Present technology used in school bus seats is quite old. Essentially, school bus seats are presently made using metal or metal and wood. Wood or metal is secured to the metal seat back frame and metal frame bottom. A covering which mayinclude some type of foam is also used. The covering and foam are subject to wear and tear as well as vandalism.
school bus seats as claimed in claim 1 wherein a component of said school bus seat back is made by the following steps: coating a mold with a spray elastomer; inserting said component into said mold; and, injecting urethane foam into saidmold, said urethane adhering to said component and said elastomer.
A school bus seats as claimed in claim 1 wherein said seat back includes a superstructure; said seat back is made by the following steps: coating a mold with a spray elastomer; attaching the superstructure of said seat back to the seat backbrackets; inserting the seat back into the mold; and, injecting urethane foam into the mold, said urethane adhering to said superstructure of said seat back, said elastomer, and said brackets.
A school bus seats, comprising: a seat back, support legs, a seat bottom and a one-piece integral envelope cushion completely residing over said seat back, said envelope cushion includes an integrally molded polyurethane foam having anelastomeric skin formed on the exterior thereof; said seat back is a sandwich composite, and includes an aisle-side bracket interconnecting one of said support legs and a window-side bracket interconnecting the other of said support legs by pinsselected from the group consisting of hollow pentagonal, hexagonal, heptagonal and octagonal pins; wherein said sandwich composite seat back is ultrasonically welded to said brackets.
An envelope style bus seats back cushion may be employed over a plurality of seat back configurations. The seat back may comprise a substrate which is solid throughout made from composite thermoplastic or thermoset polymers. Alternatively, theseat back may be made from a reinforced substantially hollow sandwich composite. The sandwich composites may include two polyurethane composite planar surfaces separated by a core material. When sandwich composites are used they may be bolted,adhesively bonded or ultrasonically welded to the brackets.