The present invention provides a chair and a chair lifting adjustment control mechanism thereof. The chair lifting adjustment control mechanism comprises a base, an executing member slidably connected to the base for pressing a pushbutton of a telescoping member, and a drive-by-wire assembly with one end connected to the executing member to enable the executing member to produce a horizontal displacement. The drive-by-wire assembly comprises a dragline with one end connected to the executing member, and the executing member has a driving ramp for facing the pushbutton and pressing or relaxing the pushbutton during the horizontal displacement.

This is directed to a smart ergonomic chair and mobility system. The system can be used as a working station, a working chair, a mobility device, a personal care device, or a combination thereof. The system is designed to provide ergonomic seating posture for a person who is seated on the chair. The system is also designed to reduce body stress by providing automatic movements of parts of the chair at predefined time points.

A staircase mountable chair assembly for usage while working on a staircase includes a pair of supports. The supports are attached together and have a shape to retain the supports in an upright position. A base is attached to and extending outwardly from the supports. The base lies in a horizontal plane when the supports are positioned in the upright position. The base is positioned on an upper step when the supports are on a next adjacent lower step. A post is attached to and extending upwardly from the base. The post has an upper end with a seat attached thereto.

A staircase mountable chair assembly for usage while working on a staircase includes a pair of supports. The supports are attached together and have a shape to retain the supports in an upright position. A base is attached to and extending outwardly from the supports. The base lies in a horizontal plane when the supports are positioned in the upright position. The base is positioned on an upper step when the supports are on a next adjacent lower step. A post is attached to and extending upwardly from the base. The post has an upper end with a seat attached thereto.

A collapsible hunting tree stand includes a telescopic seat arrangement so that the height of the seat may be adjusted by hand, without requiring tools, to any desired height.

An adjustment mechanism is configured to be disposed between inner and outer tubes of a lifting device, and includes two angularly space-apart abutment modules configured to be disposed on an inner wall surface of the outer tube and each of which has an abutment unit configured to abut against an outer wall surface of the inner tube, and an adjustment module including an adjustment seat, and a pressing unit and a drive member both disposed on the adjustment seat. The drive member is operable to drive movement of the adjustment seat relative to the outer tube so as to push the pressing unit against the outer wall surface of the inner tube to thereby abut the outer wall surface of the inner tube against the abutment units of the abutment modules.

A ball chair may comprise a chair frame, a ball body and an adjusting unit. The chair frame has a connecting base and a legs base, and a supporting column formed therebetween is configured to achieve a telescopic action thereby adjusting a height of the ball chair. The connecting base is formed in a concave shape to form a housing space therein, and an annular frame is formed at an upper end of the connecting base. The ball body is configured to be coupled on the connecting base of the chair frame, and the annular frame is configured to couple with an outer periphery of the ball body thereby limiting a position thereof. As a result, the ball chair is suitable for different statures of users and enables the users to sit thereon for training or rehabilitation.

A ball chair may comprise a chair frame, a ball body and an adjusting unit. The chair frame has a connecting base and a legs base, and a supporting column formed therebetween is configured to achieve a telescopic action thereby adjusting a height of the ball chair. The connecting base is formed in a concave shape to form a housing space therein, and an annular frame is formed at an upper end of the connecting base. The ball body is configured to be coupled on the connecting base of the chair frame, and the annular frame is configured to couple with an outer periphery of the ball body thereby limiting a position thereof. As a result, the ball chair is suitable for different statures of users and enables the users to sit thereon for training or rehabilitation.

Provided are systems and methods for a telescope observation chair assembly. The assembly includes a seat having a pad, a telescoping portion extending from the pad, and an adjustment assembly at least partially disposed interior to the telescoping portion. The assembly also includes a housing comprising one or more walls having one or more slots and one or more grooves cutout therefrom, the one or more walls receiving the telescoping portion of the seat. The assembly further includes a footrest.

Provided are systems and methods for a telescope observation chair assembly. The assembly includes a seat having a pad, a telescoping portion extending from the pad, and an adjustment assembly at least partially disposed interior to the telescoping portion. The assembly also includes a housing comprising one or more walls having one or more slots and one or more grooves cutout therefrom, the one or more walls receiving the telescoping portion of the seat. The assembly further includes a footrest.