Patent ID: 6565152
Filing Date: 2003-05-20
Classification: B60N,Y10S

Abstract:
A lightweight seat assembly for a transportation vehicle comprising:a molded unitary seat shell having a shell exterior and a shell interior; said seat shell including a seat section, a back section, and a curved section joining said seat and back sections; a plurality of seats formed on the exterior of said seat shell; an exterior peripheral rib formed around a periphery of said shell exterior; an exterior intermediate rib defined on said shell exterior between adjacent seats, and said exterior intermediate rib being integral with said exterior peripheral rib; interior reinforcing rib structure secured to said shell interior of said seat shell mating with said exterior peripheral and intermediate ribs to form reinforcing rib elements; said interior reinforcing rib structure including interior seat-section rib structure for reinforcing said seat section and interior back-section rib structure for reinforcing said back section; said interior seat-section rib structure including; an interior first seat rib bridging said exterior peripheral rib on a first edge of said seat section, an interior second seat rib bridging said exterior peripheral rib on a second edge of said seat section, and an interior intermediate seat rib bridging said exterior intermediate rib in said seat section of said shell interior; and said interior back-section rib structure including; an interior first back rib bridging said exterior peripheral rib on said first edge of said back section, interior second back rib bridging said exterior peripheral rib on said second edge of said back section, and an interior intermediate back rib bridging said exterior intermediate rib of said seat shell in said back section of said shell interior.