seat

Abstract

A seat is provided, comprising: at least two strap elements (12) for providing a seating area for a seated user, the seating area extending between an anterior side (14) and a posterior side (16); one or more anterior support elements (20), an anterior end portion of each strap element (12) being coupled to the one or more anterior support elements (20), the one or more anterior support elements (20) supporting the strap elements (12) at the anterior side (14) of the seating area; and a plurality of posterior support elements (18), a posterior end portion of at least a first strap element (12) being coupled to at least a first one of the posterior support elements (18) and a posterior end portion of at least a second strap element (12) being coupled to at least a second one of the posterior support elements (18), the posterior support elements (18) supporting the strap elements (12) at the posterior side (16) of the seating area, wherein the strap elements (12) extend between the anterior side (14) and the posterior side (16), and wherein the strap elements (12) run towards one another in a direction from the posterior side (16) to the anterior side (14).

Description

[0001] New PCT Patent Application

[0002] Herr Dr. Jorge Calisse

[0003] Vossius Ref.: AJ3736 PCT S5

[0004] 5 Seat

[0005] Field of the invention

[0006] The present invention relates to a seat. More particularly, the present invention relates to a seat for a seated region of a chair, such as an office chair, a bus chair, a stool or other seat devices.

[0007] Background of the invention

[0008] Known seat shapes for chairs are flat, curved or formed like a saddle. These seats may be made from 15 fabric that is stretched around a frame of the chair or may be made from a rigid or hard shell, sometimes with cushion such as foam arranged underneath. Designs incorporating such frame are known, e.g., from WO 03 / 082057 Al and US 2018 / 170214 Al.

[0009] The seated position of a seated user on the seat is important for comfort or discomfort of the seated 20 user, especially when the user sits for long periods of time. A seated position of the pelvis in relation to hips and spine of the seated user is important for the balance of the upper body of the seated user. The body compensates any misalignment or deviations with tissue elongation or contraction between the seated and the non-seated / relaxed position of the bony skeletal structures of the user. Tissue deformations of the seated user create discomfort and even complaints. Spine back pain, skin 25 irritations, permanent muscle deformations, atrophies or body movement limitations may be the effect of long and enduring wrong sitting positions.

[0010] Known seats try to ameliorate these problems using, for example, cushions with different technical structures and materials such as upstanding inflatable bladders, sealed bladders or pads containing 30 fluid, foam, rubber, or a combination thereof. However, prolonged sitting will cause the tissue around the bony skeletal structures of the seated user to adapt or deform according to the shape of the seat. Such adaptions or deformations of the muscles and / or tissue may result in deformation of the user's buttock and / or thigh which may still negatively affect the seated user.

[0011] 35 It is thus an object of the present invention to provide an improved seat which ameliorates at least some of the drawbacks encountered in prior art seats or seat structures.

[0012] Solution to the problem These and other objects, which become apparent upon reading the description, are solved by the subject-matter of the independent claims. Further embodiments and developments are provided in the dependent claims.

[0013] According to a first aspect of the present invention, a seat is provided. The seat comprises at least two strap elements for providing a seating area for a seated user, the seating area extending between an anterior side and a posterior side; one or more anterior support elements (which may also be referred to as first support elements herein), an anterior end portion of each strap element being coupled to the one or more anterior support elements, the one or more anterior support elements supporting the strap elements at the anterior side of the seating area; and one or more posterior support elements (which may also be referred to as second support elements herein), a posterior end portion of each strap element being coupled to the one or more posterior support elements, the one or more posterior support elements supporting the strap elements at the posterior side of the seating area, wherein the strap elements extend between the anterior side and the posterior side, and wherein the strap elements run towards one another in a direction from the posterior side to the anterior side.

[0014] Preferably, the seat includes a plurality of posterior support elements, wherein a posterior end portion of each strap element is coupled to a respective one of the posterior support elements, the respective one of the posterior support elements supporting the respective strap element at the posterior side of the seating area.

[0015] At least two of the at least two strap elements may be disconnected at the posterior side of the seating area, such as mechanically disconnected, from each other. In other words, at least two of the posterior support elements may be disconnected from each other. In still other words, at least a first one of the posterior support elements may be uncoupled, such as mechanically uncoupled, from at least a second one of the posterior support elements. In still other words, at least a first one of the posterior support elements may be configured to move independently of at least a second one of the posterior support elements, preferably configured to move independently at least in a longitudinal direction of the respective strap element and / or towards the anterior side.

[0016] Within this disclosure, the terms "anterior" and "posterior" are to be understood as anatomical terms. For example, the term "anterior" shall be understood as "front" and the term "posterior" shall be understood as the "rear" or "back". In other words, the "anterior side" of the seating area shall be understood as the front side of the seating area and the "posterior side" of the seating area shall be understood as the rear side or back side of the seating area.

[0017] The present invention is based at least partially on the idea that strap elements which extend between the anterior side and the posterior side of the seating area are suited to conform to the shape of the seated region of the seated user. The present invention is further based on the idea that the strap elements are only supported at one or more anterior support elements and at one or more posterior support elements. In other words, the strap elements may sag, such as freely sag, in between the one or more anterior and posterior support elements, and / or may be unsupported in this area. This may be beneficial for allowing the strap elements to conform and adjust to the buttocks or bony skeletal structures in the seating region of the seated user.

[0018] The strap elements may run towards one another in a direction from the posterior side of the seating area to the anterior side of the seating area. In other words, strap elements may diverge towards the posterior side, such as, for example, in a fan-shaped manner, and / or fan out or spread out in the posterior direction. This way a saddle-like shape of the seating area may be formed.

[0019] In the seat according to the present invention, each strap element may conform to the seating area of the seated user. Without wanting to be bound by theory, it is believed that, with the strap elements unsupported in between the anterior and posterior support elements, pressure on parts of the seating area may be reduced, resulting in more comfort for the seated user and allowing for longer and comfortable sitting periods for the seated user. Particularly, a coccyx and / or sacrum area of the seated user may be excluded by the strap elements to reduce pressure on these regions of the seating area.

[0020] In a preferred embodiment, the strap elements of the seat converge, preferably join, at the anterior side of the seating area. A single anterior support element may be used to support the anterior end portions of the strap elements.

[0021] Preferably, the seating area converges at the anterior side.

[0022] Preferably, the seating area is frameless between the anterior support element and the posterior support elements.

[0023] In other words, the seat and / or seating area preferably does not have a rigid frame extending around the strap elements on the right and / or left side of the seating area. Preferably the seat and / or seating area does not have a rigid frame extending around the strap elements on the right and / or left side of the seating area via which the strap elements are supported in between the anterior support element and posterior support elements.

[0024] Preferably, the strap elements are configured for conforming to a seating region of the seated user, preferably wherein the strap elements are non-rigid elements and / or flexible elements. Fabric materials, textile material, belt materials, woven / webbing fabric materials, and / or reinforced or stiffer portions of a fabric may be used for forming the strap elements. Preferably, the strap elements are band elements and / or belt elements, preferably wherein a width of the strap elements is larger than a thickness of the strap elements, preferably larger by a factor of greater than 1, more preferably at least 40. The length may be measured in longitudinal direction of the strap element between the anterior end portion and the posterior end portion of the strap element. The width may be measured perpendicular to the length of the strap element, preferably in a seating face of the respective strap element.

[0025] More generally, a strap element may be an elongated, preferably to some extent flexible, band or strip or belt element configured for holding something or someone, such as a seated user.

[0026] Preferably, the strap elements include stretchable and / or non-stretchable sections or regions, preferably wherein the strap elements include a stretchability measured in a width and / or longitudinal direction of the respective strap element, the stretchability being maximal 20%, preferably maximal 10%, more preferably maximal 2%. The stretchability in longitudinal direction may be the same or different from the stretchability in width direction.

[0027] Standards such as DIN EN 1492-1, FAA-TSO-C22g and SAE AS8043, or EN813 may be used for deriving the strap elements. DIN EN 1492-1 describes flat woven webbing slings that are made of man-made fibres for general purpose use. For aircraft safety belts, the minimal requirements are written in FAA-TSO-C22g and SAE AS8043. The specified elongations are in the range between 15% to 2%. According to the EN 813 "Personal fall protection equipment - Sit harnesses", the straps width must be wider than 43mm on the load bearing parts exert pressure on the body, and the back support shall cover a minimum overall surface area of 200 cm2. Upholstery straps may also be utilized and are manufactured from natural fibers such as jute, hemp, or linen, or from composites of natural fibers and polymers. These straps possess a tear resistance of at least 5 kN.

[0028] The strap elements of the seat may cover in total a surface area of 150 cm2, preferably 200 cm2, more preferably 250 cm2, or at least 200 cm2.

[0029] Preferably, the strap elements are arranged to support a femoral, and / or sit bone and / or pelvic, and / or pubic seating region of the seated user.

[0030] Preferably, the strap elements and posterior support elements are arranged to support at least 30%, preferably at least 60%, more preferably at least 90% of a femoral seating area of the seated user. Preferably, the strap elements span over an angle measured from a parallel plane to a mounting base of the seat at a posterior strap fixation of at least 30°, preferably at least 60°, more preferably at least 85°.

[0031] Preferably, the strap elements span over an angle measured from a parallel plane to a mounting base of the seat at an anterior strap fixation of maximal 45°, preferably maximal 30°, more preferably maximal 10°.

