Abstract: An office chair has an armrest. In order to provide an armrest which is of particularly simple construction, the armrest contains an armrest column and an arm support which is mounted on the armrest column and is rotatable about a rotation axis and which is linearly displaceable relative to the armrest column. A rotary mechanism for the rotation of the arm support is arranged substantially fully within the armrest column.

Abstract: A chair armrest which includes an armrest body, a first component, a second component, and a mounting seat is revealed. The armrest body consists of an armrest cover, an armrest base and a rectangular space formed therein. The first component is mounted in the rectangular space of the armrest body and arranged at a first sliding slot of the armrest base while the second component is mounted in the rectangular space of the armrest body and disposed on the first component. The mounting seat is for loading the armrest body. The armrest body can be moved relative to the first component, the second component, the mounting seat and the protruding axis in the lengthwise direction by the first sliding slot for position adjustment. Thereby the chair armrest can be rotated or moved in the lengthwise/widthwise direction for adjustment under the condition that the overall thickness thereof is effectively reduced.

Abstract: An armrest structure includes a main base tube, an outer base tube, a control member, and a spring, and the control member includes a pivot part, a press control part, a fastening part, and a restraining part, when the press control part of the control member is pressed, the spring is pushed to store elastic energy, and the fastening part of the control member can be released from being engaged with the main base tube, and the outer base tube can be adjusted to longitudinally lift; in the other hand, when the force applied on the press control part of the control member to press and buckle is removed, the fastening pan can be engaged with the main base tube, so that the outer base tube is unable to lift and move relative to the main base tube.

Abstract: The present invention relates to an armrest tilting device which is slimmed in a width direction of the vehicle by including a housing, a shaft which is rotatable relative to the housing, a bracket installed to interlock with the shaft, a first ratchet installed to be rotatable with respect to the bracket, a second ratchet fixed to the housing and engaged with the first ratchet, a lock spring installed between the bracket and the first ratchet so that, with respect to rotation of the bracket, teeth of the first ratchet are sequentially engaged with teeth of the second ratchet, and a leaf spring installed between an inner side surface of the housing and the bracket so as to apply an elastic force in an axial direction of the shaft.

Abstract: An adjustment mechanism is adapted to be installed in an armrest that includes a support member and an arm member disposed over and mounted rotatably to the support member. The adjustment mechanism includes a fixed unit adapted to be fixedly mounted in the support member, and a rotating unit adapted to be co-rotatable with the arm member. The fixed unit includes an elastic plate formed with a plurality of notches, and a joint block having a plurality of concavities. The rotating unit includes a linking plate having two rotating columns, and an engaging component. The rotating columns removably engage two corresponding ones of the notches, and the engaging component removably engages one of the concavities of the joint block.

Abstract: An armrest according to the present invention includes a support member (8a, 215, 308a) which is a support structure, and an armrest main body (8b, 216, 308b), the armrest main body (8b, 216, 308b) includes a lower layer member (8j) including an operation lever (8p, 235, 308p) which is supported by a support member (8a, 215, 308a) to be movable in a forward-and-rearward direction and is operated by a seated person, and an upper layer member (8k) supported by the lower layer member (8j) to be movable in right-and-left direction, and the upper layer member (8k) covers the operation lever (8p, 235, 308p) at a base position in the right-and-left direction.

Abstract: On an article of furniture, a bearing assembly is disposed between an elongate central structure and a seat, which permits rotation between the seat and the base. A tablet is provided, which is connected to a tablet arm with a first cylindrical member, and the tablet arm is connected to the elongate central structure of the base with a second cylindrical member. The second cylindrical member is disposed around the elongate central structure with a flange at the upper end thereof. The bottom of the seat has a lobed friction bushing disposed such that the flange of the second cylindrical member contacts the lobed friction bushing and frictionally resists rotation of the tablet arm as the seat rotates 360 degrees relative to the base, leading the tablet to follow the seat as it rotates. A lobed friction bushing is also provided.

Abstract: In an aspect, provided is an adjustable telescoping assembly. The adjustable telescoping assembly comprises a first support member and a second support member that is slidable upon the first support member and which defines an interior volume. At least one damping element is provided that extends from outside the second support member, through the second support member into the interior volume and engages the first support member.

Abstract: An armrest (8, 208) and a chair (100, 200) according to the present invention are provided with: an armrest body (8b, 208b) which is a movable member including a placing surface for supporting a limb of a seated person, and which is supported by a support rod (8a, 208a) from below so as to be movable in a horizontal direction; and a through-space (S, 200S) which is a guide portion indicating the position to be touched by the seated person when moving the armrest body (8b, 208b).

