Seat assembly with movable seat and backrest and method

A seat assembly comprising:

• (a) a seat;
• (b) a seat mounting assembly mounting the seat in a near horizontal orientation for movement along an upwardly concaved arcuate seat path having a center of curvature above the seat and forward a backrest assembly;
• and
• (c) the backrest assembly including a backrest extending in a near vertical orientation, the backrest including a lower backrest member having a lower lumbar portion coupled for movement to the seat, an upper lumbar portion coupled for guided movement to a remainder of the backrest assembly, and an upper backrest member mounted above the lower backrest member, the upper backrest member being movably mounted to the remainder of the backrest assembly and coupled to the lower backrest for movement therewith,
• wherein the backrest further includes a recliner frame and the backrest member includes a backrest frame movably mounted to the recliner frame, and the recliner frame is tiltably mounted to the seat mounting assembly.

A method of providing a seat assembly comprising the steps of;

• mounting a seat in a near horizontal orientation for movement along an upwardly concaved arcuate path having a center of curvature above the seat and forward a backrest:
• mounting the backrest in a near vertical orientation proximate the seat for support of the back of a user while seated on the seat;
• and
• coupling a lower portion of the backrest to the seat for movement of the lower portion of the backrest with movement of the seat;
• and
• mounting an upper portion of the backrest for vertically extending movement in response to movement of the lower portion of the backrest
• wherein the step of mounting the backrest is accomplished by mounting the backrest to a recliner frame formed to support said movement of the lower portion of the backrest to position the backrest member by the user and
• having a mechanism formed for selective reclining of the position of the backrest by the user.