[0032] The angles may be measured in a plane parallel to a middle plane or sagittal plane of the seating area, and / or may be measured in a plane perpendicular to a seating face of the respective strap element.

[0033] Preferably, the seat includes at least four strap elements, preferably at least six strap elements, more preferably at least eight, and / or a whole-numbered multiple of two strap elements. Preferably, the seat includes 10 strap elements (e.g., belts) or less, preferably 8 strap elements (e.g., belts) or less, more preferably 6 strap elements (e.g., belts) or less.

[0034] The strap element may have a straight shape or a trapezoidal shape, a tailored shape or a combination thereof.

[0035] Preferably, a first set of strap elements, preferably two strap elements or a whole-numbered multiple of two strap elements, is arranged to support a sit bone region of the seated user, and a second set of strap elements, preferably two strap elements or a whole-numbered multiple of two strap elements, is arranged to support a femoral seating region of the seated user. A third set of strap elements, preferably two strap elements or a whole-numbered multiple of two strap elements, may be arranged to support a seating region between the sit bone region and an inner side seating region of the seated user.

[0036] Preferably, the strap elements that support the femoral seating region are arranged laterally from the strap elements that support the sit bone region. The term "laterally" is to be understood in anatomical terms. For example, "lateral" means that the strap element(s) that support the sit bone region are arranged at a more medial position than the strap element(s) that support the femoral seating region.

[0037] Preferably, the strap elements or sets of strap elements are arranged symmetrical with respect to a middle plane or sagittal plane of the seating area, and / or provide equal support for a left and right side of the seated user, and / or are arranged symmetrically around a coccyx region of the seated user, and / or are arranged symmetrically around a buttock of the seated user. Preferably, inner strap elements or a set of inner strap elements have a different (e.g. longitudinal) length compared to outer strap elements or a set of outer strap elements, respectively.

[0038] The longitudinal length of the respective strap element may depend on the way the respective strap element is attached to the respective anterior and / or posterior support element(s). If the posterior side is fixed, the longitudinal lengths of the strap elements may be approximately the same or with a difference of some centimeters, such as, e.g. 5 cm, between them. The lateral strap elements may be shorter or equal in length compared to the medial strap elements. If the posterior side is movable or rotatable, the longitudinal lengths of the strap elements may be different between the sit bone region and the femoral seating region. The longitudinal length of the strap element(s) on or around the femoral seating region may be longer compared to the length of the strap element(s) supporting the sit bone region.

[0039] Preferably, the posterior support elements are arranged around a sagittal plane, wherein the sagittal plane includes a central anterior point.

[0040] Preferably, the posterior support elements are arranged at different angles from the sagittal plane, and / or at different radii from the central anterior point and / or at different rotational angles around the central anterior point.

[0041] Preferably, in a seat with a total of four strap elements or more, the posterior support elements associated with two outer strap elements are arranged symmetrically around the sagittal plane, and / or the posterior support elements associated with two inner strap elements are arranged symmetrically around the sagittal plane.

[0042] Preferably, in a seat with a total of four strap elements or more, the posterior support elements associated with two outer strap elements are arranged at an angle from the sagittal plane in a region between 30° and 85°, and the posterior support elements associated with two inner strap elements are arranged at an angle from the sagittal plane in a region between 5° and 50°.

[0043] Preferably, in a seat with a total of four strap elements or more, the posterior support elements associated with two outer strap elements are arranged symmetrically around the sagittal plane at an angle from the sagittal plane in a region between 30° and 85°, and the posterior support elements associated with two inner strap elements are arranged symmetrically around the sagittal plane at an angle from the sagittal plane in a region between 5° and 50°.

[0044] Preferably, in a seat with a total of six strap elements or more, the posterior support elements associated with two outer strap elements are arranged symmetrically around the sagittal plane at an angle from the sagittal plane in a region between 40° and 85°, preferably between 45° and 65°, the posterior support elements associated with two middle strap elements are arranged symmetrically around the sagittal plane at an angle from the sagittal plane in a region between 20° and 50°, preferably between 25° and 40°, and the posterior support elements associated with two inner strap elements are arranged symmetrically around the sagittal plane at an angle from the sagittal plane in a region between 0° and 30°, preferably between 5° and 15°.

[0045] Preferably, when using a total of four strap elements or more, posterior strap fixation / adjustment devices are arranged symmetrically around the sagittal plane at a distance in a region between 2 cm and 30 cm from the sagittal plane and at a radius from the central anterior point in a region between 20 cm and 48 cm.

[0046] Preferably, when using a total of six strap elements or more, posterior strap fixations / adjustment devices associated with the two outer strap elements are arranged symmetrically around the sagittal plane at a distance between 13 cm and 30 cm from the sagittal plane and at a radius from the central anterior point in a region between 25 cm and 47 cm, preferably between 30 cm and 40 cm, posterior strap fixations / adjustment devices associated with the two middle strap elements are arranged symmetrically around the sagittal plane at a distance between 7 cm and 18 cm from the sagittal plane and at a radius from the central anterior point in a region between 20 cm and 48 cm, preferably between 25 cm and 38 cm, and posterior strap fixations / adjustment devices associated with two inner strap elements are arranged symmetrically around the sagittal plane at a distance between 2 cm and 13 cm from the sagittal plane and at a radius from the central anterior point in a region between 25 cm and 48 cm, preferably between 30 cm and 45 cm.

[0047] Preferably, the seat comprises one or more strap adjustment devices for adjusting the configuration of an individual strap element or a set of strap elements.

[0048] Preferably, the one or more strap adjustment devices are configured for adjusting a length of the strap element or the set of strap elements prior to using the seat and / or when the user is seated.

[0049] Preferably, the strap adjustment device is a manual adjustment device, and / or a controlled adjustment device, such as an electronically or hydraulically or pneumatically controlled adjustment device.

[0050] Preferably, the strap adjustment device is configured for changing a length of the strap element. The length may be changed, e.g. by a buckle and / or roller. The strap adjustment device may be configured to modify the relative position of the one or more anterior support elements to the one or more posterior support elements. The one or more anterior support elements may be rotatable and / or preferably translatory movable relative to the one or more posterior support elements, or vice versa. Preferably, the one or more posterior support elements are fixedly connected to the seat, such as fixedly connected to a mounting section of the seat.

[0051] The posterior support element or main body can have a straight shape or a concave shape (e.g., a concave shape with a radius between 13 cm to 25 cm, preferably between 17 cm to 22 cm).

[0052] Preferably, the one or more posterior support elements include a convex body, preferably a cylindrical body, more preferably a cylindrical roller body. The convex body may be configured for providing additional support to the seated user, preferably in a pelvic region, more preferably around the femur, of the user.

[0053] The convex body may have a diameter between 3 cm to 15 cm, preferably between 5 cm to 10 cm.

[0054] Preferably, the one or more posterior support elements are pivotally connected to the seat, such as pivotally connected to a mounting base of the seat.

[0055] Preferably, the one or more posterior support elements include a main body and a hinge element coupling the main body to the seat or the mounting base of the seat.

[0056] Preferably, the hinge element includes a pivot axis, a first plane extends through the pivot axis and through a coupling position of the posterior end portion being coupled to the main body, the first plane and a second, horizontal plane confine an interior angle therebetween, the interior angle being the angle that is formed between the hinge element and the anterior support element, the hinge element is configured such that when the user is seated on the seat, the interior angle between the first plane and the second plane is at least 90°, more preferably at least 95°, more preferably at least 120°, more preferably at least 170°.

[0057] The seat may include an abutment member such that the interior angle is at least 90° when the user is seated on the seat. The abutment member may be provided in or on the main body, and / or in or on the hinge element, and / or in or on the mounting base of the seat.

[0058] Preferably, the at least two strap elements are coupled to a single anterior support element. For example, a single anterior support element may be used when the strap elements converge or join at the anterior side of the seating region.

[0059] Preferably, the single anterior support element is, or the one or more anterior support elements are, translatory movable and / or tiltable for adjusting a size of the seat. Preferably, the single anterior support element includes a connection body for connecting the strap elements, the connection body includes a top face and a side face, at least one strap element, preferably an inner strap element, is coupled to the top face, and at least one strap element, preferably an outer strap element, is coupled to the side face.

[0060] Preferably, the side face is arranged at an angle to the top face and the strap element extending from the posterior side to the anterior side is twisted towards the angled side face of the single anterior support element, preferably wherein twisting the strap element results in an increased seating area at the anterior side of the seating area, more preferably wherein twisting the strap element distributes pressure from the femur of the seated user at the anterior side of the seating area.

[0061] Preferably, the seat includes four strap elements, preferably six strap elements, coupled to the single anterior support element, wherein only the outer two strap elements of the set of four or six strap elements, respectively, are coupled to the side face of the mounting body.

[0062] Preferably, the strap elements are separate or distinctly separate elements.

[0063] Preferably, the strap elements are only connected at the anterior side of the seating region and / or are disconnected at the posterior side of the seating region.

[0064] Preferably, a plurality of strap elements may be connected by a fabric material, wherein the plurality of strap elements is formed by stiffer portions of the fabric material. Preferably, the seated user is mainly or substantially only supported by the strap elements, and / or the fabric material in-between the plurality of strap elements does not substantially support the seated user.

[0065] Preferably, the seat comprises one or more cushioning elements arranged on top of and / or extending along a respective one of the strap elements for providing cushioning to a seated user.

[0066] Preferably, the strap elements extend unsupported between the one or more anterior support elements and the one or more posterior support elements.

