Patent ID: 8297702

Claim:
A seat angle adjustment assembly for use with a chair tilt mechanism, the tilt mechanism including a housing, a back attachment assembly coupled to the housing, and a seat plate adapted to be coupled to a chair seat and pivotably coupled at a front end to the housing, the seat angle adjustment assembly comprising: a rod rotatably coupled to the back attachment assembly; a first cam housing coupled to the seat plate on a first side of the back attachment assembly and a second cam hosing coupled to the seat plate on a second side of the back attachment assembly, the first cam housing defining a first cam cavity and the second cam housing defining a second cam cavity; a first cam located within the first cam cavity and a second cam located within the second cam cavity, the first cam and the second cam each defining at least two positions, wherein the rod is coupled to the first cam and the second cam and rotates together with the first cam and the second cam; and wherein a portion of the first cam is received in a slot in a first sidewall of the back attachment assembly and a portion of the second cam is received in a slot in a second sidewall of the back attachment assembly; and a lever coupled to the rod such that rotation of the lever rotates the rod and the first cam and the second cam, wherein rotation of the lever rotates the first cam within the first cavity to move the first cam between the at least two positions and rotates the second cam within the second cavity to move the second cam between the at least two positions, thus moving the cam housings and rear of the seat plate between two positions.