The disclosure relates to the field of seat design and manufacture, in particular to a lumbar support seat. The disclosure is achieved by the following technical solution: a lumbar support seat, comprising a lumbar support and a gas spring; the lumbar support closely fits with the back of human body through the expansion of the gas spring when the back is moved, to provide continuous and uniform uplift force. An object of the disclosure is to overcome defects of the prior art and provide a lumbar support seat. When the user moves on the seat back and forth, the lumbar support may move synchronously in contact with the back of the human body, to fit with the waist in real time, thereby increasing the supporting force in waist position of the human body.

A lumbar support system for a seat backrest, the lumbar support system includes a carrier having a first end and a second end opposite the first end. The carrier is movable with respect to the seat backrest in a first direction and in a second direction opposite the first direction. The lumbar support system further includes a first bladder coupled to the first end of the carrier, a second bladder coupled to the second end of the carrier, and a third bladder coupled to the carrier. The third bladder has a contact surface and is configured to move with the carrier. The first bladder is inflatable to move the carrier in the first direction, and the second bladder is inflatable to move the carrier in the second direction. The third bladder is inflatable such that the contact surface is extendable in a third direction.

A work environment adjustment system includes multiple instances of controllable office equipment located within an office space, each instance associated with a specific office location and including an activator for controlling states of the instance, at least one presence sensor for detecting user presence within each space associated with each instance, and a master controller linked to each office equipment activator to control activation of each activator to control a current state of each instance. The master controller is programmed to perform the steps of receiving sensor signals from the at least a first presence sensor, determining user presence at each space associated with each instance, controlling states at each of the instances independent of user input when the space associated with the instance is vacant, and enabling user control of the state of each instance associated with a space that is occupied by a user.

A vehicle seat for supporting an occupant in a vehicle. The vehicle seat includes a backrest and a headrest.

A vehicle seat for supporting an occupant in a vehicle. The vehicle seat includes a backrest and a headrest.

A pneumatic lounging system includes an inflatable support unit and an inflatable unit. The inflatable support unit includes an inward layer, an outward layer, and a support air nozzle. The inward layer and the outward layer define an air cavity, and the outward layer is attached to the inward layer. The support air nozzle is attached and adapted to provide direct fluid communication of air with the air cavity. The inflatable unit includes an inward wall, an outward wall, and an air nozzle. The inward wall and the outward wall define at least one air chamber, and the inward wall is attached to the outward layer. The air nozzle is adapted to provide direct fluid communication of air with one of the at least one air chamber. There is no fluid communication between the inflatable support unit and the first inflatable unit.

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 seat device includes a seat cushion where a sitting person is seated, and a seatback configured to support the upper body of the sitting person. The seatback includes a seatback frame, a seatback pad placed on a front face of the seatback frame, and a seatback cover covering a surface of the seatback pad. A plurality of stretch airbags is provided in a part of the seatback at a position corresponding to the lumbar part of the sitting person, and the stretch airbags are configured to inflate and press a surface of the seatback to a direction approaching the sitting person. The stretch airbags are placed to overlap each other in a thickness direction of the seatback such that the seatback pad is sandwiched between the stretch airbags.

A chair back assembly includes a frame assembly including a pair of slots extending through the frame assembly, a first location positioned between the pair of slots, and a pair of second locations located outward of an outer periphery of the frame assembly, and a vertically adjustable lumbar assembly configured to support a lumbar area of a seated user and including a central portion and a pair of end portions slidably engaging the central portion, the central portion located in the first location and the end portions located in the second locations, wherein the pair of end portion are slidably moveable within the slots between a first position and a second position that is different than the first position.

An inflatable lumbar support cushion for seats including a seat cushion assembly connected with an air bladder that has a hollow body and is covered by a lumbar support that is hollow. The air bladder is inflated by a pump unit assembly which includes a pump unit that blows air to the air bladder by an air hose adapting the size of the lumbar support as required and defining a lumbar support portion which provides comfort to a user. The air bladder configured as a cushion for a sofa. The pump unit can be electronic or manual. The seat cushion can be adapted to different seats by an attaching base located to a bottom surface thereof and the lumbar support may be attached to a backrest by a strap allowing to fasten the inflatable lumbar support cushion to any suitable seat.