[0067] Preferably, the strap elements are allowed to sag, such as freely sag, between the one or more anterior support elements and the one or more posterior support elements.

[0068] Preferably, the strap elements are only supported by the one or more anterior support elements and the one or more posterior support elements and are substantially unsupported in-between. Preferably, the seating region is frameless in-between the one or more anterior and posterior support elements.

[0069] Preferably, the one or more posterior support elements, preferably all posterior support elements, have a concave shape. The concave shape may be an inward bending shape of the posterior support element. The concave shape may be on a side of the posterior support elements that is configured to face towards the user when seated. In other words, the side of the posterior support elements facing towards the user when seated may be referred to as an "inner" side. The inner side of the posterior support elements may be concave. Such concave shape may be beneficial for accommodating the buttocks of a seated user.

[0070] Preferably, the concave shape is in a longitudinal direction and / or a lateral direction of a main body and / or an inner surface of a respective posterior support element. In other words, the posterior support elements may have a concave shape in at least two directions, wherein they are concave in the longitudinal direction and the lateral direction of the main body and / or the inner surface of a respective posterior support element.

[0071] Preferably, the one or more anterior support elements have a convex shape. The convex shape may be an outwardly bending shape of the anterior support element. The convex shape may be on a side of the anterior support element that is configured to face towards the user when seated. In other words, the side of the anterior support element facing towards the user when seated may be referred to as an "inner" side. The inner side of the anterior support element may be convex.

[0072] Preferably no frame on right and / or left side. Preferably strap elements not connected to a frame on right and / or left side.

[0073] Preferably, the anterior support element and the posterior support elements are connected via a support (a mounting base and / or a mounting section) extending below the straps and / or below the user when seated, e.g. below the buttocks of the user. More preferably the anterior support element and the posterior support elements are connected via a support extending only below the straps and / or below the user when seated, e.g. below the buttocks of the user. In other words, the seat may be devoid of a frame extending around the strap elements to the right and / or left of the strap elements, and / or devoid of a frame extending around the strap elements to the right and / or left of the user's legs and / or buttocks.

[0074] According to a second aspect of the present invention a seat is provided that comprises: one or more anterior support elements; one or more posterior support elements; one or more strap elements coupled to the one or more anterior support elements at an anterior end portion of the strap element, and coupled to the one or more posterior support elements at a posterior end portion of the strap element, wherein the one or more strap elements are configured for conforming to a seating area of a seated user, preferably while excluding or bypassing or freeing or not supporting an area below the user's coccyx and / or sacrum.

[0075] The term "exclude" shall mean that, in a top view of the seat, the one or more strap elements do not overlap with the coccyx and / or sacrum.

[0076] Preferably, the one or more posterior support elements are arranged such that the area below the user's coccyx and / or sacrum is excluded by the one or more strap elements.

[0077] Preferably, the one or more posterior support elements extend around, preferably laterally around, the one of more anterior support elements.

[0078] Preferably, the one or more anterior support elements are shaped to prevent pressure on the sexual organs, and / or are shaped to allow for ventilation, such as ventilation of the seating region of the seated user.

[0079] Advantageous embodiments of the first aspect may be advantageous embodiments of the second aspect, and vice versa.

[0080] Brief description of the drawings

[0081] Figure 1 is a schematic illustration of an embodiment of a seat of the present invention.

[0082] Figure 2 is another schematic illustration of the seat of Figure 1.

[0083] Figure 3 is a schematic detailed view of the seat of Figure 1.

[0084] Figure 4 is schematic side view of a section of a seat according to the present invention.

[0085] Figure 5 is another schematic side view of a section of a seat according to the present invention.

[0086] Figure 6 is a sketched image of an example of a seat according to the present invention.

[0087] Figure 7 is a sketched image of another example of a seat according to the present invention.

[0088] Figure 8 is a schematic top view of the seat of Figure 7. Figure 9 is a sketched side view of the seat of Figure 7.

[0089] Figure 10 is a schematic side view of a section of the seat of Figure 7.

[0090] Figures 11A-F are schematic views of an example of a seat of the present invention supporting a seating region of a seated user.

[0091] Figures 12A-C are schematic views of another example of a seat of the present invention supporting a seating region of a seated user.

[0092] Figures 13A-D are schematic views of another example of a seat of the present invention supporting a seating region of a seated user.

[0093] Figures 14A-D are schematic views of another example of a seat of the present invention supporting a seating region of a seated user.

[0094] Figures 15A-F are schematic views of another example of a seat of the present invention supporting a seating region of a seated user.

[0095] Figure 16 is a schematic view of another example of a seat of the present invention in which distinct strap elements are formed within a fabric material.

[0096] Figure 17 is a schematic view of another example of a seat of the present invention, wherein strap elements of the seat are not shown for clarity reasons.

[0097] Detailed description

[0098] Within the figures, same components are referenced by the same reference numerals.

[0099] Figure 1 shows a schematic illustration of an embodiment of a seat 10. The seat 10 may be used for a seated region of a chair, such as an office chair, a bus chair, a stool or other seat devices.

[0100] The seat devices may be made from any suitable material including but not limited to: wood, plywood, metals (such as iron, steel, titanium allow, allows, etc.), polymers (such as polyamide, polyethylene, TPU, PU, TPFE -Teflon-, etc.), man-made fibers (such as nylon, polyester, polyamide, etc.), natural fibers (such as cotton, line, jute, etc.), material compounds (such as carbon fiber parts, glass fiber parts, wood and metal, wood and carbon fiber, wood and polymer, or combinations thereof. In the example shown, the seat 10 includes six strap elements 12 for providing a seating area of the seated user. The seating area extends between an anterior side 14 and a posterior side 16. The anterior side 14 is a front side of the seating area. The posterior side 16 is a rear or backside of the seating area. In other words, a front side of the seated user faces the anterior side 14 of the seating region, and a rear side of the seat user faces the posterior side 16 of the seating region.

[0101] In the example of Figure 1 the seat 10 includes six strap elements 12. This number shall only be exemplary. In other embodiments not shown, the seat 10 may include another number of strap elements 12, in particular a whole-numbered multiple of two strap elements 12, such as at least two strap elements 12, at least four strap elements 12, at least six strap elements 12 (as shown in Figure 1), at least eight strap elements 12, or more.

[0102] The strap elements 12 are arranged symmetrically around the seating area, or symmetrically around a middle plane of the seating area as indicated in Figure 2 by reference numeral 26 so as to provide equal support for a left and a right side of the seated user. The strap elements 12 are arranged such that a buttock of a seated user may be supported equally on a left and right side.

[0103] The seat 10 further includes posterior support elements 18. In the example shown, the seat 10 includes six posterior support elements 18. A posterior end portion of each strap element 12 is configured to be coupled to one or more posterior support elements 18. The posterior support elements 18 are configured for supporting the strap elements 12 at the posterior side 16 of the seating region. In the example shown, each strap element 12 is supported by a respective posterior support element 18. In other examples not shown, multiple strap elements 12, or a set of strap elements 12 may be supported by one or more posterior support elements 18.

[0104] The strap elements 12 extend between the posterior side 16 of the seating area and the anterior side 14 of the seating area.

[0105] One or more anterior support elements 20 are provided in the seat 10 for coupling to an anterior end portion of each strap elements 12. The one or more anterior support elements 20 are configured for supporting the strap elements 12 at the anterior side 14 of the seating area. In the example shown, all six strap elements 12 are supported by a single anterior support element 20. In other examples not shown, each strap element 12 or a set of strap elements 12 may be associated with one or more anterior support elements 20, each anterior support element 20 being configured for supporting the respective strap element 12 or the respective set of strap elements 12.

[0106] The strap elements 12 are arranged such that the strap elements 12 run towards one another in a direction from the posterior side 16 to the anterior side 14 of the seating area. In other words, the strap element 12 are arranged to fan-out or span-out in a direction towards the posterior side 16 of the seating area. In yet other words, the strap elements 12 are arranged such that at the posterior side 16 of the seating area the strap elements 12 are placed further apart from one another than at the anterior side 14 of the seating area. In yet other words, the seating area converges at the anterior side 14.

[0107] In the example of Figure 1, the strap elements 12 converge and join at the anterior side 14 of the seating region. All six strap elements 12 are coupled to a single anterior support element 20. In other embodiments this may not be the case.

[0108] The shape of the seat 10 resembles a saddle-like shape allowing for a comfortable sitting on the seating area. The seat 10 is designed to allow the seated user to move over a wide range of ways. The seated user can move the legs anterior, posterior and / or laterally during seating.

[0109] Compared to a conventional saddle, however, the strap elements 12 are only supported at their respective anterior and posterior end portions and are substantially unsupported in-between the anterior and posterior end portions. In other words, the strap element 12 extend unsupported between the one or more posterior support elements 18 and the one or more anterior support elements 20. In yet other words, the strap element 12 are allowed to sag, preferably sag freely, between anterior and posterior support elements 20, 18, respectively. In yet other words, the seating area is frameless between the anterior support element 20 and the posterior support elements 18. The seated user may freely move sideways and / or let his or her leg hang downwards, the movement not being impaired by any frame extending between the anterior and posterior side of the seating area. In other words, the seated user may move freely similar to sitting on a saddle. The strap elements 12 are allowed to conform to the seating region of the seated user and may reduce pressure on sections of the seating region preventing discomfort of the seated user. The strap elements 12 may allow for ventilation, for example in the seating region of the seated user, such as in the sexual organ region.

