988 results about "Office chair" patented technology

A suspension seat assembly for an office chair is provided which has a support frame and a suspension fabric connected about its periphery to the frame. The fabric is first laid across the frame and then the peripheral edges of the suspension fabric are secured in place on the frame by over-molded trim. The suspension fabric may also be formed as a multi-layer composite comprising an aesthetic upper layer, a stretchable suspension layer and an optional cushion layer therebetween. The suspension layer is a fabric-type material which is preferably air permeable and resilient to support the weight of a chair occupant.

An office chair is provided having a back assembly which is configured to provide supplemental support to the back of a chair occupant in addition to the support provided by the primary support surface of the chair back. The chair back includes a lumbar support unit having a lumbar support pad wherein asymmetric support is provided to the left and right halves of the lumbar pad. As such, the asymmetric support loads are independently adjustable to more comfortably support a chair occupant. The chair back also includes a pelvic support pad which is disposed vertically adjacent to the lumbar support.

A fabric seat for a chair and a method and machine for manufacturing the fabric seat. The fabric seat comprises a seat frame that supports the outer circumference of a fabric material. The seat frame comprises grasping members that secure the fabric to the seat frame and retain the desired stretch in the fabric. The grasping members can be teeth. A cover is also provided, which is snapped onto the circumference of the seat frame, to trap the fabric and protect the user from the grasping members.

A modular arm rest system for a chair. The arm rest includes a connecting member that is installed into an interior cavity in the chair frame and is retained by a nose. A back is also provided with an arm rest hole that the connecting member can be installed through, thereby securing the back to the chair frame. The modular system includes a reclining chair and a four-legged stacker chair with arm rests and plugs so that the chairs can be reconfigured as desired by the user.

A backrest adjusting device for office chairs comprising: a seat portion having a seat cushion and a stand for supporting the seat cushion; a back having a frame, a back cushion fixed on the surface of the frame, a connecting member for connecting the bottom of the back to a rear side of the seat portion, a hollow containing space formed at the middle section of the back, an n-shaped member being disposed in the containing space and extended backward; and a first attaching device installed on the n-shaped member of the containing space, thereby achieving the adjustment of the three-dimensional space of position, longitudinal buffer and angular rotation. Moreover, the back further includes a support member disposed at the top of the back, and a second attaching device installed on the support member and having a structure identical to the first attaching device. Meanwhile, the first attaching device has an attaching body made in compliance with the shape of a human waist to form a backrest bump. Furthermore, the second attaching device has an attaching body made in compliance with the shape of a human head to form a headrest. In this way, the three-dimensional space such as position, height, longitudinal buffer and angular rotation of a backrest or a headrest is adjustable.

A portable therapeutic seat exercise apparatus and method that provide a lightweight personal exerciser designed for a person to use to improve physical status, and for the exercise, alignment, and stress reduction of a person's trunk, spine, abdomen, pelvis, and thighs. It encourages and enhances low back mobility in contrast to the static nature of regular sitting. It consists of a lightweight contoured seating surface supported by at least one arcuate hemispherical base that allows unrestricted motion in all directions, including twisting, tilting, and rocking. It can be placed on many seating surfaces including but not limited to sofas, dining chairs, school desk chairs, office chairs, factory benches, and motor vehicle seats. Its use facilitates low back muscular stabilization, conditioning, strengthening, coordination, and enhancement of proprioceptive senses. Interchangeable parts and add-on attachments can be used in differing combination to vary height, depth, position, and arc of the seat-supporting base.

An angle-adjusting apparatus for an office chair includes: a supporting body with an bottom end attached to one side of a seat body of the office chair, a receiving cavity being defined by the front side of the upper portion of the supporting body, a plurality of notches being continuously formed in the front wall of the supporting body; a hollow socket mounted on the supporting body and liftable thereon; a locking shank having a pivot pin disposed at the top thereof and a protrusion at the bottom thereof for fitting into one of the notches, a spring being interposed between the front side of the locking shank and the wall of the hollow socket for providing the locking shank with an elastic pushing force in direction of the notches, a holding portion passing through the through hole of the hollow socket being extended forward from the pivot pin of the locking shank; and an armrest body transversely disposed at the top of the hollow socket and movably connected to the hollow socket so as to perform the ascending and descending action thereof.