Abstract: An adjustable armrest includes a post and an armrest body. A sliding member is coupled to the post and has a non-circular contour on a horizontal plane. The armrest body receives a sliding seat. The sliding seat includes a track extending in a length direction. The sliding member is received in the track. The armrest body is movable relative to the post. The track includes a first section and a second section interconnected to the first section. The first and second sections are arranged in the length direction. The first section extends along a rectilinear line. The second section extends along a non-rectilinear line.

Abstract: An armrest (8, 208) and a chair (100, 200) according to the present invention are provided with: an armrest body (8b, 208b) which is a movable member including a placing surface for supporting a limb of a seated person, and which is supported by a support rod (8a, 208a) from below so as to be movable in a horizontal direction; and a through-space (S, 200S) which is a guide portion indicating the position to be touched by the seated person when moving the armrest body (8b, 208b).

Abstract: A rotation adjuster of an armrest is connected on a bottom of a supporting extension, a rotatable fixer connected on a holding tray, and a U-shaped plate having a circular groove, a slidable seat, a support post, two slidable engagement structures, and multiple arcuate notches. The holding tray includes a body and multiple spaced recesses. The rotatable fixer includes multiple columns, a circular protrusion, multiple receiving orifices configured to accommodate multiple springs, multiple balls and the multiple pushing elements respectively, and a connection orifice. The U-shaped plate includes the circular groove, a first rib, a threaded orifice, and two locking pegs. The slidable seat includes a U-shaped frame, a covering sheet, a first slot, and two second slots. Each slidable engagement structure includes multiple arcuate notches and a flexible projection received in a trench. A screw is inserted through the connection orifice of the rotatable fixer.

Abstract: A buoyant pool lounge chair frame and buoyant pool lounge chair using the same are disclosed. In one embodiment of the buoyant pool lounge chair for supporting a person while the buoyant pool chair is floating in water, frame members collectively form an open chair frame including a back frame and leg frame pivotally coupled thereto. Buoyant cushions are attached to the frame members to form a chair seat, a backrest, and a leg rest. A pair of rear pivotal coupling and clutch assemblies are coupled to the seat frame and to the back frame to adjust and fix the angle of recline of the back frame relative to the seat frame. Similarly, a pair of front pivotal coupling and clutch assemblies coupled to the leg frame and to the back frame to adjust and fix the angle of extension of the leg frame relative to the seat frame.

Abstract: A lifting structure for an armrest mounted on a left side or a right side of a chair contains: an accommodation sleeve, a fixer, a swing arm retained in one of multiple recesses of the fixer via a slidable seat, an extension located between two drive members of the swing arm and accommodated inside a receiving tab of the slidable seat, and a connection plate covered on the accommodation sleeve so that the fixer is connected with a holder, and the connection plate is coupled with an armrest seat, thus connecting the armrest. The accommodation sleeve includes two concave seats. The fixer includes a groove and two closed slots. The slidable seat includes the receiving tab, two ribs extending, two cutouts, and two elongated orifices. The swing arm includes a coupling rod, an oblique hole, a locking projection, a column, and an indentation.

Abstract: An armrest, in particular for an office chair, achieves improved handling and adjustability in an individual and in a particularly variable manner by providing a preferably height-adjustable armrest column, an arm support carrier which is mounted on the armrest column and which is rotatable about a first rotational axis, and an arm support which is mounted on the arm support carrier. The arm support is rotatable about a second rotational axis and is displaceable in a linear manner relative to the arm support carrier. The two rotational axes are spaced apart from one another.

Abstract: The invention is to a type of disassemblable folding chair that includes supports legs on two sides and an upholstered seat back. The support legs include front-tilting support bars and rear-tilting support bars that are cross-hinged with movable hinge joints. Within this structure, the front-tilting support bars on the two sides and the rear-tilting support bars on the two sides are joined together by two cross-hinged diagonal bars. One end of the diagonal bars is directly hinged onto the two front-tilting and rear-tilting support bars; the other end is hinged on the front-tilting and rear-tilting support bars via a detachable structure. When disassembled, the two support legs can be folded together.