[0110] The strap elements 12 are flexible and / or non-rigid elements. The strap elements 12 may be made of a variety of materials, such as fabric, textile, belt, woven fabric, webbing fabric, reinforced and / or stiffened fabric material, and / or man-made fibers (such as nylon, polyester, polyamide, etc.), natural fibers (such as cotton, line, wool, etc.).

[0111] The strap elements 12 may include stretchable and / or non-stretchable sections or regions. The strap elements 12 may have a stretchability measured in a width and / or longitudinal direction of the strap element 12 of maximal 20%, preferably maximal 10%, more preferably maximal 2%. The stretchability in width direction may be the same or may be different from the stretchability in the longitudinal direction. The strap elements 12 may be band or belt elements. A width of the strap elements 12 is larger than a thickness of the strap elements 12. The length may be measured in longitudinal direction along the strap element 12 between the anterior and posterior side 14, 16 of the seating area. The width may be measured perpendicular to the length and may be measured along a seating face of the strap element 12.

[0112] The width of the strap element 12 may be shorter than a length of the strap element 12 by a factor of greater than 1, preferably at least 40. Examples of widths are at least 2 cm, at least 5 cm, at least 7 cm, at least 12 cm. The lengths may depend on the number of strap elements 12 and / or on whether the posterior support elements 18 are movable / rotatable or not. More examples on lengths are provided later on in connection with Figure 8.

[0113] In the example of Figure 1, the width of the strap elements 12 is shown to be uniform. In other examples not shown, the width may vary. For example, the strap element 12 may have a trapezoidal shape or a tailored shape or a combination thereof.

[0114] A thickness of the strap element 12 may preferably be less than 0.5 cm, more preferably 0.2 cm or less, even more preferably 0.1 cm or less. If the strap element 12 includes cushioning, the thickness may be different. For example, a thickness of a strap element 12 including cushioning may be 5 cm or less, preferably 3 cm or less, more preferably 1 cm or less, such as 0.5 cm or less (depending on the thickness of the strap element 12 itself).

[0115] The strap elements 12 are arranged to support a femoral, and / or pelvic, and / or sit bone, and / or pubic seating region of the seated user. Exemplary positions of the strap elements 12 are shown in more detail with respect to Figures 11 to 15.

[0116] The strap elements 12 and the posterior support elements 18 are shaped such that in total at least 30%, preferably at least 60%, more preferably at least 90% of a femoral seating area of the seated user can be supported.

[0117] The one or more posterior support elements 18 may be arranged such that an area below the seated user's coccyx and / or sacrum is excluded by the strap elements 12.

[0118] Additionally or alternatively, the one or more anterior support element 20 may be shaped such that a pressure on the sexual organs is reduced or prevented, and / or such that ventilation of the seating area is possible. As already mentioned, in the example of Figure 1 a seat 10 with a single anterior support element 20 is shown.

[0119] As can be seen further in Figure 1, the single anterior support element 20 includes a connection body having a top face 22 and two side faces 24 extending at an angle of 90° to the top face 22. As can be seen in the example, the inner four strap elements 12 are coupled to the top face 22 and the two outer strap elements are coupled to the side faces 24 of the anterior support element 20. As a result, the outer two strap elements 12 are twisted towards the angled side faces 24. The strap elements 12 may be twisted such that the twisting results in an increased seating area at the anterior side 14 of the seating area. The twisting may further be such that twisted strap elements 12 are configured for distributing the pressure from the femur of the seated user to the anterior side of the seating area. This may further increase comfort of the seated user, particularly during longer sitting periods.

[0120] A width of the anterior support element 20 may be in a range between 3 cm and 16 cm, preferably between 5 cm and 12 cm.

[0121] Referring to Figure 2, another schematic illustration of the seat 10 of Figure 1 is shown.

[0122] As can be seen, the six strap elements 12 are arranged around a middle or sagittal plane 26 of the seating region. The strap elements 12 are arranged such that a first set of strap elements 12A is arranged to support a sit bone region of the seated user. A second set of strap elements 12B is arranged to support a femoral seating region of the seated user. A third set of strap elements 12C is arranged to support a seating region between the sit bone region and the inner side region. As can be seen, the set of strap elements 12B supporting the femoral seating region is arranged laterally from the set of strap elements 12A that support the sit bone region. The term "laterally" is to be understood in anatomical terms. In other words, the set of strap elements 12A supporting the sit bone region of the seated user are arranged at a more medial position than the set of strap elements 12B supporting the femoral seating region.

[0123] A longitudinal length of the strap element 12 may depend on its position around the sagittal plane 26. The longitudinal length may further depend on whether the posterior support elements 18 are movable or fixed. If the posterior support elements 18 are fixed, the longitudinal lengths of the strap elements 12 may be approximately the same or with a different of some centimeter, such as, e.g. 5 cm, between them. The lateral strap elements 12 may be shorter or equal in length compared to the medial strap elements 12. If the posterior support elements 18 are movable or rotatable, the longitudinal lengths of the strap elements 12 may be different between the sit bone region and the femoral seating region. The longitudinal length of the strap elements 12 on or around the femoral seating region may be longer compared to the that or those supporting the sit bone region. Longitudinal lengths of strap elements 12 supporting the femoral seating region may be in the range of 30 cm to 45 cm. Longitudinal lengths of strap elements 12 supporting the sit bone region (such as ischial tuberosity and part of inferior public ramus) may be in the range of 25 cm to 40 cm. Longitudinal lengths of strap elements 12 supporting the pelvic seating region and / or pelvic floor may be in the region of 30 cm to 45 cm.

[0124] Referring to Figure 3, a schematic detailed view of the seat 10 of Figure 1 is shown. Figure 3 shows the twisting of the outer strap element 12 in more detail.

[0125] As can be seen, in the specific example of Figure 3, the strap element 12 is coupled at its posterior end portion to the posterior support element 18. The anterior end portion of the strap element 12 is coupled to the side face 24 of the anterior support element 20. In the specific example, the strap element 12 is twisted by about 90° from a substantially horizontal orientation at the posterior end portion to a substantially vertical orientation at the anterior end portion. The twisting may result in an increased seating area at the anterior side of the seating area and may distribute the pressure from the femur of the seated user. The twisting may be adapted to the seated user. The twisting may be adjusted or adjustable, for example, by changing the shape of the anterior support element 20.

[0126] Referring to Figure 4, a schematic side view of a section of the seat 10 of Figure 1 is shown.

[0127] Figure 4 illustrates a section of a strap element 12 coupled at its anterior end portion to an anterior support element 20. The anterior support element 20 may be the single anterior support element 20 explained in connection with Figures 1 to 3 or may be a different anterior support element.

[0128] As can be seen in Figure 4, at an anterior strap fixation 28 of the strap element 12, the strap element 12 forms an angle 30 with an imaginary plane 32 that extends through the anterior support element 20 and extends parallel to a second, horizontal plane 34 which may be parallel to a mounting base 36 of the seat 10 or floor. The strap element 12 may span over an angle 30 at the anterior strap fixation 28 of maximal 45°, preferably maximal 30°, more preferably maximal 10°.

[0129] Angle 30 may be measured in a plane that describes the deformation of the strap element. The plane may be a plane parallel to the middle or sagittal plane 26 shown in Figure 2.

[0130] The skilled reader will understand that the schematic shown in Figure 4 is for illustration purposes only. Hence, no actual or real value for angle 30 may be deduced from Figure 4.

[0131] Referring to Figure 5, a schematic side view similar to that of Figure 4 is shown. Figure 5 illustrates a section of a strap element 12 coupled at its posterior end portion to a posterior support element 18. The posterior support element 18 may be one of the posterior support elements 18 explained in connection with Figures 1 to 3 or may be a different posterior support element.

[0132] As can be seen in Figure 5, at a posterior strap fixation / adjustment device 38 of the strap element 12, the strap element 12 forms an angle 40 with the imaginary plane 42 that extends through the posterior support element 18 and that extends parallel to the second, horizontal plane 34 which may be parallel to the mounting base 36. Imaginary plane 42 of Figure 5 and imaginary plane 32 of Figure 4 may be the same plane or may be different planes. Strap elements 12 may span over an angle 40 at the posterior strap fixation / adjustment device 38 of at least 30°, preferably at least 60°, more preferably at least 85°.

[0133] Angle 40 may be measured in a plane that describes the deformation of the strap element. The plane may be a plane parallel to the middle or sagittal plane 26 shown in Figure 2. Angle 40 may be measured in a plane extending along the length of the strap element (at least in the posterior region) and through the center of the strap element 12. The plane may be perpendicular to the strap element's width direction in the posterior region) and / or generally vertical in space.

[0134] The skilled reader will understand that the schematic shown in Figure 5 is for illustration purposes only. Hence, no actual or real value for angle 40 may be deduced from Figure 5.

[0135] Referring to Figure 6, a sketched image of an example of seat 10 is shown.

[0136] In the example of Figure 6, the posterior support elements 18 are fixedly connected to the seat 10, for example, to a mounting section 44 of the seat 10.

[0137] In the specific example shown, the posterior support elements 18 include a convex body 46 such as a cylindrical body or a cylindrical roller body. The convex body 46 is configured for providing additional support to the seated user. For example, the convex body 46 may support a sacral-pelvic region, preferably round the femur of the seated user. The strap element 12 may extend at least partially over the convex body 46, but not necessarily.

