained within the chair control housing adjacent the front flange portion of the chair seat support member, the laterally movable front stop member having an upper set of laterally spaced bearing surfaces separated by a lower set of laterally spaced bearing surfaces, means to laterally move the front stop member whereby either the upper set or the lower set of laterally spaced bearing surfaces of the movable front stop member are laterally aligned and in contact with the laterally spaced tabs of the front flange portion, and means to lock the laterally spaced tabs of the front flange portion against either the upper set or the lower set of laterally spaced bearing surfaces of the front stop member.
Specification