VEHICLE SOUND ISOLATING FLOOR Russian patent published in 1998 - IPC

FIELD: railway transport: passenger cars. SUBSTANCE: floor has metal base 1 and upper covering 26 with coating 27 resting on base through carrying members and flexible rubber-and-metal members 4. Each carrying member is made in form of rectangular hollow aluminium section 12 filled with plastics 13. Lower part 15 and upper part 16 of section 12 are separated along side surfaces 14 by layer of plastics. Lower part 15 of section 12 is provided with inclined webs 18 forming dovetail slot 19 accommodating flexible rubber-and-metal member 4 rigidly secured in slot. EFFECT: enhanced noise-, vibration-, and heat insulation of car floor, its reliability and increased service life. 4 cl, 6 dwg