The bus seats include an aisle support having a hexagonally shaped aperture or cavity
and a window side support having a hexagonally shaped aperture or cavity. A bottom substrate or seat is hinged to the aisle support and the window support. The bus seat includes a seat back having a hexagonally shaped apertures or cavities. A hexagonally shaped pin or torsion member interengages the hexagonally shaped aperture or cavity of the aisle support and one of the hexagonally shaped apertures orcavities of the seat back. Another hexagonally shaped pin or torsion member interengages the hexagonally shaped aperture or cavity of the window side support and the other hexagonally shaped aperture or cavity of the bus seats back. The hexagonally shapedpins or torsion members in combination with the apertures prohibit rotation of the seat back with respect to the aisle and window side supports unless a forceful load as described above is applied. Preferably, the seat back and supports are made of apolymeric material. The hexagonally shaped cavities are manufactured without significant knit lines formed as the flowability of fiber reinforced polymeric material is enhanced.
School bus seats comprise a pin having a cross-sectional shape selected from the group consisting of a pentagon, a hexagon, a heptagon and an octagon. First and second brackets include an aperture selected correspondingly from the groupconsisting of a pentagon, a hexagon, a heptagon and an octagon. First and second supports include an aperture selected correspondingly from the group consisting of a pentagon, a hexagon, a heptagon and an octagon. The apertures in the brackets andsupports are formed in a fiber reinforced polymer such that the apertures are devoid of knit lines. The pins reside in the apertures of the supports and brackets inhibiting rotation of the brackets with respect to the supports. A seat back is securedto the brackets.
School bus seats comprising a superstructure having vertical left and right side supports for supporting a seat back is also disclosed and claimed. Each of the side supports includes a fuse and the fuses are inelastically deformable upon theapplication of force to the superstructure.