Seat latch assembly for a rear row standing seat including a slotted inertial lock plate with resistive support in both design and upright positions

A vehicle latch assembly including a stanchion support and a pivotally secured seat supporting bracket. A batwing shape sector is slaved to rotate with the bracket between the bracket and stanchion support. A sector bottom surface is interrupted by a shoulder projection and an arcuate interior channel is offset from a slaved rotating connection of the sector to the bracket. A pin extends through another channel defined in the stanchion and seats within the sector channel to bias the sector during travel along the interior channel. A pendulum is secured in sandwiching fashion between the bracket and stanchion and includes an upper edge configuration proximate a selected location of the bottom surface of the rotatable sector, depending upon a rotatable position established between the first seat component and a second seat component. The pendulum responds to an inertial impact condition by engaging the shoulder projection to prevent rotation of the first seat component.