An office chair includes a seat and a backrest that are pivotally connected together at a pivot axis such that the backrest can pivot with respect to the seat between an upright position and a reclining position. The seat is mounted on a base such that the seat can move with respect to a base, and the seat includes front and rear portions that can pivot with respect to one another. When the backrest is pivoted from the upright position to the reclining position, both of the seat and the pivot axis move forward with respect to said base, and the seat front portion flexes with respect to the seat rear portion such that the angle between said upward faces of said seat front portion and the seat rear portion increases. The backrest may also include an upper portion and a lower portion that can pivot with respect to one another. When the backrest is moved to the recline position, the angle between the forward faces of the upper and lower backrest portions decreases.

A chair, in particular a work or office chair, having a seat mounted onto a chair frame. The front region of the seat can be inclined about a horizontal, pivoting shaft which is displaced upwards and downwards, following a spatial guide curve in relation to the chair frame. The seat is also connected in an articulated manner to a rocker which is directed upwards and extends backwards from an articulated rocker bearing fixed to the chair frame and which is connected at a distance from the rear edge of the seat, or at the side of said seat. The chair also includes a backrest which is attached to the section of the rocker that is directed upwards, the inclination of the backrest being disproportionately altered, in a forced manner, with the alteration of the inclination of the seat. This invention achieves an increased apex angle between the backrest and the seat, together with a uniform displacement because the backrest is coupled to the rocker by a coupling point and the seat is also coupled to the backrest by a control lever assembly, which is used to incline the backrest backwards in relation to the rocker, when the seat is inclined.

A seating furniture item, in particular an office chair, has a seat fastened on a seat support and a backrest fastened to a backrest support, the backrest support being articulatedly arranged on a base support and the backrest support and the seat support being articulatedly connected with each other via two levers, and in which one of the two levers is positively guided directly on the base support.

An office chair includes a base and a height adjustable seat mounted to the base and having a front end. The base includes a pair of centrally positioned, laterally spaced apart drive wheels that are manually operated by a user or which are motorized.

A chair mounted lumbar and trapezius support system that offers the support for an individual required to work leaning forward in an office style chair for a prolonged period of time. The device reduces the strain on the back by supporting the individual in the abdominal area of body. Adjustable elbow rests mount to the support belt structure to support the elbows and allow maximum movement of the arms while remaining in a fixed position with relation to the torso when a individual is leaning forward or twists to one side or the other doing delicate work. The support belt structure is either permanently or removably attachable to an office chair using fasteners, belts or a flexible support.

A height-adjusting assembly for an office chair backrest includes a supporting unit mounted with a vertically movable backrest. The supporting unit and the backrest have correspondingly an engaging element and a series of positioning teeth, respectively, to be coupled mutually. Upper and lower ends of the series of positioning teeth have a retracting portion and an expanding portion for retracting and expanding the engaging element, respectively. When the backrest slides upward, the engaging element successively engages with one of the positioning teeth so as to position the backrest at a desired height. When the backrest reaches to an upmost position, the engaging element is pressed by the retracting portion and retracts so as to separate from the positioning teeth. Then the backrest reaches a bottommost position thereof has the engaging element expanded by the expanding portion, thereby allowing the engaging element to engage with the positioning teeth again.

A chair, in particular an office chair, comprising: a base structure, a seat support structure, articulated to the base structure around a transverse axis, an adjustable elastic device to apply an elastic force between the base structure and the seat support structure, a manually operated adjustment device for varying the distance between said adjustable elastic device and said transverse axis.

