| 摘要 |
A seat and lumbar motion chair having a lumbar support assembly which is coupled to the seat and a mounting assembly mounting the seat and the lower end of the lumbar support for movement in a generally horizontal orientation in fore and aft directions. Movement of the seat is along an upwardly tilting path having a compound radius of curvature centered proximate to the mass of a person seated on the seat. The lumbar support mounting assembly is movable at two points, namely, in the fore and aft direction at the rear of the seat and pivotally at the back support. The seating apparatus further includes a back support positioned to engage the person's upper back in the thoracic region. A method including the steps of employing a seat and lumbar support assembly mounted for movement relative to the back support along a fore and aft direction to maintain contact between the person's buttocks with the seat and contact of the lower back with the lumbar support during motion of the person's body. The chair can employ a shock absorber device to control seat motion, a seat pan formed with a pelvic cradle pocket, pummel and side bolsters, a seat pan safety net, specialized seat belts, and apparatus for selective adjustment of the reclining angle between said back support and the seat.
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