[0138] The convex body 46 may have a diameter between 3 cm to 15 cm, preferably between 5 cm to 10 cm.

[0139] In other embodiments not shown, the posterior support elements 18 may be fixed without the convex body 46. Thus, the convex body 46 may be omitted and the posterior support elements 18 may be fixed or fixedly connected to the seat 10 in a different way. The seat 10 of Figure 6 further includes a strap adjustment device 48. The strap adjustment device 48 is configured for adjusting a configuration of an individual strap element 12 or a set of strap elements 12. The strap adjustment device 48 may be configured for adjusting a length of the strap element 12 or the set of strap elements 12, such as prior to using the seat 10 and / or when the user is seated. The strap adjustment device 48 may be a manual adjustment device, and / or a controlled adjustment device, such as an electronically or hydraulically or pneumatically controlled adjustment device. A length of the strap element(s) 12 may be changed, e.g. by a buckle and / or a roller. Alternatively or additionally, while not specifically shown in Fig. 6. the length of the strap element(s) 12 may be changed by changing the position (e.g., inclination) of the anterior support element 20.

[0140] The seat 10 of Figure 6 includes a total of four strap elements 12, two twisted outer strap elements and two straight strap elements. In other examples not shown, the number of strap elements 12 may be different, such as 2, 6, 8 or another whole-numbered multiple of 2 strap elements 12.

[0141] Referring to Figure 7, a sketched image of another example of seat 10 is shown.

[0142] In the example of Figure 7, the posterior support elements 18 are tiltable or pivotable. The tilting or pivoting will be explained in more detail in Figures 9 and 10.

[0143] The seat 10 of Figure 7 includes six strap elements 12 connected to the posterior strap fixation / adjustment device 38 of a respective posterior support element 18 and connected to a single anterior support element 20 at the anterior end portion.

[0144] In other embodiments not shown, a different number of strap elements 12 and / or support elements 18, 20 may be used.

[0145] Figure 7 also shows the middle plane or sagittal plane 26.

[0146] Referring to Figure 8, a schematic top view of the seat of Figure 7 is shown.

[0147] As can be seen, the posterior support elements 18 are arranged symmetrically around the sagittal plane 26. The sagittal plane 26 may include one or more central anterior points 49 which may be a central point of the single anterior support element 20.

[0148] As can be seen, the posterior support elements 18 are arranged at different angles 50, 52, 54 from the sagittal plane 26. The posterior strap fixations / adjustment devices 38 are arranged at different distances 55, 57, 59 from the sagittal plane 26 and / or at different radii 56, 58, 60 from the central anterior point or points 49. In other words, the strap elements 12 may extend from the point(s) 49 at different rotational angles around the point(s) (e.g., when taking the sagittal plane 26 as 0°).

[0149] In embodiments in which the seat 10 includes a total of six strap elements 12, the posterior support elements 18 associated with the two outer strap elements 12 may be arranged symmetrically around the sagittal plane 26 at an angle 50 from the sagittal plane 26 in a region between 40° and 85°, preferably between 45° and 65°, the posterior support elements 18 associated with the two middle strap elements 12 may be arranged symmetrically around the sagittal plane 26 at an angle 52 in a region between 20° and 50°, preferably between 25° and 40°, and the posterior support elements 18 associated with the two inner strap elements 12 may be arranged symmetrically around the sagittal plane 26 at an angle 54 from the sagittal plane 26 in a region between 0° and 30°, preferably between 5° and 15°. The skilled person will understand, however, that the arrangement is not necessarily symmetric.

[0150] In embodiments with four strap elements 12, the posterior support elements 18 associated with the two outer strap elements 12 may be arranged symmetrically around the sagittal plane 26 at an angle from the sagittal plane 26 in a region between 30° and 85° and the posterior support elements 18 associated with the two inner strap elements 12 may be arranged symmetrically around the sagittal plane 26 at an angle from the sagittal plane 26 in a region between 5° and 50°. The skilled person will understand, however, that the arrangement is not necessarily symmetric.

[0151] In other embodiments, the angles from the sagittal plane 26 may be different, and / or may vary, and / or may depend on the number of strap elements 12 used in the seat 10.

[0152] As can be further seen, in embodiments in which the seat 10 includes a total of six strap elements 12, the posterior strap fixations / adjustment devices 38 associated with the two outer strap elements 12 may be arranged symmetrically around the sagittal plane 26 at a distance 55 between 13 cm and 30 cm from the sagittal plane 26 and at a radius 56 from the central anterior point 49 in a region between 25 cm and 47 cm, preferably between 30 cm and 40 cm, the posterior strap fixations / adjustment devices 38 associated with the two middle strap elements 12 may be arranged symmetrically around the sagittal plane 26 at a distance 57 between 7 cm and 18 cm from the sagittal plane 26 and at a radius 58 from the central anterior point 49 in a region between 20 cm and 48 cm, preferably between 25 cm and 38 cm, and the posterior strap fixations / adjustment devices 38 associated with the two inner strap elements 12 may be arranged symmetrically around the sagittal plane 26 at a distance 59 between 2 cm and 13 cm from the sagittal plane 26 and at a radius 60 from the central anterior point 49 in a region between 25 cm and 48 cm, preferably between 30 cm and 45 cm. In embodiments with four strap elements 12, the posterior strap fixations / adjustment devices 38 may be arranged symmetrically around the sagittal plane 26 at a distance between 2 cm and 30 cm from the sagittal plane 26 and at a radius from the central anterior point 49 in a region between 20 cm and 48 cm

[0153] In other embodiments, the radii or distances may be different, and / or may vary, and / or may depend on the number of strap elements 12 used in the seat 10.

[0154] Various combinations of angles 50, 52, 54 and distances 55, 56, 57, 58, 59, 60 may be possible. The skilled reader will understand that the schematic shown in Figure 8 is for illustration purposes only. Hence, no actual or real values for angles 50, 52, 54 and distances 55, 56, 57, 58, 59, 60 may be deduced from Figure 8. Also, the skilled person will understand, however, that the arrangement is not necessarily symmetric.

[0155] Referring to Figure 9, a sketched side view of the seat 10 of Figure 7 is shown.

[0156] The seat 10 includes one or more tiltable posterior support elements 18. The posterior support elements 18 are pivotally connected to the mounting base 36 of the seat 10. The posterior support elements 18 include a main body 62 and a hinge element 64 coupling the main body 62 to the mounting base 36. In the seat 10 of Figure 9, the anterior support element 20 is also movable and / or tiltable for adjusting a size of the seat 10.

[0157] Referring to Figure 10, a schematic side view of a section of the seat 10 of Figure 7 is shown.

[0158] Figure 10 illustrates a section of a strap element 12 coupled at its posterior end portion to the posterior strap fixation / adjustment device 38 of the tiltable posterior support element 18 shown in Figure 9. A pivot axis 66 of the hinge element 64 is indicated schematically in Figure 10. A first plane 68 extends through the pivot axis 66 and through a coupling position 69 of the posterior end portion being coupled to the main body 62 (see Figure 9) of the posterior support element 18.

[0159] The posterior support element 18 or main body 62 may have a straight shape or a concave shape (e.g., with a radius between 13 cm to 25 cm, preferably between 17 cm to 22 cm).

[0160] Figure 10 illustrates a second, horizontal plane 70 which may be parallel to the floor. The second, horizontal plane 70 may be the same plane as plane 34 mentioned in Figures 4 and 5. The first plane 68 and the second plane 70 confine an interior angle 72 therebetween, the interior angle 72 being the angle that is formed between the hinge element 64 and the anterior support element on the anterior side of the seating area. The hinge element 64 is configured such that when the user is seated on the seat 10, the interior angle 72 between the first plane 68 and the second plane 70 preferably is at least 90°, more preferably at least 95°, more preferably at least 120°, more preferably at least 170°.

[0161] The seat 10 may include an abutment member such that the interior angle 72 is at least 90° when the user is seated on the seat 10. The abutment member may be provided in or on the posterior support element 18, in or on the hinge element 64, in or on the mounting base of the seat 10, or a combination thereof.

[0162] The skilled reader will understand that the schematic shown in Figure 10 is for illustration purposes only. Hence, no actual or real value for angle 72 may be deduced from Figure 10.

[0163] In a further embodiment, the posterior support elements 18 may be connected to the seat 10, such as connected to a mounting base 36 of the seat 10. The posterior support elements 18 may include a bendable such as flexibly bendable main body 62 connected to the mounting base 36 of the seat 10, preferably in a fixed and / or non-movable manner (alternatively the bendable main body 62 may be pivotably connected), at a fixation 67. The bendable main body 62 may be configured to be deformed by forces on the strap elements 12 when the user is seated on the strap elements 12. A first plane or line 68 may extend through the fixation 67 and through a coupling position 69 of the posterior end portion being coupled to the main body 62. The first plane or line 68 and a second, horizontal plane 70 may confine an interior angle 72 therebetween, the interior angle 72 being the angle that is formed between the fixation 67 and the anterior support element on the anterior side of the seating area.

[0164] Also in this case, the posterior support element 18 or main body 62 may have a straight shape or a concave shape (e.g., with a radius between 13 cm to 25 cm, preferably between 17 cm to 22 cm).

[0165] The fixation 67 and / or the bendable main body 62 may be configured such that when the user is seated on the seat, the interior angle 72 between the first plane 68 and the second plane 70 is at least 170°, more preferably at least 120°, more preferably at least 100°, more preferably at least 90°.

