To create a stable and safe frame, more particularly in the form of a tripod, having a plurality of rod-like legs (2), which are fastened centrally to a connection part (3), wherein the frame (1) can be folded up into a space-saving transportation position, in which the legs are oriented substantially in parallel, and the frame can be folded out into a usage position, in which the legs are crossed, the invention proposes that at least one concavely rounded support surface (5) for providing support over an area of the leg surface is arranged between the legs (2), more particularly that two support surfaces (5, 5′) of this type are provided, which in the usage position are in contact with an area of the respective leg surface opposite one another.

A system may include a seat assembly. The seat assembly may include a seat base, a seat portion mounted to the seat base, and an armrest assembly configured to be in an up position or a down position. The armrest assembly may include a handle operable by a user to lock or unlock at least one functionality of at least one adjustable seat assembly feature. Operation of the handle may be configured at least to: unlock the at least one functionality of at least one adjustable seat assembly feature while locking the armrest assembly from moving between the up position and the down position.

A chair supporting structure comprises a base frame having a plurality of connecting arms which is downwardly inclined; a lower distal end of each connecting arm being formed with outer threads for combining with the connecting units; a plurality of legs being installed at a bottom of the a seat of a chair; an upper end of each leg being formed with an insertion hole; and a plurality of combining units for combining the base frame and let set; an upper end of the combining unit being formed with a combining hole which has inner threads; so that the outer threads of each combining arm being threadly engaged with the inner threads of the combining hole of the combining unit; a lower end of the combining unit being tightly engaged to the insertion hole so that the base frame is combined with the legs.

A chair system may include a plurality of components that may include a seating surface having seating handles, a backrest having a backrest handle, a kickstand base, and a support frame. The configuration may generally provide a lightweight, comfortable chair system that may be easily adjusted, lifted, transported, arranged and stacked by any user, while still providing substantial structural integrity.

A chair with a frame with tubular elements, which comprises two inverted V-shaped elements that form the front legs and rear legs, are parallel and are joined substantially at their inner curvature to a rod-like crossmember, two L-shaped elements connected by the crossmember on which they are arranged in a parallel configuration so as to form a support for the back and for the seat, respectively with first substantially vertical portions thereof and second substantially horizontal portions.

A toting apparatus can include a bucket, a combination lid and seat cushion, and a harness for carrying the apparatus while the lid covers the top opening of the bucket and the cushion is in the inflated or deflated configuration. The cushion can be formed by a drop-stitch type bladder inflatable using a common hand-operated bicycle pump. The harness can include a belt that wraps around the bucket and a pair or diametrically spaced-apart straps that adjustably and snuggly attach to a central handle structure atop the lid. Various corresponding patches of hook-and-vane style fabric fasteners allow for releasable affixation of various components of the apparatus. Thus the harness can be made of durable flexible fabric.

A seat skate assembly is configured to be secured to a fitting of a seat assembly. The seat skate assembly includes a pin-retaining guide including a plurality of pin cavities configured to receive and retain one or more pins of the fitting, one or more wheel couplers, and one or more wheel members rotatably coupled to the wheel coupler(s). The wheel member(s) allow the seat assembly to be moved.

A physical conditioning and therapeutic conditioning system that, when configured and incorporated into the construction of a chair, has a seat, a base configured to rest on a surface, and a seat-support mechanism which is configured to couple the seat to the base and enables the seat, when unlocked in one embodiment, to be pivoted in any direction while rocking in the seat and using one's own body weight for resistance. Ideally the seat-support mechanism permits universal motion in all directions above a vertical axis, including front to back inflection and side-to-side inflection of at least 40° , including 360° of rotation on a universal type joint. The universal type joint is a ball joint consisting of a bearing stud and socket enclosed in a case, with all parts made of steel. In one embodiment, the bearing stud is tapered and fits into a hydraulic post. A ball joint is used to allow free rotation in two planes at the same time.

The universal ball joint when attached to the underside of a seat is surrounded by a metal caste collar, also attached to the underside of the seat, and with a locking system attached to the upper collar. Inserted into the upper collar, along with a lower collar attached to the arm support structure, surrounding the ball joint assembly is a hardened metal coiled spring, used ideally to stabilize, through compression, the seat in a horizontal position and allow for locking the seat in a horizontal position, when no force is applied or when not in use.

An adjustable chair, belonging to the field of office furniture, comprising a base frame. A chair back is disposed at the rear end of the base frame. A lifting assembly is disposed on the base frame and provided with a seat, and comprises a bottom frame and a top frame formed with sliding slots. The seat is disposed on the top frame and the seat angle can be adjusted. By adjusting the height of the chair through the lifting assembly and adjusting the rotation angle of the seat, users not only can stand and lean against the chair, but also can normally sit on the chair.

A rotary hanging chair having a cushion assembly, a rotary assembly and a leg tube assembly. The cushion assembly is rotatably connected to the leg tube assembly by means of the rotary assembly and comprises a cushion and a support frame. Two sides of the cushion are detachably connected to the support frame. The cushion is able to swing with respect to the support frame.