Patent ID: 7513574

Claim:
A light alloy seat back frame for a vehicle seat, comprising: a pair of spaced apart side sections; an upper section interconnecting said spaced apart side sections; a lower section formed into a substantially plate-shape having a width; said lower section extending between lower regions of rear sides of said spaced apart side sections and interconnecting said spaced apart side sections; said upper, side and lower sections being integrally made of light alloy; and a belt-shaped metal plate applied along a longitudinal direction of said lower section and fixed onto a surface of said lower section; said belt-shaped metal plate being formed with at least two horizontally extending holes and fixed onto said surface of said lower section by fastening said belt-shaped metal elate onto said surface of said lower section by means of bolts that are penetrated through said lower section from substantially central portions of said at least two horizontally extending holes, and nuts.