Abstract: On an article of furniture, a bearing assembly is disposed between an elongate central structure and a seat, which permits rotation between the seat and the base. A tablet is provided, which is connected to a tablet arm with a first cylindrical member, and the tablet arm is connected to the elongate central structure of the base with a second cylindrical member. The second cylindrical member is disposed around the elongate central structure with a flange at the upper end thereof. The bottom of the seat has a lobed friction bushing disposed such that the flange of the second cylindrical member contacts the lobed friction bushing and frictionally resists rotation of the tablet arm as the seat rotates 360 degrees relative to the base, leading the tablet to follow the seat as it rotates. A lobed friction bushing is also provided.

Abstract: A chair assembly includes a back support arrangement including a back support arrangement, a seat support arrangement and a four-bar arrangement that includes a rearward end and a forward end that is adjustable between a raised and lowered positions, and an arm rest assembly adapted to support the arm of a seated user thereon and supported on the forward end of the four-bar arrangement, wherein the rearward end of the four-bar arrangement is pivotably supported from an arm support structure for pivotable movement about a substantially vertical pivot axis such that the forward end of the four-bar arrangement is moveable between a first position and second position located laterally outward from the first position, and wherein the substantially vertical pivot axis is located forwardly of a rearmost edge of an upwardly-facing surface of the seat support arrangement.

Abstract: A headrest lifting mechanism is revealed. The headrest lifting mechanism is disposed on a seat back and including a lifting base, a bottom-side vertical support and an elastic positioning rod. A headrest is connected to an upper end of the bottom-side vertical support. A positioning end of the elastic positioning rod fixed on the bottom-side vertical support is moved downward into one of the slots of the lifting base owing to material elasticity when the bottom-side vertical support is assembled with the lifting base. Thus the bottom-side vertical support and the positioning end are slid and positioned together in the slots of the lifting base. The number of the parts is reduced and the assembly is simplified. This enables cost reduction and mass production.

Abstract: An armrest assembly includes a mounting plate disposed on a support column and having an elongated moving slot for a first pivot shaft to movably extend therethrough, an armrest plate having a sliding slot elongated transverse to the moving slot such that the first and second pivot shafts extend through and are slidable along the sliding slot to allow the armrest plate to be horizontally movable and turnable relative to the mounting plate, and a retaining unit disposed to produce a magnetically attractive force that generates resistance against a relative movement of the armrest plate to the mounting plate.

Abstract: A portable seat organizer including: a main body having an upper part joined to a lower part by a middle part, the upper part having a first upper surface defining a first plane, and the lower part having a first lower surface defining a second plane, the first and second planes being parallel and not coplanar; an extension plate slidably coupled to the upper part and including at least one of a support slot and a support tab, the extension plate slidable with respect to the upper part in a direction parallel to the first plane and away from the lower part to form an upper extension of the upper part; and a first accessory including a first accessory tab and a first accessory slot to respectively engage the at least one of the support slot and the support tab.

Abstract: A chair assembly includes a back support arrangement that includes a back frame member and a forwardly-facing surface configured to support a user, a four-bar linkage assembly including a first linkage member, a second linkage member, a third linkage member and a fourth linkage member each pivotably coupled to one another such that the four-bar linkage assembly includes an upper end that is adjustable between raised and lowered positions, and an arm rest assembly supported on the upper end of the four-bar linkage assembly, wherein a lower end of the four-bar linkage assembly is pivotably supported from an arm support structure for pivotable movement such that the upper end of the four-bar linkage assembly is movable between a first position and second position located laterally outward from the first position, and wherein the fifth pivot point is located forwardly of the back frame member.

Abstract: A vehicle armrest assembly for a door and console includes a linear actuator extending vertically through at least a portion of an armrest substrate and having a pin at an upper end, a support plate positioned above the armrest substrate and having a slot, wherein the pin slidably engages the slot to allow the support plate to operate laterally along the slot and rotationally about the pin between a plurality of lateral and rotational positions, respectively. The linear actuator vertically operates the support plate between a plurality of vertical positions and a cover member is disposed over the support plate.

Abstract: An armrest for a chair includes a first slideable member moveably positioned within a support post and a second slideable member moveably positioned within the support post. The first slideable member is moveably positioned within a channel of the second slideable member such that the first slideable member is moveable relative to the second slideable member. An actuator is connected to the first and second slideable members. The actuator can optionally be included that is actuatable from a locked position to an unlocked position. The first and second slideable members are immovable within the post when the actuator is in the locked position and the first and second slideable members are moveable within the post when the actuator is in the unlocked position.

