The invention discloses a seat pan (20), being formed from a first thermoplastic composite material into a one-piece pan, the seat pan (20) having a weight loading portion (201), wherein at least one slot (2010) is provided in the area of the weight loading portion (201) of the seat pan (20), and covering strips (2012) are formed by overmolding on the side edges of straps (2011) separated by the slot (2010) and extending along at least a portion of the circumference of the slot (2010) so as to reinforce the straps (2011), the covering strips (2012) being made of a second thermoplastic composite material. Furthermore, the invention discloses a seat (1) comprising the above seat pan (20).

A novel lightweight, high stability ergonomic chair, enabling sitting, and leaning in a perched intermediary position between sitting and standing. An inclined saddle type seat is supported by three legs. A forward chair leg is located between the feet of, and beneath the center of gravity of the seated person. Two chair legs extend rearward. The chair permits rocking backwards, diagonally forward, and rocking about the forward chair leg. This “active seating” provides for easy transitions between sitting and standing, shifting of weight, and conveys an open positive body language. The chairs may be constructed of various rigid and flexible materials, with optional features including; armrests, footrests, caster wheels, cushioning, and a standing desk type work surface. The chair eliminates the need for connection to a base platform beneath the user's feet.

The present invention relates to support apparatus for supporting at least a portion of a gluteal region of a user while the user is seated in a seating apparatus comprising a seating surface, a back support surface and a transition region at the intersection of the seating surface and the back support surface. The support apparatus a support member structured to support at least a portion of the gluteal region of the user. The support apparatus further comprises a support element structured to position the support member at the transition region of seating apparatus such that the support member extends between the seating surface and the back support surface of the seating apparatus.

A seating configuration is described. The seating configuration includes a seat. The seat includes a feature to retain a user in a specific position on the seat. The seating configuration includes a first back support. The first back support is positioned adjacent a posterior pelvic area of the user. The seating configuration includes a second back support. The second back support is positioned adjacent to the thoracic area of the user. The seat, the first back support, and the second back support together can be configured to create a natural alignment of a spinal column of the user.

A manufacturing method of a seating device includes manufacturing an outer skin; manufacturing a core member via a foaming process; wrapping the core member in the outer skin, coupling a mounting plate at a bottom surface of the core member; and selectively coupling a mounting structure to the mounting plate to form the seating device. The outer skin is constructed to have a top skin layer adhered on a top surface of the core member, a side skin layer adhered on a side surface of the core member, and a bottom skin layer adhered on a bottom surface of the core member. Particularly, the top skin layer of the outer skin is adhered on the top surface of the core member edge-to-edge to initially align and retain the outer skin on the core member.

A chair having a chair back with an enlarged and curved seating surface is described. The raised seating surface has a front to back dimension (depth) substantially similar to its left to right dimension (width) approximately 0.80 meters. The seating surface is further curved upwardly on the left and right sides relative to the front to back center of the seating surface. In one variation, the radius of curvature pertaining to the curve is approximately 0.5 meters.

Apparatus, systems, and methods are disclosed involving a seat cushion configured as a partially-open annular ring, including a circular hollow space in a center of the ring, and a radial-arc-shaped opening in the ring forming a trapezium-shaped hollow space. The cushion includes a top section, a middle section, and a base section, in which the top and middle sections form the partially-open annular ring. Both the circular hollow space and the trapezium-shaped hollow space are located corresponding to the user's spine and coccyx, with the trapezium-shaped hollow space located on a rear portion of the cushion. The circular hollow space frees the perineal region from external compression by avoiding having any portion of the center of the seat cushion pressing against it, and the trapezium-shaped hollow space frees the sacrococcygeal region from external compression by not having any portion of partially-open annular ring of the seat cushion pressing against it.

A support surface including a cutout on a bottom surface of the support surface. The cutout, which can include a plurality of cutouts, provides a controlled structural collapse of the support surface by varying a stiffness in a cross-section. That is, the area in which the cutouts are positioned collapses more easily than the surrounding area of the support structure, thus making the area with the cutouts perceived as being softer. The cutouts can reduce the peak pressures on the portion of the user's body (for example, the user's ischial tuberosities) that is positioned over the cutouts. The support surface can also include a low-friction interface extending across a top surface of the support surface.

A tilting seat for operators in a controlled environment, particularly for surgeons and the like, comprising a saddle, a chest support, a forehead support and a leg support connected to a base standing on the ground, such that the saddle, the chest support, the forehead support and the leg support are integrally movable with rotation about a horizontal-axis joint placed below the saddle, keeping the space over the joint free from movable elements while in use, guaranteeing the substantial lack of contamination in such space.

Disclosed is a fastening structure for a seating foam, comprising a foam and a reinforcement fabric, and characterized in that the fastening structure is directly provided at a reinforcement fabric at a location corresponding to a fastening position, and is connected to the reinforcement fabric. The fastening structure of the present invention simultaneously meets two functional requirements of a foam, namely reinforcement of a side B of the foam and fastening of an exterior side A of the foam. The novel fastening structure of the present invention saves space, is thin and light, enhances the strength of the foam against a pull-out force, and optimizes a foam production process.