An adjustable back support assembly coupled to the back of a chair in which a user sits with his back spaced from the chair back. The adjustable back support assembly includes a back support that is pivotally connected to the back of the chair by a hinge. The back support is rotatable at the hinge away from the chair back and towards the back of the user to provide support thereto. The back support assembly also includes a gas cylinder having a retractable piston. The gas cylinder is connected between the back support of the adjustable back support assembly and an upstanding rigid chair backing within the back of the chair. When the retractable piston is forced outwardly from the gas cylinder, a linear pushing force is correspondingly generated by the piston to cause the back support to rotate away from the chair back and towards the back of the user.

Provide are a device for adjusting softness of a vehicle seat, a device for adjusting comfort of a seat, and a vehicle seat. The device for adjusting softness of a vehicle seat has at least one soft inflatable bag that can be integrated in the seat. The soft inflatable bag is connected with at least one air path. The soft inflatable bag is filled with a flexible filler. Gas is charged into or discharged from the soft inflatable bag through the air path to adjust the softness of the surface of the seat. The soft inflatable bag is provided therein with a height limiting structure configured to limit the partial expansion height of the soft inflatable bag when inflated.

To provide a seat adjustment device capable of flexibly changing a shape of a seat. A seat adjustment device for adjusting a shape of a seat includes a pad including an elastomer, and airbags disposed on a front surface and a rear surface of the pad. The airbags are adjustable in amount of air therein. The airbags include a first airbag disposed on one of the front and rear surfaces and of the pad, and a second airbag disposed on the other. The first airbag is longer than the second airbag in a direction substantially perpendicular to the front and rear surfaces of the pad. The second airbag is longer than the first airbag in a direction substantially parallel to the front and rear surfaces of the pad.

A device provides a pneumatic pressure medium via a pressure medium source for at least one pressure medium chamber in particular of a vehicle seat of a motor vehicle. The device has a pressure medium source for the pressure medium and a pressure medium line disposed between the pressure medium source and at least one valve. At least one connection for a pressure medium line is disposed between the valve and the pressure medium chamber. A control module actuates the pressure medium source and the at least one valve. The device further has a housing. A motor of the pressure medium source is located between the control module and a pump of the pressure medium source.

An inflatable portable lumbar pillow is an apparatus that includes a plurality of inflatable cushions connected serially via a plurality of intermediate webs, a first end strap opposite to a second end strap that retains a strap fastener, and a strap fastener that utilizes a first interlocking portion and a second interlocking portion to wrap around a wearer's waist. The first end strap is connected adjacent to the plurality of inflatable cushions. The second end strap is connected adjacent to the plurality of inflatable cushions, opposite the first end strap. The first interlocking portion connects onto the first end strap, offset from the plurality of inflatable cushions, and the second interlocking portion connects onto the second end strap, offset from the plurality of inflatable cushions, thereby securing the first end strap to the second end strap.

A lumbar traction device for treating a lower back of a user includes a shell that is coupled to and extends from a rear edge of a panel. The shell and the panel are configured to position on a seat and in abutment a backrest of a chair, respectively. A coupling means that extends through a front of the shell is coupled to a plate positioned in the shell. The coupling means is configured to couple to a torso of the user to couple the user to the plate. An actuator, which is positioned in the shell and operationally coupled to the plate, is positioned to selectively raise the plate relative to the seat of the chair. The coupling means is configured to transmit an upward force from the actuator to the torso of the user to place a lumbar region of a spine of the user in traction.

A seat assembly includes a cushioned component having a lattice matrix, wherein the lattice matrix includes a first portion defined by a first pattern of interconnected links which defines a first set of cells, and a second portion defined by a second pattern of interconnected links which defines a second set of cells. The first portion of the lattice matrix includes a density profile that is different than a density profile of the second portion of the lattice matrix. An air bladder is disposed within a core portion of the lattice matrix and includes a non-porous outer casing surrounding an interior cavity. The outer casing of the air bladder and the lattice matrix are integrated components comprised of a common material to define a monolithic structure created using an additive manufacturing process.

Provide are a device for adjusting softness of a vehicle seat, a device for adjusting comfort of a seat, and a vehicle seat. The device for adjusting softness of a vehicle seat has at least one soft inflatable bag that can be integrated in the seat. The soft inflatable bag is connected with at least one air path. The soft inflatable bag is filled with a flexible filler. Gas is charged into or discharged from the soft inflatable bag through the air path to adjust the softness of the surface of the seat. The soft inflatable bag is provided therein with a height limiting structure configured to limit the partial expansion height of the soft inflatable bag when inflated.

An air cushion device for a seat includes at least one first air cushion and a second air cushion, first and second air inlets, first and second air ducts, and a device preventing the second air duct from being pinched off by a fixing wire of a seat cover.

A portable seat and back cushion for posture correction. The device includes a seat member with an inflatable bladder or a foam insert and a back member that is foldably connected to the seat member. A customizable support member is disposed within the back member. The customizable support member may include either an inflatable bladder with a plurality of individually adjustable bubbles arranged in a vertical row or a semi-rigid insert with a plurality of selectively positionable vertebral support nodules.