Abstract: An adjustable armrest for a chair is disclosed herein and comprises an assembly of a mounting plate, a mounting base, and two arms. The adjustable armrest's mounting plate is vertically positionable, such that when the mounting plate is depressed, the motion of the mounting plate is restrained relative to the mounting base. Additionally, when the mounting plate is raised vertically, the arms and the mounting plate can be repositioned.

Abstract: A chair assembly includes a four-bar linkage assembly including a first linkage member, a second linkage member, a third linkage member and a fourth linkage member each pivotably coupled to one another such that the four-bar linkage assembly includes an upper end that is adjustable between raised and lowered positions, and an arm rest assembly adapted to support the arm of a seated user thereon and supported the upper end of the four-bar linkage assembly, wherein a lower end of the four-bar linkage assembly is pivotably supported from an arm support structure for pivotable movement, such that the upper end of the four-bar linkage assembly is moveable between a first position and second position located laterally outward from the first position.

Abstract: An armrest assembly may include a base member, an armrest member, a mechanism and a biasing member. The armrest member may be linearly movable relative to the base member between a first position and a second position. The mechanism may be associated with the armrest member and may be movable between an engaged configuration restricting linear movement of the armrest member relative to the base member and a disengaged configuration allowing linear movement of the armrest member relative to the base member. The biasing member may bias the armrest member in a linear direction from the second position toward the first position.

Abstract: An armrest assembly includes an adjusting seat received in a base slideable in a length direction. The adjusting seat is slideable in a width direction relative to a seat fixed to the base. A first control button initially engaged with the adjusting seat can be operated to disengage from the adjusting seat and to disengage a transverse positioning block from the seat, allowing adjustment in the length and width directions. A lower rod is fixed to a chair body and is received in an upper rod movable in a height direction. A second control button is mounted in a window in the upper rod and includes engagement teeth engaged with a gear on a screw rod in threading connection with a screw rod coupling seat on the lower rod. The second control button can be operated to disengage the engagement teeth from the gear, allowing adjustment in the height direction.

Abstract: A sliding arm mechanism for attaching to an arm of a wheelchair is provided herein. One concept is directed to a sliding arm mechanism that includes a main portion and an inner cavity. The sliding arm mechanism also includes a slide rail, which is adapted to be housed within the inner cavity of the main portion. The slide rail and the main portion are slidably coupled to allow the main portion to move laterally over the slide rail in a direction parallel to the top part of the arm of the wheelchair, thus allowing the main portion to move between a first position and a second position. In some embodiments, the first position corresponds to a full-length position and the second position corresponds to a desk-length position, such that a user can adjust the sliding arm mechanism to access a desk or table.

Abstract: A wheelchair includes a first seat portion and a second armrest rotatably fixed to a first support portion of the first seat portion, a first rotation axis of this second armrest is arranged on an imaginary plane perpendicular to a back bottom support surface and parallel to the front and rear direction of the first seat portion so as to make a predetermined angle with respect to the back bottom support surface.

Abstract: In one aspect, the subject embodiments are directed to a seat that includes a seat bottom and a seat back, wherein the seat back is pivotable with respect to the seat bottom about one or more pivots. A linkage assembly is employed that is coupled to each of the one or more pivots. The linkage assembly includes a linking component that has a first location mounted to the seat bottom and a second location mounted to the seat back. A cam is coupled to the seat back location, wherein a dowel is permanently affixed to the cam. An end distal from the cam, a pin extends perpendicularly from the dowel and is angled at between 20 and 70 degrees upward from a plane formed by an arm channel.

Abstract: A chair assembly includes a four-bar linkage assembly including a first linkage member and a second linkage member each having a U-shaped cross-sectional configuration that cooperate to form an interior space, a third linkage member and a fourth linkage member, wherein the linkage members are pivotably coupled to on another such that an upper end of the four-bar linkage is vertically adjustable between a raised and lowered positions, an arm rest assembly supported on the upper end of the four-bar linkage assembly, and a locking assembly including a first locking link having a first surface and a second locking link having plurality of teeth corresponding to a plurality of vertical positions of the four-bar link located between the raised and lowered positions, wherein the locking links are movable between locked and unlocked positions, and wherein the first and second locking links are located within the interior space.

Abstract: The invention relates to an apparatus for continuous inclination adjustment of a component part of a vehicle, in particular a pivotable vehicle armrest, pivotable about a pivot axle. The apparatus is configured to lock various angles of inclination in a first pivoting direction and unlock them when a pre-settable angle of inclination is reached and/or exceeded. This allows the pivotable component part of the vehicle to be moved back into a starting position contrary to the first pivoting direction. The continuous inclination adjustment apparatus has a sleeve freewheel device for setting the continuous inclination, a coupling device for coupling and uncoupling the sleeve freewheel device and a control device for actuating the coupling device.

