A motorized lifting rack that selectively lifts and lowers a barbell through linear actuators is provided. The powered lifting rack can engage a barbell at floor level. The linear actuators can also selectively raise and lower safety bars design to “spot” the barbell for a single user. The powered lifting rack is embodied in a system that includes a platform that the safety bars can nest in. The platform provides a plurality of actuating benches for a user of the barbell to utilize.

A motorized lifting rack that selectively lifts and lowers a barbell through linear actuators is provided. The powered lifting rack can engage a barbell at floor level. The linear actuators can also selectively raise and lower safety bars design to “spot” the barbell for a single user. The powered lifting rack is embodied in a system that includes a platform that the safety bars can nest in. The platform provides a plurality of actuating benches for a user of the barbell to utilize.

A volumetrically efficient mechanism for raising and lowering sitting assemblies to provide ready access below them. A scissors assembly is selectively moved from a collapsible to an extended (raised) configuration by an electric motor with a telescopic arm that acts on hingedly mounted U-shape frames. The distal ends of the frames include wheels that ride over a lower support assembly. The telescopic arm is mounted to one of the distal upper member of the frames and the motor is rigidly mounted to the upper end of the other U-shape frame or to the lower support assembly causing them to selectively move between the two extreme configurations.

A volumetrically efficient mechanism for raising and lowering sitting assemblies to provide ready access below them. A scissors assembly is selectively moved from a collapsible to an extended (raised) configuration by an electric motor with a telescopic arm that acts on hingedly mounted U-shape frames. The distal ends of the frames include wheels that ride over a lower support assembly. The telescopic arm is mounted to one of the distal upper member of the frames and the motor is rigidly mounted to the upper end of the other U-shape frame or to the lower support assembly causing them to selectively move between the two extreme configurations.

Provided is a device for changing a frame angle of a foldable article. The device combines frames using a connecting and assembling member and an elastic string and makes up a leg or a support frame of the foldable article. The connecting and assembling member with which a first end of the elastic string is combined and which has multiple combination grooves in such a manner that the frame combined with a second end of the elastic string is selectively combined with the connecting and assembling member. The first end of elastic string is combined with the connecting and assembling member, and the second end of the elastic string is combined with the frame such that the frame can be elastically operated. The frame is combined with the first end of the elastic string and is elastically insertable into or separable from the connecting and assembling member.

Foldable chair assemblies are provided. More particularly, foldable chair assemblies are provided with independently adjustable legs. The foldable chair assemblies with independently adjustable legs may be stably placed on uneven surfaces (e.g., sloped ground, uneven ground, hill sides, sloped floors, etc.). The foldable chair assemblies may include a chair that is swivelable and/or pivotable with respect to a base. The chairs may include a chair back that is pivotable with respect to a chair seat.

Foldable chair assemblies are provided. More particularly, foldable chair assemblies are provided with independently adjustable legs. The foldable chair assemblies with independently adjustable legs may be stably placed on uneven surfaces (e.g., sloped ground, uneven ground, hill sides, sloped floors, etc.). The foldable chair assemblies may include a chair that is swivelable and/or pivotable with respect to a base. The chairs may include a chair back that is pivotable with respect to a chair seat.

The multi-height table and chair set is a kit. The multi-height table and chair set comprises a table structure and one or more chair structures. The table structure is a furniture item known as a table. Each of the one or more chair structures is a furniture item known as a chair. The chair is defined elsewhere in this disclosure. The multi-height table and chair set is configured for use with a personal data device. The personal data device remotely controls the elevation of the tabletop of the table structure. The personal data device remotely controls the elevation of the bench of each of the one or more chair structures. The table structure is formed from a master structure. Each of one or more chair structures is formed from the master structure.

The multi-height table and chair set is a kit. The multi-height table and chair set comprises a table structure and one or more chair structures. The table structure is a furniture item known as a table. Each of the one or more chair structures is a furniture item known as a chair. The chair is defined elsewhere in this disclosure. The multi-height table and chair set is configured for use with a personal data device. The personal data device remotely controls the elevation of the tabletop of the table structure. The personal data device remotely controls the elevation of the bench of each of the one or more chair structures. The table structure is formed from a master structure. Each of one or more chair structures is formed from the master structure.

Foldable chair assemblies are provided. More particularly, foldable chair assemblies are provided with independently adjustable legs. The foldable chair assemblies with independently adjustable legs may be stably placed on uneven surfaces (e.g., sloped ground, uneven ground, hill sides, sloped floors, etc.). The foldable chair assemblies may include a chair that is swivelable and/or pivotable with respect to a base. The chairs may include a chair back that is pivotable with respect to a chair seat.