An assistive device for standing tasks allows for a reduction of effort on the part of a user while engaged in tasks or activities that are stationary or nearly stationary that lessens the strain on the bones, joints, and muscles normally used for standing while ensuring a proper alignment of the pelvis and spine.

The purpose of this device is to give assistance to a person that is standing in a particular area for an extended amount of time. This is achieved for people of different heights by having a rotating joint at the base. A saddle joint at the base of the housing enables this device to be adjustable. The seat portion can rotate to adjust to different people. This supporting system is designed to bear some of the load while standing, to accommodate a more ergonomic environment for the person standing.

A tiltable stool includes a seat support, a seat, and a tilt mechanism. The seat is mounted to an upper end of the seat support. The tilt mechanism allows the seat to tilt in a desired direction. The tilt mechanism includes a coiled wave spring, an upper spring retainer and a lower spring retainer, a fastener bolt, and a tilt limiter. The upper spring retainer and the lower spring retainer are disposed opposite each other to sandwich the coiled wave spring therebetween. The fastener bolt pivotably holds the upper spring retainer in position. The tilt limiter is disposed inside the coiled wave spring and is secured to either one of the spring retainers. The tilt limiter includes a conical surface thereon which contacts a contact surface when the seat tilts to a predetermined tilt angle. The upper spring retainer is secured to a lower end of the seat support.

A piece of seating and supporting furniture with or without an armrest, comprising an upright and a basic seat and supporting structure (seat and structure) arranged thereon such that it can be pivoted about at least one horizontal axis, wherein the seat and structure has a seat surface which, in a first end position of pivoting about the horizontal axis, is arranged substantially in a horizontal plane, wherein the seat surface, in a second pivoting end position, is arranged transversely to the horizontal plane, wherein the seat and structure has a supporting surface arranged on a side of the seat and structure spaced apart from the seat surface. In another embodiment, a first end of a spring is connected to the upright, a second end of the spring is connected to the seat and structure, and the spring assists pivoting of the seat and structure about the horizontal axis.

Left and right fixed arm plates extend upwardly from the seat of a chair. A left movable arm plate is above the left fixed arm plate and a right movable arm plate is above the right fixed arm plate. Parallel left links couple the left fixed plate and the left movable plate in parallelogram manner. Parallel right links couple the right fixed plate and the right movable plate in parallelogram manner. A left arm rest is coupled to the left movable plate and a right arm rest is coupled to the right movable plate. A gas lift cylinder including an upper cylinder secured to the seat reciprocable within a lower cylinder. The upper cylinder is urged upwardly. A bracket rotatably couples a lower foot support to a lower cylinder. A leaf spring couples the seat and the bracket.

An apparatus includes at least one supernumerary artificial limb and a base structure configured to couple with a human body. The base structure includes a sensor that obtains a measurement regarding load of the human body. The proximal end of the supernumerary artificial limb is coupled to the base structure. The apparatus further includes a processor operatively coupled with the sensor and configured to receive the measurement from the sensor. The processor is also configured to generate a control signal to change at least one of a position of the supernumerary artificial limb and a torque exerted by the supernumerary artificial limb based on the measurement regarding the load.

An ergonomic chair has a back support member and means for arranging and supporting legs of the user in an asymmetric configuration, with a first leg extending in front of a body of the user and a second leg aligned with or extending behind the body of the user. An angle between the first and second legs in a side view can be at least 30 degrees. The means for arranging and supporting legs can comprise one or more fixed structures that support the first leg in a first orientation, or one or more dynamic structures that can be positioned by the user to support the first leg in a first orientation. In some embodiments, with the legs of the user in the asymmetric configuration, a centerline of the user is offset from a centerline of the back support member with respect to a lateral direction.

A leaning chair can include a base defining a lower surface that rests on a floor, the base including a support surface; a shaft coupled to the base, the shaft defining a first end and a second end; a flexible mount coupling the first end of the shaft to the base, the shaft extending through the mount; a pivot pin located underneath the mount, the first end of the shaft resting on the pivot pin, and being configured to be housed inside the mount, the pivot pin being configured to pivot on the support surface; and a user support member coupled to the second end of the shaft.

A seating device includes a base and a seat post extending from the base. The seat post has a first end adjacent the base, a second end opposite the first end, and a longitudinal axis extending between the first end and the second end. The seating device further includes a seat supported by the seat post above the base and a first rocking assembly coupled to the base and the first end of the seat post. The first rocking assembly is operable to angularly displace the seat post relative to the base. The seating device further includes a second rocking assembly coupled to the seat and the second end of the seat post. The second rocking assembly is operable to angularly displace the seat relative to the seat post.

A wearable chair robot system is provided and includes a first link having a first end hinge-connected to a heel of a user and a second end rotating up and down about the first end distal to a foot of the user, and supported on the ground at a lower limit. The system further includes a second link having a first end hinge-connected to the user above the first end of the first link and a second end that extends distal to the user. A third link has a first end hinge-connected to the second end of the link and a second end hinge-connected to the second end of the first link. Further, a driving unit has a first end hinge-connected to the user above the first end of the second link and a second end extending downward and hinge-connected to the second end of the first link or the third link.