Abstract: Multiple features of seating assemblies are detailed. Innovations in or to tray tables, luggage bars, arm rests, seat backs, and seat frames are included, with features being incorporated into seating assemblies either separately or in any combination. The assemblies are configured principally for passenger aircraft but may be used elsewhere as appropriate or desired.

Abstract: A seat for a transport vehicle includes a seat surface, an armrest, and a child armrest. The child armrest is configured to adopt an adult position and a child position. In the adult position the child armrest is arranged in a stowed position in which the child armrest is incorporated in a contour of the armrest. In the child position the child armrest is arranged in a use position in which the child armrest has a reduced spacing from the seat surface in the vertical direction and a reduced spacing from an opposing armrest in the horizontal direction.

Abstract: An armrest is pivotally coupled to a seat back for movement between a stowed position and a use position. The armrest comprises a support frame and a cam. A memory mechanism is coupled to the support frame for actuation between an unlocked condition providing selective adjustment of the armrest in the use position and a locked condition for retaining memory of the use position upon pivotal movement of the armrest between the stowed position and use position. The memory mechanism includes an elongated memory bar fixedly secured to the support frame, a guide member slidably coupled to the memory bar, and a wedge plate slidably and pivotally coupled to the memory bar for movement between a slide position to allow sliding movement of the wedge plate along the memory bar and a wedge position for lockingly wedging the memory bar between the wedge plate and the guide member.

Abstract: Disclosed herein is a single arm adjustment mechanism for supporting an object, the single arm adjustment mechanism comprising: a support arm; an upper adjustment assembly coupled to an upper end of said support arm, said upper adjustment assembly capable of being coupled to said object such that said object pivots about a first axis; and a lower adjustment assembly capable of being fixed to a support and pivotally coupled to a lower end of said support arm such that said support arm pivots about a second axis parallel to said first axis in order to maintain said object in a desired angular orientation with respect to said support.

Abstract: An armrest device including a stationary shaft 2, fixed to a seat frame, an armrest body 7 in which the stationary shaft 2 is inserted and which is rotatable, a lock spring 3 made of a coil spring tightly wound around the stationary shaft 2, with one end of the coil spring serving as a stationary-side hook 3a locked to the armrest body 7, and the other end of the coil spring serving as a free-side hook 3b A hook-supporting part 12 that supports the free-side hook 3b such that the free-side hook 3b is raised in the axial direction of the stationary shaft 2, a hook-fitting part 13 that enlarges the diameter of the lock spring 3 by dropping the free-side hook 3b on the hook-supporting part 12 downward in the axial direction of the stationary shaft 2, a plate 11 for a hook, where the plate 11 projects from the armrest body 7, and a cam member 5 on the stationary shaft 2.

Abstract: A zero turn lawnmower mounting support arm affixable to the frame assembly portion of the lawnmower and being made up of a mounting tube unit affixed to the topside of the frame assembly and to which a first hollow tube unit is perpendicularly affixed with a laterally positioned mounting plate being also affixed to the frame assembly and the mounting tube and the first hollow tube unit with a second hollow tube unit atop of which there is held a pivotable handrest base unit equipped with a cushion and pivot arm stop complex unit with the second hollow tube unit being adjustably fitted about the first hollow tube unit.

Abstract: An adjustable armrest for a chair is disclosed herein and comprises an assembly of a mounting plate, a mounting base, and two arms. The adjustable armrest's mounting plate is vertically positionable, such that when the mounting plate is depressed, the motion of the mounting plate is restrained relative to the mounting base. Additionally, when the mounting plate is raised vertically, the arms and the mounting plate can be repositioned.

Abstract: A seating assembly 10 having a pair of armrests 12, 14; a footrest 20; a backrest 30, and a seat portion 24 which may each be independently and selectively moveable.

Abstract: An armrest for a chair having a first member connected to the chair; a second member selectively rotatable relative the first member; means disposed between the first and second members for resisting the rotational movement between the first and second members.

Abstract: A chair arm adjustment device according to embodiments of the present invention includes an arm pad base slidably coupled to the arm support, the arm pad base sliding substantially horizontally in two degrees of freedom with respect to the arm support within a range of motion of the arm pad base with respect to the arm support, and an arm brake assembly coupled with the arm pad base, the arm brake assembly moveable between a locked position in which the arm brake assembly substantially inhibits movement of the arm pad base relative to the arm support and an unlocked position in which the arm brake assembly does not substantially inhibit movement of the arm pad base relative to the arm support, wherein the arm brake assembly moves from the unlocked position to the locked position at any position of the arm pad base within the range of motion.

