SEAT BACKREST FRAME FOR TRANSPORT FACILITY Russian patent published in 2013 - IPC B60N2/42 B60N2/64 A47C7/46 

FIELD: transport.

SUBSTANCE: invention relates to carrier seat backrest frame. Said frame comprises two sidebars arranged at both seat sides, support plate, backrest plate, top and bottom joints. Support plate both end sections are connected with bottom section of every said sidebar. Backrest plate is mounted behind support plate to interconnect rear sections of said sidebars. Top joint connects support plate top section with backrest plate top section. Bottom joint connects support plate bottom section with backrest plate bottom section. Support plate is arranged in height over section between first height corresponding to passenger lumbar spine upper section and second height corresponding to lumbar spine lower section and is curved so that it has bulged section in vertical direction cross-section extending forward at interval between first and second heights.

EFFECT: cushioned rear shock force in collision.

8 cl, 22 dwg