An office chair system has an office chair with adjustment elements for changing positions of elements of the office chair, a sensor element, a calculation unit coupled to the latter and to the adjustment elements, as well as an operating element coupled thereto. The adjustment elements are configured to detect contacts and actuations of components of the adjustment elements and to generate an adjustment signal based thereon. The sensor element is configured to determine the positions of the elements and a posture of a user and to generate a position signal based thereon. The calculation unit is configured to generate a first feedback signal based on the position signal, which contains information about a proposed change of the positions. One of the components is assigned to the proposed change. The calculation unit is configured to verify a contact or actuation of the assigned component and to generate a second feedback signal based thereon. The operating element is configured to output the first and second feedback signals.

A chair comprises a seat support with a front seat support part and a rear seat support part which is connected thereto via a pivoting axis. Seat inclination can be modified by means of an adjusting element by operation of a turning handle. The turning handle is connected to the adjusting element via a coupling element, with the axes of rotation of the adjusting element and turning handle not being in alignment. This ensures conveniently accessible modification of seat inclination.

An office chair is provided with includes a chair arm assembly on each opposite side thereof for supporting the arms of a user. The arm assemblies each include a latching assembly to permit adjustment of the height of an arm cap thereof while maintaining the arm cap at a selected elevation. The latch assembly is engageable with an inner liner provided within a support post. Further, the armrest assembly has a plurality of interconnected and relatively movable plates which permit adjustment of the angular orientation of the arm cap along with adjustment of the arm cap in the front-to-back direction and the side-to-side direction.

A chair, such as a conference or office chair, includes a seat support; a backrest support; a storage member formed as a force storage element; and a transmission coupling the seat support with the backrest support which allows a pivoting of the backrest support and the seat support between an upright position and a backwardly pivoted position according to a predetermined sequence of movements. The force storage element is coupled with the seat support and the backrest support such that the predetermined sequence of movements is facilitated and the storage member provides a force restoring in the upright position and wherein the flexibly elastic storage member forms in conjunction at least with a first articulated rotation point of the transmission a kinematic chain.

This invention with improvements in external figure and structure based on new and different concept for pillow and chairs is intended to create practical convenience in daily life and to minimize the neck and shoulder pain created from usage of uncomfortable pillows in bed and inconvenient chair during long-distance travel. In an aspect of external figure, the invention adopts the concept of ‘ergonomic shape hole of head-insert’ which they never tried so far. As for the structure, this invention provides insert space hole on the body of applicable objects which ‘pillow / headrest’ (it has an ‘ergonomic shape hole of head-insert’) combines with, for easy process of assembly and separation between body and pillow / headrest. Additionally it is designed to maximize the portability and to accommodate the multiple usage by unifying the shape and size of ‘pillow / headrest.’ This invention promotes the convenience and practicality for everyday use of the pillow and chair. Applicable objects are: 1) bed pillows for sleeping on and pillows for leaning 2) portable pillows in outdoor camping area 3) head cushions on existing reclining chairs 4) headrest on passenger seats of long distance transportations including airplane, ship, train, bus 5) headrest on office chairs and reclining chairs 6) headrest on drivers' seats and assistant drivers' seats of automobile during rest and sleeping after reclining backward 7) headrest function of back seats of the car 8) headrest on sofas In particular, they can reuse the existing chairs by simply remodeling the product; this will be a valuable attempt to benefit both in economic aspects (saving natural resources) and eventually to increase the convenience of customers.

An article of furniture includes a base, a seat frame supported by the base, and a back frame attached to the seat frame. The back frame includes an upper portion and a lower portion. The upper portion is connected to the lower portion by at least one first elastomeric member such that the upper portion is moveable relative to the lower portion. The upper portion is moveable from an upright position to at least one reclined position. In some embodiments of the article of furniture, the at least one first elastomeric member is a strap composed of a polymeric material, such as, for example, a thermoplastic polyester elastomer or a polymeric material containing at least one elastomer. In some embodiments, the article of furniture may be designed as a chair, a lounge chair, or an office chair.

