Abstract: A platform assembly that attaches to a shaft. The platform assembly includes a hub that is mounted in a fixed position. Cradle supports extend from the hub. The cradle supports define open troughs having open tops between opposing side surfaces. Support arms are provided that are connected to the cradle supports with pivot connections. The pivot connections enable the support arms to rotate between an open position and a folded position. In the open position, each of the support arms lay flush in the open troughs. In the folded position, each of the support arms are angled away from the open trough. A flexible panel is supported by the support arms. The flexible panel is held taut in a horizontal plane when the support arms are in their open positions. The flexible panel is folded and collapsed when the support arms are moved to their folded positions.

Abstract: An ergonomic task chair having a front and a rear, including a laterally extending seat having a front and a rear, a back brace disposed above the rear of the seat, and a knee support disposed in the front of the chair, wherein the back brace and the knee support have a first position where there is a first minimum distance between the back brace and the knee support and a second position where there is a second minimum distance between the back brace and the knee support, the second minimum distance being less than the first minimum distance, wherein movement from the first minimum distance to the second minimum distance is triggered by a downward movement of the seat.

Abstract: An ergonomic task chair having a front and a rear, including a laterally extending seat having a front and a rear, a back brace disposed above the rear of the seat, and a knee support disposed in the front of the chair, wherein the back brace and the knee support have a first position where there is a first minimum distance between the back brace and the knee support and a second position where there is a second minimum distance between the back brace and the knee support, the second minimum distance being less than the first minimum distance, wherein movement from the first minimum distance to the second minimum distance is triggered by a downward movement of the seat.

Abstract: An ergonomic task chair having a front and a rear, including a laterally extending seat having a front and a rear, a back brace disposed above the rear of the seat, and a knee support disposed in the front of the chair, wherein the back brace and the knee support have a first position where there is a first minimum distance between the back brace and the knee support and a second position where there is a second minimum distance between the back brace and the knee support, the second minimum distance being less than the first minimum distance, wherein movement from the first minimum distance to the second minimum distance is triggered by a downward movement of the seat.

Abstract: An ergonomic task chair having a front and a rear, including a laterally extending seat having a front and a rear, a back brace disposed above the rear of the seat, and a knee support disposed in the front of the chair, wherein the back brace and the knee support have a first position where there is a first minimum distance between the back brace and the knee support and a second position where there is a second minimum distance between the back brace and the knee support, the second minimum distance being less than the first minimum distance, wherein movement from the first minimum distance to the second minimum distance is triggered by a downward movement of the seat.