A seating furniture chassis including a drive mechanism, a drive shaft, a gear mechanism and a lifting mechanism. The drive mechanism sets the drive shaft in rotation, while the lifting mechanism raises and lowers a seat face. The drive shaft is connected to the lifting mechanism via the gear mechanism. Rotation of the drive shaft in a first direction triggers raising of the seat face, while rotation of the drive shaft in a second direction triggers lowering of the seat face.

A seating furniture chassis including a drive mechanism, a drive shaft, a gear mechanism and a lifting mechanism. The drive mechanism sets the drive shaft in rotation, while the lifting mechanism raises and lowers a seat face. The drive shaft is connected to the lifting mechanism via the gear mechanism. Rotation of the drive shaft in a first direction triggers raising of the seat face, while rotation of the drive shaft in a second direction triggers lowering of the seat face.

The present invention relates generally to a furniture support structure that can be used, for example, on beds, desks, tables, chairs, and other furniture. In some embodiments, a furniture support structure comprises a hollow elongated metal tube having a first end and a second end, wherein the first end is crimped and comprises a hollow circular cross-section and wherein at least a portion of the inner surface of the hollow circular cross-sectional portion of the first end is threaded. Some embodiments of the present invention also relate to devices for adjusting the height of a furniture item.

The present invention relates generally to a furniture support structure that can be used, for example, on beds, desks, tables, chairs, and other furniture. In some embodiments, a furniture support structure comprises a hollow elongated metal tube having a first end and a second end, wherein the first end is crimped and comprises a hollow circular cross-section and wherein at least a portion of the inner surface of the hollow circular cross-sectional portion of the first end is threaded. Some embodiments of the present invention also relate to devices for adjusting the height of a furniture item.

A seating device can include a height adjustment mechanism that permits a height of a seat to be adjusted. The height adjustment device can be configured so that a user may provide a force to provide upward height adjustment and may also provide a force to allowing for a controlled downward height adjustment of the seat. The height adjustment device can include an actuator that is connected to a rotatable member via linkages. An end of one of the linkages may engage the rotatable member to prevent rotation of the rotatable member, which can prevent height adjustment of the seat. Movement of the actuator may cause the linkages to move so that the rotatable member is free to rotate so that a user may provide a force on the seat to effect height adjustment of the seat and/or cause the seat to be lowered at a desired speed.

The present invention relates to a piece of furniture comprising at least one adjustable use portion, in particular an office chair having an adjustable seat and/or an adjustable backrest. The present invention further relates to an adjusting assembly that can be used, for example, for a piece of furniture of said type.

A chair is provided. The chair includes a seat having an adjustable seat height and a central column extending from the seat. A plurality of legs with inner and outer leg ends are spaced around the central column with the inner leg end proximate the central column. A rib spans between a pair of adjacent legs of the plurality of legs and is fastened to each leg of the pair of adjacent legs. The chair also includes a plurality of wheel assemblies, wherein each one respective wheel assembly of the plurality of wheel assemblies is coupled to a respective one leg of the plurality of legs.

A chair is provided. The chair includes a seat having an adjustable seat height and a central column extending from the seat. A plurality of legs with inner and outer leg ends are spaced around the central column with the inner leg end proximate the central column. A rib spans between a pair of adjacent legs of the plurality of legs and is fastened to each leg of the pair of adjacent legs. The chair also includes a plurality of wheel assemblies, wherein each one respective wheel assembly of the plurality of wheel assemblies is coupled to a respective one leg of the plurality of legs.

An adjustable stool seat may include a seat, a pedestal leg assembly, and a lift cylinder. The seat includes a bushing member. The pedestal leg assembly includes a plurality of legs and a center column. Each plurality of legs extends towards a support surface and is coupled to the center column. The lift cylinder includes a rod and a cylinder assembly. The rod is fixedly slidable into the cylinder assembly to a cylinder depth. The cylinder depth is selectable from a plurality of cylinder depths. The cylinder assembly is fixedly insertable into the center column to a column depth. The column depth is selectable from a plurality of column depths. The rod includes a rod end and the rod end is coupled to the bushing member.

An adjustable stool seat may include a seat, a pedestal leg assembly, and a lift cylinder. The seat includes a bushing member. The pedestal leg assembly includes a plurality of legs and a center column. Each plurality of legs extends towards a support surface and is coupled to the center column. The lift cylinder includes a rod and a cylinder assembly. The rod is fixedly slidable into the cylinder assembly to a cylinder depth. The cylinder depth is selectable from a plurality of cylinder depths. The cylinder assembly is fixedly insertable into the center column to a column depth. The column depth is selectable from a plurality of column depths. The rod includes a rod end and the rod end is coupled to the bushing member.