A chair having an adjustable resilient back recliner mechanism, a pair of adjustable armrests, modular upper back portions and an adjustable lumbar support. The chair includes a tension control that adjusts the tension in the recliner mechanism. The tension control is cam-operated to permit adjustment throughout the entire range of adjustability with only limited rotational movement of a control knob. The chair includes a recline limit control that adjusts the limit of rearward movement in the recliner mechanism. The limit control includes a cable operated stop that interact with a stepped trackway on the seat. The chair further includes a height control for adjusting the seat height including a push-button located in the tension control knob. The armrests include height and angle adjustment mechanisms. The lumbar support includes a lumbar cam that is rotatably mounted to a lumbar pad. The lumbar cam includes a plurality of lobes that vary in radius so that rotation of the cam causes variation in the contour of the lumbar region. The chair back includes a fabric carrier with an upper back portion mounting platform that permits attachment of any of a variety of modular upper back portions.

A resilient leaning position-restoring device for a height-adjustable chair back of an office chair includes a back support unit, a height-adjustable chair back disposed on the back support unit, and a resilient leaning position-restoring device disposed between the back support unit and the chair back. The resilient leaning position-restoring device essentially includes a sliding element slidable along a slot disposed on the back support unit and being pulled downward by a spring. The upper end of the sliding element extends to form a resilient member of an inverted U shape. A lower end of the resilient member is coupled to the chair back. The resilient member maintains the predetermined resilience thereof for supporting the bottom of the chair back while height adjustment of the chair back is underway. The bottom of the chair back lends proper support to the sitter's waist, regardless of an adjusted position of the chair back.

A back support (12) for a chair includes a chair frame (20), a pair of upright support posts (18) mounted to the chair frame (20), the upright support posts (18) being laterally flexible with respect to the chair frame (20), a plurality of flexible support arms (21) extending laterally outwardly from the upright support posts (18), the support arms (21) each including a peripheral edge (23), the support arms (21) including a first set of support arms extending in a first lateral direction from the upright posts (18) and a second set of support arms extending in a second direction from the upright posts (18); and a material (42) extending in tension between the peripheral edges (23) of the first set of support arms and the peripheral edges (23) of the second set of support arms such that at least a central portion of the material (42) is spaced from the support arms (21).

A headrest for an office chair includes a headrest body, two connecting blocks, a support frame and a hook. The support frame has two L-shaped hooks in an intermediate portion, and the headrest can be assembled with a backrest of an office chair by a hook and L-shaped hooks of the support frame to enable the headrest being assembled with any office chair easily. Moreover, the headrest body can be adjusted in its height and angle to be usable by users of different physical heights.

An office chair is provided with includes a chair arm assembly on each opposite side thereof for supporting the arms of a user. The arm assemblies each include a latching assembly to permit adjustment of the height of an arm cap thereof while maintaining the arm cap at a selected elevation. The latch assembly is engageable with an inner liner provided within a support post. Further, the armrest assembly has a plurality of interconnected and relatively movable plates which permit adjustment of the angular orientation of the arm cap along with adjustment of the arm cap in the front-to-back direction and the side-to-side direction.

A synchronizing mechanism for correlated seat / backrest motion of an office chair is provided with a base carrier to be placed on a chair column; a seat carrier, which is pivotable about a transverse axis and, at its front end, articulated to the base carrier; and a backrest carrier, which is also pivotable about a transverse axis and articulated to the base carrier. It is coupled with the seat carrier such that a backward pivoting motion of the backrest induces a lowering motion of the rear end of the seat carrier. The joint between the base carrier and the seat carrier is a turning and sliding joint so that the lowering motion of the seat carrier is combined with a horizontal sliding motion.

A ventilation and cooling system for an AERON office chair is disclosed. It consists of an air mover, a power supply unit and a control switch. The system attaches underneath the seat of the chair. Airflow from the air mover is directed towards the seat to dissipate the body heat of the chair's occupant. The increased airflow cools the posterior and crotch regions of the person occupying the chair.