[0166] Referring to Figures 11A-F, various views of another example of a seat 10 according to the present invention are shown highlighting sections of the bony skeletal of a seated user that may be supported by the seat 10. In the example of Figures 11A-F, the seat 10 includes four strap elements 12 coupled to a single anterior support element 20. No twisting occurs to the strap elements 12.

[0167] Figure 11A is a bottom view with the legs of the seated user being spread. Figure 11B is a bottom view with the legs of the seated user in a normal or straight position. Figure 11C is a bottom view with the left leg being spread to the side and front, and the right leg being bent to behind. Figure 11D is a front view with the legs of the seated user being spread. Figure HE is a side view with the legs of the seated user in the normal or straight position. Figure 11F is a side view with the left leg being spread to the side and the right leg bent to behind.

[0168] Referring to Figures 12A-C, various views of another example of a seat 10 according to the present invention are shown highlighting sections of the bony skeletal of a seated user that may be supported by the seat 10. In the example of Figures 12A-C, the seat 10 includes four strap elements 12 coupled to a single anterior support element 20. The outer strap elements 12 are twisted at the anterior end portion.

[0169] Figure 12A is a bottom view with the legs of the seated user being spread. Figure 12B is a bottom view with the legs of the seated user in the normal or straight position. Figure 12C is a side view with the legs of the seated user in the normal or straight position.

[0170] Referring to Figures 13A-D, various views of another example of a seat 10 according to the present invention are shown highlighting sections of the bony skeletal of a seated user that may be supported by the seat 10. In the example of Figures 13A-D, the seat 10 includes six strap elements 12 coupled to a single anterior support element 20. No twisting occurs to the strap elements 12.

[0171] Figure 13A is a bottom view with the legs of the seated user in the normal or straight position. Figure 13B is a front view with the legs of the seated user being spread. Figure 13C is a side view with the legs of the seated user in the normal or straight position. Figure 13D is another side view with the left leg being spread.

[0172] Referring to Figures 14A-D, various views of another example of a seat 10 according to the present invention are shown highlighting sections of the bony skeletal of a seated user that may be supported by the seat 10. In the example of Figures 14A-D, the seat 10 includes six strap elements 12 coupled to a single anterior support element 20. Some strap elements 12 are twisted at the anterior end portion.

[0173] Figure 14A is a bottom view with the legs of the seated user being spread. Figure 14B is a bottom view with the legs of the seated user in a normal or straight position. Figure 14C is a side view with the legs of the seated user in the normal or straight position. Figure 14D is another side view with the left leg being spread.

[0174] Referring to Figures 15A-F, various views of another example of a seat 10 according to the present invention are highlighting sections of the bony skeletal of a seated user that may be supported by the seat 10. In the example of Figures 15A-F, the seat 10 includes two or more strap elements 12 coupled to a single anterior support element 20. The strap elements 12 are connected by a fabric material. If desired, distinct strap elements may be formed within the fabric material, e.g. via elongated portions of the fabric material having a higher E-modulus or lower elongation at break. In other words, stiffer portions may be formed within the fabric material, thereby functioning as strap elements 12 in accordance with previous examples discussed above. However, the fabric material could also have a uniform stiffness.

[0175] Figure 15A is a bottom view with the legs of the seated user being spread. Figure 15B is a bottom view with the legs of the seated user in a normal or straight position. Figure 15C is a bottom view with the left leg being spread to the side and the right leg being bent to behind. Figure 15D is a front view with the legs of the seated user being spread. Figure 15E is a side view with the legs of the seated user in the normal or straight position. Figure 15F is a side view with the left leg being spread to the side.

[0176] Referring to Figure 16, another example of a seat 10 according to the present invention is shown. In example of Figure 16, distinct strap elements 12 are formed within a fabric material. The strap elements 12 may be formed as elongated portions of the fabric material and / or may have a higher E-modulus or lower elongation at break. The distinct strap elements 12 may be stiffer than the rest of the fabric material. The stiffer portions may be formed within the fabric material and may function as strap elements 12 in accordance with the other embodiments previously discussed.

[0177] With reference to Figures 11 through 16, another embodiment of seat 10 in accordance with the present invention involves varying the number, shape, and size of strap elements 12 between the left and right sides of seat 10. For instance, one configuration may combine the two strap elements 12 on the left side as illustrated in Figure 11 with the single strap element 12 on the right side illustrated in Figure 15. Additional configurations for seat 10 can be created by using different combinations of strap elements shown in Figures 11 through 16.

[0178] Referring to Figure 17, another example of a seat 10 according to the present invention is shown. For clarity reasons, the strap elements of the seat 10 are not shown in Figure 17.

[0179] Figure 17 shows only one section of the seat 10, for illustrating purposes. The section shown in Figure 17 may be one half of the actual seat 10. In the example shown, the seat 10 includes one anterior support element 20 and two posterior support elements 18. The actual seat 10 may have one anterior support element 20 and four posterior support elements 18. In other embodiments more or less than 4 posterior support elements 18 may be present. Preferably, a whole-numbered amount of posterior support elements 18 may be present.

[0180] In the example of Figure 17, the posterior support element 18 and / or the main body 62 of the posterior support element 18 has a concave shape. The posterior support element 18 and / or the main body 62 may have a concave shape in a longitudinal direction of the posterior support element 18 and / or the main body 62, the longitudinal direction being a direction extending between a first end of the posterior support element 18 and / or the main body 62 that is connected to the mounting base 36 and a second end that is connected to a respective strap element (not shown for clarity reasons). Alternatively or additionally, the posterior support element 18 and / or the main body 62 may have a concave shape in a lateral direction, the lateral direction being a direction perpendicular to the longitudinal direction, such as a direction extending between sides of the main body 62 or the posterior support element 18. In the example shown in Figure 17, the main body 62 and / or the posterior support element 18 has a concave shape both in the longitudinal direction and the lateral direction.

[0181] The concave shape may generally be such that the posterior support element 18 bends inwardly or in a direction towards the anterior support element 20. In other words, when viewed from outside of the seat 10, the posterior support element or elements 18 may bulge outwards.

[0182] A generally concave shape of the posterior support element(s) 18 allows for the posterior support element(s) 18 to be arranged or positioned closer to the seated region (buttock) of the seated user.

[0183] In the example of Figure 17, all posterior support elements 18 are shown to have a generally concave shape. In other embodiments not shown, only a group of posterior support elements 18 may have a generally concave shape.

[0184] In the example of Figure 17, the posterior support elements 18 are coupled to the mounting base 36 by the hinge elements 64. The hinge elements 64 allow for a pivot movement of the posterior support elements 18, as already explained in connection with Figures 9 and 10. In other embodiments not shown, the posterior support elements 18 may be fixedly connected to the mounting base 36.

[0185] In the example of Figure 17, the anterior support element 20 has a generally convex shape. The generally convex shape may be such that the anterior support element 20 bends towards the outside. The convex shape may provide further stability and comfort for the seated user.

[0186] The anterior and / or posterior support elements 18, 20 may be made from any suitable material, such as but not limited to a metal material, e.g., stainless steel.

[0187] The anterior and / or posterior support elements 18, 20 may be movable and / or adjustable to fit to different sizes of the seated user, preferably to different hip sizes of the seated user.

[0188] The strap elements (not shown in Figure 17) may be fixated and / or coupled to the elements 18, 20 by any suitable means, such as but not limited to riveting. The skilled reader will understand that Figures 1-17 are for illustration purposes only.

[0189] The following aspects are preferred embodiments of the invention:

[0190] 1. A seat (10) comprising:

[0191] - at least two strap elements (12) for providing a seating area for a seated user, the seating area extending between an anterior side (14) and a posterior side (16),

[0192] - one or more anterior support elements (20), an anterior end portion of each strap element (12) being coupled to the one or more anterior support elements (20), the one or more anterior support elements (20) supporting the strap elements (12) at the anterior side (14) of the seating area, and

[0193] - one or more, preferably a plurality of, posterior support elements (18), a posterior end portion of each strap element (12) being coupled to the one or more posterior support elements (18), the one or more posterior support elements (18) supporting the strap elements (12) at the posterior side (16) of the seating area, preferably a posterior end portion of at least a first strap element (12) being coupled to at least a first one of the posterior support elements (18) and a posterior end portion of at least a second strap element (12) being coupled to at least a second one of the posterior support elements (18), - wherein the strap elements (12) extend between the anterior side (14) and the posterior side (16), and

[0194] - wherein the strap elements (12) run towards one another in a direction from the posterior side (16) to the anterior side (14).

[0195] 2. The seat (10) of aspect 1, wherein the strap elements (12) converge, preferably join, at the anterior side (14) of the seating area.

[0196] 3. The seat (10) of aspects 1 or 2, wherein the strap elements (12) are configured for conforming to a seating region of the seated user, preferably wherein the strap elements (12) are non-rigid elements and / or flexible elements.

[0197] 4. The seat (10) of any one of the preceding aspects, wherein the strap elements (12) are band elements and / or belt elements, preferably wherein a width of the strap elements (12) is larger than a thickness of the strap elements (12), preferably larger by a factor of greater than 1, more preferably at least 40. 5. The seat (10) of any one of the preceding aspects, wherein the strap elements (12) include stretchable and / or non-stretchable sections or regions, preferably wherein the strap elements (12) include a stretchability measured in a width direction and / or longitudinal direction of the strap element of maximum 20%, preferably maximum 10%, more preferably maximum 2%.

