An exercise chair allows a user to obtain physical exercise at his or her desk or other workplace. An exemplary exercise chair may include a frame, including a base, an angled section angled upward from the front of the base, and a back support extending upward from the rear of the base; a seat support rotatably connected to the angled section; and at least one resistance element connected to a rear portion of the seat support and to the back support.

A device for moving the back and core muscles while sitting includes a rocking assembly that sits atop a base assembly, and optionally a height adjustment mechanism between the rocking assembly and the base assembly. The rocking assembly further includes a rocking mechanism that sits between a base plate or platform and a seat. The rocking mechanism can be, for example, a hollow or solid hemispheric- or dome-shaped rocking mechanism, an eccentric bicylinder rocking mechanism, and/or a rocking mechanism based on an arrangement of halfpipe members. The rocking mechanisms of the exercise chair allow to the seat to rock, wobble, and/or swivel with a side-to-side rocking motion, a front-to-back rocking motion, or both a side-to-side rocking motion and a front-to-back rocking motion.

Systems and methods are disclosed for a seat base for a saddle seat. An example seat base may include a first face, the first face forming a planar surface to allow the seat base to be arranged on a surface to be seated, and a second face, the second face forming a concave surface, the concave surface restricting the lateral movement of the saddle seat by guiding the round lower part of the saddle seat towards the lowest point of the concave surface.

An apparatus that supports a user in a variety of positions to comfortably perform tasks, such as applying one or more tattoos to skin of a subject is herein disclosed. The apparatus can be reconfigured to optimally position and support the arms and/or chest of the user. The apparatus includes a vertically movable armrest assembly. Armrests can support the user's forearms while supporting the users chest such that the user can comfortably perform tasks in front of a chest support of the stool. The armrest assembly can be translated vertically to accommodate the user's body to achieve desired positioning.

A convertible seat including: a support frame; and a user support having a support surface on one side defining a rounded periphery, the user support being movable from a first configuration supported by the support frame with the rounded periphery presented upwardly, to a second configuration supported by the support frame such that a seat or seat base is presented upwardly, the seat or seat base being substantially flat or at least less rounded than the rounded periphery, with the support surface being stowed substantially below the seat or seat base in the second configuration. The seat allows the attainment in a single unit both the healthy balance/core-strengthening of a fitness chair and a conventional chair.

Disclosed herein is a cylindrical rocker mechanism including a top assembly having a first cavity, a middle assembly including at least one middle lug aligned with the first cavity to facilitate insertion of a first pin therethrough thereby coupling the top assembly with the middle assembly, a second cavity aligned perpendicularly to the at least one middle lug, a bottom assembly having a horizontal plate, and at least one bottom lug aligned with the second cavity to facilitate insertion of a second pin therethrough thereby coupling the top assembly with the middle assembly, wherein the top, and middle assemblies move and roll in perpendicular directions thereby facilitating a friction dependent, substantially slip-less, omnidirectional, rolling and a tilting motion of the top assembly in response to a force applied by a subject to top assembly.

An exercising device includes a base placed on a plane, a cover pivotally connected with the base, and an exercise apparatus mounted between the base and the cover. The cover has a side pivotally mounted on a side of the base. The cover is pivoted relative to the base to open or close a top face of the base. The exercise apparatus includes a leg working unit mounted on the base. Thus, the exercising device is stored easily and conveniently and is adapted to function as furniture. The exercising device also has a dustproof function.

An active seat includes a seat disposed at a first end of a body; a convex surface disposed at a second end of the body; and a stacking notch defined at an intermediate location along the body. The convex surface defines at least a first rocking path about which the active seat tilts. The stacking notch defines a flat surface recessed laterally inwardly from an outer periphery of the body taken at the first and second ends.

The Chair Exerciser is an apparatus and method to exercise one's core, back, and legs while working on tasks that are normally performed seated. These tasks include computer work, watching television, or computer gaming. The Chair Exerciser fits on a regular chair and one sits upon it. The Chair Exerciser's resistance can be adjusted to the suit the needs of the user. The multitasking of work and exercise is an attractive benefit to the Chair Exerciser. The Chair Exerciser can also be formed as an integral part of the chair as opposed to a portable unit.

The invention relates to a method for using a cushion, in particular for a chair, said cushion having a first cushion element (6) that can be moved with an associated degree of freedom. In said method, a sensor (98a, 98b, 98c, 98d) integrated into the cushion is used to sense the position or the change in position relative to at least one first cushion element (6), with respect to at least one degree of freedom associated with said element. The sensor (98a, 38b, 98c, 98d) is coupled to an interface (93) for the wireless output of measured values. The sensor (98a, 98b, 98c, 98d) senses measured values and sends at least some of the measured values over the interface (93) to a device (70, 80) outside the cushion, said device (70, 80) receiving and evaluating the measured values and emitting an output signal.