Abrégé

A pneumatically adjustable bladder system (90) for use in a cushioned seat bottom (24) has one or two rear foam filled bladders (62, 64) for location under the ischial tuberosities of a seated occupant of the seat bottom, and one or more expansion chambers (14, 16) or front foam filled bladders (66, 68) for location under the thighs of the seated occupant. There are air passageways (70, 72, 74, 92) interconnecting the bladders with each other or with an expansion chamber. The system is air tight and the bladders are compressible under the weight of the seated occupant and are expandable when the weight is removed. The compression of a bladder causes air therewith in to be displaced through the air passageways to the expansion chambers or to the other bladders, which then expand. The compression of a bladder under the ischial tuberosities of the seated occupant and the expansion of the expansion chambers or of the other bladders under the thighs of the seated occupant cause the seated occupant to experience a correct level of immersion into the cushioned seat bottom which is desired for effective postural support and prevention of lower back pain.

Classes IPC  ?

• A47C 7/02 - Parties du siège
• A47C 27/08 - Matelas à fluide
• A47C 27/18 - Matelas à ressort, rembourrés ou à fluide spécialement adaptés pour chaises, fauteuils, lits ou canapés garnis d'un matériau mousse combiné à des corps gonflables

Abrégé

A pneumatically adjustable bladder system (90) for use in a cushioned seat bottom (24) has one or two rear foam filled bladders (62, 64) for location under the ischial tuberosities of a seated occupant of the seat bottom, and one or more expansion chambers (14, 16) or front foam filled bladders (66, 68) for location under the thighs of the seated occupant. There are air passageways (70, 72, 74, 92) interconnecting the bladders with each other or with an expansion chamber. The system is air tight and the bladders are compressible under the weight of the seated occupant and are expandable when the weight is removed. The compression of a bladder causes air therewith in to be displaced through the air passageways to the expansion chambers or to the other bladders, which then expand. The compression of a bladder under the ischial tuberosities of the seated occupant and the expansion of the expansion chambers or of the other bladders under the thighs of the seated occupant cause the seated occupant to experience a correct level of immersion into the cushioned seat bottom which is desired for effective postural support and prevention of lower back pain.

Classes IPC  ?

• A47C 7/02 - Parties du siège
• A47C 27/18 - Matelas à ressort, rembourrés ou à fluide spécialement adaptés pour chaises, fauteuils, lits ou canapés garnis d'un matériau mousse combiné à des corps gonflables
• A47C 27/08 - Matelas à fluide

Abrégé

A pneumatic seat cushion system (10) has a deformable cushion (11) having a seating surface (12) and a self inflating cushion bladder (14) positioned beneath the seating surface (12). The self inflating cushion bladder (14) has an airtight envelope (15) containing compressible material (16) which is in air communication (19) with a displacement bladder (18) such that when in use the airtight envelope (15) and the displacement bladder (18) form a closed system from which no air can enter or escape. When there is no person seated on the seating surface (12), the self inflating cushion bladder (14) is inflated and the displacement bladder (18) is deflated. When there is a person seated on the seating surface, the weight of the person compresses the compressible material (16) so as to partially deflate the self inflating cushion bladder (14) which results in the contained air passing into the displacement bladder (18) which becomes fully inflated.

Classes IPC  ?

• A47C 27/18 - Matelas à ressort, rembourrés ou à fluide spécialement adaptés pour chaises, fauteuils, lits ou canapés garnis d'un matériau mousse combiné à des corps gonflables

Abrégé

A pneumatic seat cushion system (10) has a deformable cushion (11) having a seating surface (12) and a self inflating cushion bladder (14) positioned beneath the seating surface (12). The self inflating cushion bladder (14) has an airtight envelope (15) containing compressible material (16) which is in air communication (19) with a displacement bladder (18) such that when in use the airtight envelope (15) and the displacement bladder (18) form a closed system from which no air can enter or escape. When there is no person seated on the seating surface (12), the self inflating cushion bladder (14) is inflated and the displacement bladder (18) is deflated. When there is a person seated on the seating surface, the weight of the person compresses the compressible material (16) so as to partially deflate the self inflating cushion bladder (14) which results in the contained air passing into the displacement bladder (18) which becomes fully inflated.

Classes IPC  ?

• A47C 27/18 - Matelas à ressort, rembourrés ou à fluide spécialement adaptés pour chaises, fauteuils, lits ou canapés garnis d'un matériau mousse combiné à des corps gonflables

Abrégé

An automatic pneumatic valve (10) for use in a pneumatic cushion incorporating a self inflating airtight bladder containing compressible material is disclosed herein. The automatic pneumatic valve (10) has a valve base (11) having a passageway (13) therethrough, a valve seat (14) around the passageway (13), and a resilient seal (16) in the valve seat (14). The automatic pneumatic valve (10) also has a valve pressure pad (12) overlying the valve base (11) having a valve member (20) adapted to engage the resilient seal (16), wherein the valve pressure pad (12) is biased away from the valve base (11) by compressible foam member (100). When there is pressure applied to the valve pressure pad (12) the valve member (20) and resilient seal (16) come into contact with each other and seal the valve (10). When the pressure is removed from the valve pressure pad (12), the valve pressure pad (12) returns to its biased position which opens the valve (10) by lifting the valve member (20) away from the resilient seal (16) in the valve seat (14).

Classes IPC  ?

• A47C 27/08 - Matelas à fluide
• A47C 27/10 - Matelas à fluide avec plusieurs compartiments remplissables séparément
• F16K 31/126 - Moyens de fonctionnementDispositifs de retour à la position de repos actionnés par un fluide le fluide agissant sur un diaphragme, un soufflet ou un organe similaire
• F16K 31/145 - Moyens de fonctionnementDispositifs de retour à la position de repos actionnés par un fluide montés sur soupapes à fonctionnement manuel ou conjugués avec celles-ci le fluide agissant sur un diaphragme
• F16K 31/165 - Moyens de fonctionnementDispositifs de retour à la position de repos actionnés par un fluide et avec un mécanisme autre qu'une tige va-et-vient, entre le moteur à fluide et l'élément de fermeture le fluide agissant sur un diaphragme

Abrégé

A chair or seat comprising seat back (11) and seat bottom (10) is provided with one or more self inflatable devices (12) inserted therein. Each inflatable device comprises a flexible, open celled foam filled bladder connected to a control valve (13), and optionally, a bleed valve (27). Control and bleed valves can either be incorporated into the seat back or seat bottom or they can be provided in a remote panel (30) for operating the degree of inflation of the self inflatable devices. The control valves and bleed valves may be manually valves, or they may be electric valves incorporating solenoids. Electric valves can be used in combination with vehicle's electrical and central locking systems to provide for the automatic reinflation and preservation of personal settings.

Classes IPC  ?

• A47C 31/12 - Moyens pour adapter les sièges, les lits ou les matelas à la conformation ou au poids de l'utilisateur, p. ex. moyens de prise de mesure
• A47C 7/18 - Parties du siège ayant un matériau mousse incorporé à la partie rembourrée
• A47C 7/02 - Parties du siège
• B60N 2/66 - Supports lombaires

Produits et services

(1) Self inflating devices and body support devices namely head rest cushions,neck cushions, seating cushions, wheelchair cusions, back supports, lumbar supports and mattresses; inflatable cushions and devices for therapeutic use, namely, head pillows, wheelchair pillows, neck pillows, bed pillows, bath pillows and seating pillows.