[0198] 6. The seat (10) of any one of the preceding aspects, wherein the strap elements (12) and / or the strap elements (12) together with the posterior support elements (18) are arranged to support a femoral, and / or sit bone and / or pelvic, and / or pubic seating region of the seated user.

[0199] 7. The seat (10) of any one of the preceding aspects, wherein the strap elements (12) and / or the strap elements (12) together with the posterior support elements (18) are arranged to support at least 30%, preferably at least 60%, more preferably at least 90% of a femoral seating area of the seated user.

[0200] 8. The seat (10) of any one of the preceding aspects, wherein, at the posterior side (16) of the seating area, the strap elements (12) span over an angle (40) measured from a parallel plane (42) to a mounting base (36) or the floor of the seat (10) ata posterior strap fixation / adjustment device (38) of at least 30°, preferably at least 60°, more preferably at least 85°.

[0201] 9. The seat (10) of any one of the preceding aspects, wherein, at the anterior side (14) of the seating area, the strap elements (12) span over an angle (30) measured from a parallel plane (32) to a mounting base (36) or the floor of the seat (10) at an anterior strap fixation (28) of maximal 45°, preferably maximal 30°, more preferably maximal 10°.

[0202] 10. The seat (10) of any one of the preceding aspects, wherein the seat (10) includes at least four strap elements (12), preferably at least six strap elements (12), more preferably at least eight strap elements (12), and / or a whole-numbered multiple of two strap elements (12).

[0203] 11. The seat (10) of aspect 10, wherein a first set of strap elements (12A), preferably two strap elements (12) or a whole-numbered multiple of two strap elements (12), is arranged to support a sit bone region of the seated user, and a second set of strap elements (12B), preferably two strap elements (12) or a whole-numbered multiple of two strap elements (12), is arranged to support a femoral seating region of the seated user, and preferably wherein a third set of strap elements (12C), preferably two strap elements (12) or a whole-numbered multiple of two strap elements (12), is arranged to support a seating region between the sit bone region and an inner side seating region of the seated user. 12. The seat (10) of aspect 11, wherein the strap elements (12) that support the femoral seating region are arranged laterally from the strap elements (12) that support the sit bone region.

[0204] 13. The seat (10) of any one of aspects 10 to 12, wherein the strap elements (12) or sets of strap elements (12)

[0205] - are arranged symmetrical with respect to a middle plane or sagittal plane (26) of the seating area, and / or

[0206] - provide equal support for a left and right side of the seated user, and / or

[0207] - are arranged symmetrically around a coccyx region of the seated user, and / or

[0208] - are arranged symmetrically around a buttock of the seated user.

[0209] 14. The seat (10) of any one of aspects 10 to 13, wherein inner strap elements (12) or a set of inner strap elements (12) have a different length compared to outer strap elements (12) or a set of outer strap elements (12), respectively.

[0210] 15. The seat (10) of any one of the preceding aspects, wherein the posterior support elements (18) are arranged around a sagittal plane (26), the sagittal plane (26) including a central anterior point (49), preferably wherein the posterior support elements (18) are arranged at different angles (50, 52, 54) from the sagittal plane (26), and / or at different radii (56, 58, 60) from the central anterior point (49).

[0211] 16. The seat (10) of aspect 15, wherein

[0212] - when using a total of four strap elements (12), the posterior support elements (18) associated with the two outer strap elements (18) are arranged symmetrically around the sagittal plane (26) at an angle from the sagittal plane (26) in a region between 30° and 85°, and the posterior support elements (18) associated with the two inner strap elements (12) are arranged symmetrically around the sagittal plane (26) at an angle from the sagittal plane (26) in a region between 5° and 50°, or

[0213] - when using a total of six strap elements (12), the posterior support elements (18) associated with two outer strap elements (12) are arranged symmetrically around the sagittal plane (26) at an angle (50) from the sagittal plane (26) in a region between 40° and 85°, preferably between 45° and 65°, the posterior support elements (18) associated with two middle strap elements (12) are arranged symmetrically around the sagittal plane (26) at an angle (52) from the sagittal plane (26) in a region between 20° and 50°, preferably between 25° and 40°, and the posterior support elements (18) associated with two inner strap elements (18) are arranged symmetrically around the sagittal plane (26) at an angle (54) from the sagittal plane (26) in a region between 0° and 30°, preferably between 5° and 15°.

[0214] The seat (10) of aspects 15 or 16, wherein

[0215] - when using a total of four strap elements (12), the posterior strap fixations / adjustment devices (38) are arranged symmetrically around the sagittal plane (26) at a distance between 2 cm and 30 cm from the sagittal plane (26) and at a radius from the central anterior point (49) in a region between 20 cm and 48 cm, or

[0216] - when using a total of six strap elements (129, the posterior strap fixations / adjustment devices (38) associated with the two outer strap elements (12) are arranged symmetrically around the sagittal plane (26) at a distance (55) between 13 cm and 30 cm from the sagittal plane (26) and at a radius (56) from the central anterior point (49) in a region between 25 cm and 47 cm, preferably between 30 cm and 40 cm, the posterior strap fixations / adjustment devices (38) associated with the two middle strap elements (12) are arranged symmetrically around the sagittal plane (26) at a distance (57) between 7 cm and 18 cm from the sagittal plane (26) and at a radius (58) from the central anterior point (49) in a region between 20 cm and 48 cm, preferably between 25 cm and 38 cm, and the posterior strap fixations / adjustment devices (38) associated with the two inner strap elements (12) are arranged symmetrically around the sagittal plane (26) at a distance (59) between 2 cm and 13 cm from the sagittal plane (26) and at a radius (60) from the central anterior point (49) in a region between 25 cm and 48 cm, preferably between 30 cm and 45 cm.

[0217] The seat (10) of any one of the preceding aspects, wherein the seat (10) further comprises: - one or more strap adjustment devices (38, 48) for adjusting a configuration of an individual strap element (12) or a set of strap elements (12), preferably wherein the one or more strap adjustment devices (38, 48) are configured for adjusting a length of the strap element (12) or the set of strap elements (12) prior to using the seat (10) and / or when the user is seated.

[0218] The seat (10) of aspect 18, wherein the strap adjustment device and / or devices (38, 48) is / are manual adjustment device, and / or a controlled adjustment device, such as an electronically or hydraulically or pneumatically controlled adjustment device.

[0219] The seat (10) of aspects 18 or 19, wherein the strap adjustment device and / or devices (38, 48) is / are configured for changing a length of the strap element (12). 21. The seat (10) of any one of the preceding aspects, wherein the posterior support elements (18) are fixedly connected to the seat (10), such as fixedly connected to a mounting section (44) of the seat (10).

[0220] 22. The seat (10) of any one of the preceding aspects, preferably of aspect 21, wherein the posterior support elements (18) include a convex body (46), preferably a cylindrical body, more preferably a cylindrical roller body, wherein the convex body (46) is configured for providing additional support to the seated user, preferably in a sacral-pelvic region, more preferably around the femur, of the user.

[0221] 23. The seat (10) of any one of aspects 1 to 20, wherein the posterior support elements (18) are pivotally connected to the seat (10), such as pivotally connected to a mounting base (36) of the seat (10).

[0222] 24. The seat (10) of aspect 23, wherein the posterior support elements (18) include a main body (62) and a hinge element (64) coupling the main body (62) to the seat (10) or the mounting base (36) of the seat (10).

[0223] 25. The seat (10) of aspect 24, wherein

[0224] - the hinge element (64) includes a pivot axis (66),

[0225] - a first plane (68) extends through the pivot axis (66) and through a coupling position (69) of the posterior end portion being coupled to the main body (62),

[0226] - the first plane (68) and a second, horizontal plane (70) confine an interior angle (72) therebetween, the interior angle (72) being the angle that is formed between the hinge element (64) and the anterior support element (20), and

[0227] - the hinge element (64) is configured such that when the user is seated on the seat, the interior angle (72) between the first plane (68) and the second plane (70) is at least 90°, more preferably at least 95°, more preferably at least 120°, more preferably at least 170°.

[0228] 26. The seat (10) of any one of preceding aspects, wherein the posterior support elements (18) are connected to the seat (10), such as connected to a mounting base (36) of the seat (10), preferably wherein the posterior support elements (18) include a bendable such as flexibly bendable main body (62) connected to the mounting base (36) of the seat (10), preferably in a fixed and / or non-movable manner, at a fixation (67), preferably wherein

[0229] - the bendable main body (62) is configured to be deformed by forces on the strap elements (12) by a seated user, - a first plane or line (68) extends through the fixation (67) and through a coupling position (69) of the posterior end portion being coupled to the main body (62),

[0230] - the first plane or line (68) and a second, horizontal plane (70) confine an interior angle (72) therebetween, the interior angle (72) being the angle that is formed between the fixation (67) and the anterior support element (20), and

[0231] - the fixation (67) and / or the bendable main body (62) is configured such that when the user is seated on the seat, the interior angle (72) between the first plane (68) and the second plane (70) is at least 170°, more preferably at least 120°, more preferably at least 100°, more preferably at least 90°.

[0232] 27. The seat (10) of any one of the preceding aspects, wherein the strap elements (12) are coupled to a single anterior support element (20).

[0233] 28. The seat (10) of aspect 27, wherein the single anterior support element (20) is translatory movable and / or tiltable for adjusting a size of the seat (10).

