Pelvic and sacral bladder assembly
First Claim
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1. A seat assembly comprising:
- a seat bottom;
a seat back mounted adjacent the seat bottom and extending generally in an upright direction; and
three air bladders arranged in a lateral array and positioned in the pelvic region of the seat back, the three air bladders each having a support surface defined by an enlarged width portion at a first distal end extending to a tapered portion at a second distal end, such that the tapered portion that is more narrow than the enlarged width portion,wherein a central bladder is oriented so that the tapered portion of the central bladder is opposite the taper portion of two side bladders in the upright direction.
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Abstract
An air bladder assembly for a seat comprising is provided. A central sacral bladder has a support surface defined by an enlarged width portion connected to an elongated tapered portion, wherein the tapered portion is defined by elongated lateral sides. A pair of side iliac bladders is provided so that one of the side bladders is positioned adjacent each of the elongated sides of the central bladder. A support surface of the central air bladder is not parallel to a support surface of the side air bladders when the air bladder assembly is inflated.
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Citations
17 Claims
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1. A seat assembly comprising:
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a seat bottom; a seat back mounted adjacent the seat bottom and extending generally in an upright direction; and three air bladders arranged in a lateral array and positioned in the pelvic region of the seat back, the three air bladders each having a support surface defined by an enlarged width portion at a first distal end extending to a tapered portion at a second distal end, such that the tapered portion that is more narrow than the enlarged width portion, wherein a central bladder is oriented so that the tapered portion of the central bladder is opposite the taper portion of two side bladders in the upright direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An air bladder assembly for a seat comprising:
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a central bladder having a central support surface defined by an enlarged width portion connected to an elongated tapered portion, wherein the tapered portion is defined by elongated lateral sides; and a pair of side iliac bladders wherein one of the side bladders is positioned adjacent each of the elongated sides of the central bladder, wherein inflation of the central bladder inclines the central support surface from the tapered portion to the enlarged width portion relative to a seating surface of a seat back, wherein the pair of side bladders inflate so that a side support surface of each of the side bladders is generally parallel to the seating surface of the seat back such that the central support surface of the central bladder is not parallel to a side support surface of the each of the pair of side bladders when the air bladder assembly is inflated. - View Dependent Claims (12, 13, 14)
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15. An air bladder assembly for a seat comprising:
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a central bladder having a central support surface defined by an enlarged width portion connected to an elongated tapered portion, wherein the tapered portion is defined by elongated lateral sides; and a pair of side iliac bladders wherein one of the side bladders is positioned adjacent each of the elongated sides of the central bladder, wherein inflation of the central bladder inclines the central support surface from the tapered portion to the enlarged width portion relative to a seating surface of a seat back, wherein the side bladders are positioned on opposite lateral sides of the central bladder; and wherein the central bladder and side bladders have a length in an upright direction being generally equal whereby distal ends of the central bladder and side bladders are aligned. - View Dependent Claims (16, 17)
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Specification