A cushion for supporting a user relative to a support surface is provided. The cushion has material with sufficient flexibility to deform under a weight of the user and sufficient resilience to return to its original state when the weight is removed. A supporting face contacts the support surface an
A cushion for supporting a user relative to a support surface is provided. The cushion has material with sufficient flexibility to deform under a weight of the user and sufficient resilience to return to its original state when the weight is removed. A supporting face contacts the support surface and is characterized by a plurality of points. The supporting face is contoured such that, when the cushion is in an unloaded configuration, a first subset of the plurality of points contact the support surface and a second subset of the plurality of points do not contact the support surface. When a user then sits on the cushion so that it is in a loaded configuration, at least some of the points in the second subset are displaced under the user's weight and contact the support surface. The cushion thus both bends and compresses to distribute the weight of the user.
대표청구항▼
1. A seat cushion for supporting at least a portion of a user relative to a support surface, the cushion comprising: material with sufficient flexibility for the cushion to deform from an unloaded configuration toward a loaded configuration as a weight of the user is placed on the cushion, and with
1. A seat cushion for supporting at least a portion of a user relative to a support surface, the cushion comprising: material with sufficient flexibility for the cushion to deform from an unloaded configuration toward a loaded configuration as a weight of the user is placed on the cushion, and with sufficient resilience for the cushion to return toward an unloaded configuration as the weight of the user is removed from the cushion, and with sufficient stiffness that the cushion deforms predominantly by bending as a load is applied;a body;a sitting face on a top side of the body, the sitting face configured to contact portions of the body of the user when supported by the cushion and comprising a contour configured to match a generic anatomical shape of a seated user and configured to aid in positioning the seated user in a therapeutically optimal position; anda supporting face on an under side of the body and characterized by a plurality of points, the supporting face contoured such that when the cushion is in the unloaded configuration a first subset of the plurality of points contact the support surface and a second subset of the plurality of points do not contact the support surface, and when the cushion is in the loaded configuration at least some of the points in the second subset contact the support surface, the second subset of the plurality of points further being positioned below the contour of the sitting face such that pelvic retrusion of the seated user is mitigated. 2. The seat cushion of claim 1, wherein the supporting face further comprises a plurality of pillars, each pillar having a top end connected to the body of the cushion and a bottom end corresponding to one of the plurality of points, wherein the pillars corresponding to the second subset are shorter than the pillars corresponding to the first subset. 3. The seat cushion of claim 2, wherein the pillars corresponding to the second subset are shortest underneath an area of the cushion for receiving ischial tuberosities of the user and increase in height as pillar placement on the supporting face moves away from an area of the cushion for receiving ischial tuberosities of the user. 4. The seat cushion of claim 1, wherein the cushion body, sitting face, and supporting face are made of one piece by injection molding. 5. The seat cushion of claim 1, wherein the material is single density, closed-cell foam. 6. The seat cushion of claim 1, wherein the contour further comprises a recessed area configured to receive a pelvis and coccyx of the user. 7. The seat cushion of claim 1, wherein the contour further comprises elevated components to support and orient thighs and hips of the user. 8. The seat cushion of claim 2, wherein the supporting face further comprises troughs in a bottom of a body of the seat cushion between pillars on the supporting face such that surface tension on the supporting face is decreased to lower a magnitude of a force needed for bending or compressing the cushion near the troughs. 9. The seat cushion of claim 8, wherein the troughs are rounded. 10. The seat cushion of claim 8, wherein the troughs are positioned in a row and column pattern. 11. The seat cushion of claim 8, wherein the troughs are positioned only in locations of maximum surface tension. 12. The seat cushion of claim 8, wherein the troughs extend over the entirety of the supporting face. 13. The seat cushion of claim 2, wherein the cushion further comprises ports, the ports providing openings extending through the seating face, the body, and the supporting face. 14. The seat cushion of claim 1, wherein the sitting face further comprises a plurality of nubs protruding from the sitting face.
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