[0234] 29. The seat (10) of aspects 27 or 28, wherein

[0235] - the single anterior support element (20) includes a connection body for connecting the strap elements (12),

[0236] - the connection body includes a top face (22) and a side face (24),

[0237] - at least one strap element (12), preferably an inner strap element (12), is coupled to the top face (22), and

[0238] - at least one strap element (12), preferably an outer strap element (12), is coupled to the side face (24).

[0239] 30. The seat (10) of aspect 29, wherein the side face (24) is arranged at an angle to the top face (22) and the strap element (12) extending from the posterior side (16) to the anterior side (14) is twisted towards the angled side face (24) of the anterior support element (20), preferably wherein twisting the strap element (12) results in an increased seating area at the anterior side (14) of the seating area, more preferably wherein twisting the strap element (12) distributes pressure from the femur of the seated user at the anterior side (12) of the seating area.

[0240] 31. The seat (10) of aspects 29 or 30, wherein the seat (10) includes four strap elements (12), preferably six strap elements (12), coupled to the single anterior support element (20), and wherein only the outer two strap elements (12) of the set of four or six strap elements (12), respectively, are coupled to the side face (24) of the mounting body. The seat (10) of any one of the preceding aspects, wherein the strap elements (12) are separate elements, preferably wherein the strap elements (12) are only connected at the anterior side (14) of the seating region and / or are disconnected at the posterior side (16) of the seating region.

[0241] The seat (10) of any one of aspects 1 to 32, wherein a plurality of the strap elements (12) is connected by fabric material, wherein the plurality of strap elements (12) is formed by stiffer portions of the fabric material, preferably wherein

[0242] - the seated user is mainly or substantially only supported by the strap elements (12), and / or - the seated user is supported by the strap elements (12) and the posterior support elements (18), and / or

[0243] - the fabric material in-between the plurality of strap elements (12) does not substantially support the seated user.

[0244] The seat (10) of any one of the preceding aspects, wherein the seat (10) further comprises: - one or more cushioning elements arranged on top of and / or extending along a respective one of the strap elements for providing cushioning to a seated user.

[0245] The seat (10) of any one of the preceding aspects, wherein

[0246] - the strap elements (12) extend unsupported between the one or more anterior support elements (20) and the one or more posterior support elements (18), and / or

[0247] - the strap elements (12) are allowed to sag between the one or more anterior support elements (20) and the one or more posterior support elements (18), and / or

[0248] - the strap elements (12) are only supported by the one or more anterior support elements (20) and the one or more posterior support elements (18) and are substantially unsupported in-between.

[0249] A seat (10), comprising:

[0250] - one or more anterior support elements (20),

[0251] - one or more posterior support elements (18),

[0252] - one or more strap elements (12) coupled to the one or more anterior support elements (20) at an anterior end portion of the strap element (12), and coupled to the one or more posterior support elements (18) at a posterior end portion of the strap element (12), wherein the one or more strap elements (12) are configured for conforming to a seating area of a seated user while excluding an area below the user's coccyx and / or sacrum.

[0253] 37. The seat (10) of aspect 36, wherein the posterior support elements (18) are arranged such that the area below the user's coccyx and / or sacrum is excluded by the one or more strap elements (12).

[0254] 38. The seat (10) of aspects 36 or 37, wherein the one or more posterior support elements (18) extend around the one of more anterior support elements (20).

[0255] 39. The seat (10) of any one of aspects 36 to 38, wherein the anterior support element(s) (20) are shaped to prevent pressure on the sexual organs, and / or are shaped to allow for ventilation of the seating region.

Claims

CLAIMS1. A seat (10) comprising:- at least two strap elements (12) for providing a seating area for a seated user, the seating area extending between an anterior side (14) and a posterior side (16),- one or more anterior support elements (20), an anterior end portion of each strap element (12) being coupled to the one or more anterior support elements (20), the one or more anterior support elements (20) supporting the strap elements (12) at the anterior side (14) of the seating area, and- a plurality of posterior support elements (18), a posterior end portion of at least a first strap element (12) being coupled to at least a first one of the posterior support elements (18) and a posterior end portion of at least a second strap element (12) being coupled to at least a second one of the posterior support elements (18), the posterior support elements (18) supporting the strap elements (12) at the posterior side (16) of the seating area, - wherein the strap elements (12) extend between the anterior side (14) and the posterior side (16), and- wherein the strap elements (12) run towards one another in a direction from the posterior side (16) to the anterior side (14).

2. The seat (10) of claim 1, wherein at least two of the at least two strap elements (12) are disconnected from one another at the posterior side (16) of the seating area.

3. The seat (10) of claims 1 or 2, wherein at least two of the posterior support elements (18) are disconnected, such as mechanically disconnected, from each other.

4. The seat (10) of claims 1, 2 or 3, wherein at least a first one of the posterior support elements (18) is configured to move independently of at least a second one of the posterior support elements (18).

5. The seat (10) of any one of the preceding claims, wherein the strap elements (12) converge at the anterior side (14) of the seating area.

6. The seat (10) of any one of the preceding claims, wherein the seating area converges at the anterior side (14).

7. The seat (10) of any one of the preceding claims, wherein the seating area is frameless between the one or more anterior support elements (20) and the posterior support elements (18).

8. The seat (10) of any one of the preceding claims, wherein the strap elements (12) are configured for conforming to a seating region of the seated user, wherein the strap elements (12) are flexible elements.

9. The seat (10) of any one of the preceding claims, wherein the strap elements (12) and / or the strap elements (12) together with the posterior support elements (18) are arranged to support a pubic seating region of the seated user.

10. The seat (10) of any one of the preceding claims, wherein the seat (10) includes a whole- numbered multiple of two strap elements (12).

11. The seat (10) of claim 10, wherein a first set of strap elements (12A) is arranged to support a sit bone region of the seated user, a second set of strap elements (12B) is arranged to support a femoral seating region of the seated user, and a third set of strap elements (12C) is arranged to support a seating region between the sit bone region and an inner side seating region of the seated user.

12. The seat (10) of claims 10 or 11, wherein the strap elements (12) or sets of strap elements (12) are arranged symmetrical with respect to a middle plane or sagittal plane (26) of the seating area.

13. The seat (10) of any one of claims 10 to 12, wherein inner strap elements (12) or a set of inner strap elements (12) have a different length compared to outer strap elements (12) or a set of outer strap elements (12), respectively.

14. The seat (10) of any one of the preceding claims, wherein the posterior support elements (18) are arranged around a sagittal plane (26), the sagittal plane (26) including a central anterior point (49), wherein the posterior support elements (18) are arranged at different angles (50, 52, 54) from the sagittal plane (26), and / or wherein posterior strap fixations / adjustment devices (38) are arranged at different distances (55, 57, 59) from the sagittal plane (26) and / or at different radii (56, 58, 60) from the central anterior point (49).

15. The seat (10) of any one of the preceding claims, wherein the seat (10) further comprises:- one or more strap adjustment devices (38, 48) for adjusting a configuration of an individual strap element (12) or a set of strap elements (12), preferably wherein the one or more strapadjustment devices (38, 48) are configured for adjusting a length of the strap element (12) or the set of strap elements (12) prior to using the seat (10) and / or when the user is seated.

16. The seat (10) of any one of the preceding claims, wherein the posterior support elements (18) are fixedly connected to the seat (10), wherein the posterior support elements (18) include a convex body (46), wherein the convex body (46) is configured for providing additional support to the seated user.

17. The seat (10) of any one of claims 1 to 15, whereinthe posterior support elements (18) are pivotally connected to the seat (10), wherein the posterior support elements (18) include a main body (62) and a hinge element (64) coupling the main body (62) to the seat (10)and / orthe posterior support elements (18) are connected to the seat (10), wherein the posterior support elements (18) include a flexibly bendable main body (62) connected to the seat (10) at a fixation (67).

18. The seat (10) of any one of the preceding claims, wherein the strap elements (12) are coupled to a single anterior support element (20), wherein the single anterior support element (20) is translatory movable and / or tiltable for adjusting a size of the seat (10).

19. The seat (10) of any one of the preceding claims, wherein- the strap elements (12) are separate elements, wherein the strap elements (12) are only connected at the anterior side (14) of the seating region and / or wherein all strap elements (12) are disconnected at the posterior side (16) of the seating region.

20. The seat (10) of any one of the preceding claims, wherein a plurality of the strap elements (12) is connected by fabric material, wherein the plurality of strap elements (12) is formed by stiffer portions of the fabric material, and wherein the seated user is mainly or substantially only supported by the strap elements (12).

21. The seat (10) of any one of the preceding claims, wherein the seated user is supported by the strap elements (12) and the posterior support elements (18).

22. The seat (10) of any one of the preceding claims, wherein the strap elements (12) extend unsupported between the one or more anterior support elements (20) and the posterior support elements (18).

23. The seat (10) of any one of the preceding claims, wherein the strap elements (12) are allowed to sag freely between the one or more anterior support elements (20) and the posterior support elements (18).

24. The seat (20) of any one of the preceding claims, wherein the posterior support elements (18) have a concave shape.

25. The seat (10) of claim 24, wherein the posterior support elements (18) have a concave shape in a longitudinal direction and / or a lateral direction of a main body (62) of a respective posterior support element (18).

26. The seat (10) of any one of the preceding claims, wherein the anterior support element (20) has a convex shape.

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