Patent ID: 9730522
Date: 2017-08-15
CPC Classifications: A47C

Claim:
1. A headrest tilt mechanism for installation on a chair having a back frame, comprising: a back insert, framing an area of the chair to be independently pivoted; a pair of spaced headrest tilts coupled to the back insert, and pivotally coupled to the back frame of the chair; a lower connector tube coupled to the back frame of the chair below the back insert; a linkage coupler having a top end and a bottom end, wherein the top end is pivotally coupled to an upper member at an upper pivot point and the bottom end is pivotally coupled to an actuator at a lower pivot point; the upper member, having a secured leg secured to the pair of spaced headrest tilts and a pivotal leg pivotally coupled to the linkage coupler; the actuator pivotally coupled to the linkage coupler and the lower connector tube, wherein the actuator can be actuated to pivot the headrest tilts from a closed to an open position; and a stop pin on one of the linkage coupler and the upper member configured for abutment with the other of the linkage coupler and the upper member in each of first and second positions, wherein the first position is generally between the upper pivot point and the lower pivot point and is engaged with the stop pin when the actuator pushes with the linkage coupler and the upper member defining a first acute angle therebetween when the headrest tilts are moved toward the open position, and the second position is on a retaining finger extending perpendicularly from the other of the linkage coupler and the upper member and is engaged by the stop pin when the actuator pulls with the coupler and the upper member defining a second acute angle therebetween larger than the first acute angle to provide a lost motion mechanism when the headrest tilts are blocked from moving toward the closed position.