Abstract: An armrest assembly is provided for adjusting an armrest of a seating unit in three degrees of motion. The armrest assembly includes an angle-adjustment mechanism that allows the armrest to pivot and to translate forward, and a lift mechanism that enables vertical articulation of the armrest. The angle-adjustment assembly includes a pivot bracket with a downwardly disposed pin and a shuttle with an arcuate slot to receive the pin. The arcuate slot includes contoured walls that form detents for restricting movement of the pin, thereby restraining rotation of the shuttle, with respect to the pivot bracket, to predefined angular positions. The lift mechanism includes a rack with ride element(s) extending therefrom and locking teeth, and a control bar with track(s). An upward manual actuation of the control bar causes the track to shift laterally and retract the locking teeth, via interaction between the track(s) and ride element(s), respectively.

Abstract: The present invention relates to a machine operator seat of a construction machine having a seat surface, a backrest, which is situated opposite to the front seat edge in the longitudinal direction of the seat surface, and at least one armrest situated laterally to the seat surface, comprising a base part, an arm support, and at least one operating element, the arm support being situated in the rear area in the longitudinal direction and the at least one operating element being situated in the front area of the armrest in the longitudinal direction. Furthermore, the present invention relates to a construction machine, in particular a road miller, recycler, stabilizer, or a road roller, in particular a tandem roller, having such a machine operator seat.

Abstract: The present invention relates to a device (01, 22) for use in the interior of a vehicle, comprising a first and a second carrier element (02, 23, 03, 24) and a connecting linear guide, wherein the first carrier element (02, 23) features two linearly extending first guiding surfaces (06, 07, 27, 28) and the second carrier element (03, 24) features two first abutment surfaces (12, 13, 33, 34), wherein the carrier elements (02, 23, 03, 24) are longitudinally displaceable relative to each other when the abutment surfaces (12, 13, 33, 34) slide along the guiding surfaces (06, 07, 27, 28), and wherein the linear guide produces a clamping effect which prevents self-actuated displacement of a carrier element (02, 23, 03, 24) due to vehicle movements, wherein the linear guide further features a second guiding surface (08, 29) being associated with the first carrier element (02, 23) and features a second abutment surface (14, 35) being associated with the second carrier element (03, 24), wherein, when the first and the

Abstract: A seat armrest includes a lower sleeve, an upper sleeve, a driving device, and an adjustable armrest piece. The lower sleeve includes a connecting portion, an inner support portion, and a cover. A stopping device is protruded from the shaft hole towards the axis of the shaft hole. The upper sleeve includes an outer support portion, an opening portion, two slide rails, a partition, and a driven device. The driving device includes a directing frame, a slide plate, a first contact end, and a second contact end. The armrest piece includes a lower slide cover, a slide cover and a press button, which has a release position and a lock position that enables the user to release or lock the driven device and the stopping device, in turn to adjust the height between the inner and outer support portions.

Abstract: A chair elbow capable of rotating with double shaft is disclosed. Two bearings are disposed on a mount board fixed on a chair. Each of the bearings connects one end of each of two rotating plates, while the other ends thereof are pivotally connected in a linear slot of a seat plate used for securing an armrest. The length of the slot is longer than the distance between the two bearings, and the latter is longer than the length of the rotating plates. Thus, the armrest on the seat plate can rotate against the mount board with 360 degrees and move forward and backward.

Abstract: A universal reclining armrest system for use with an articulated examination chair. The system includes an armrest adapter having a universal aperture for receiving a post portion of an armrest assembly. The armrest adapter further includes a splined peg for coupling to a pivoting mechanism of an articulated chair. The pivoting mechanism enables the chair to move throughout an operable range of motion while maintaining a fixed rotational position of an attached armrest adapter. The armrest assembly further includes an adjustable joint to provide 360° of rotational adjustment to the armrest relative to the fixed position of the armrest adapter.

Abstract: An armrest adjustment device includes an armrest arranged at a top surface of an armrest support. The lower part of the armrest support is connected to a chair seat. The armrest can be adjusted to move forward and backward in relation to the chair seat. A first component is mounted in the armrest. The first component is assembled with and fixed on the armrest support so that the armrest can be moved forward and backward in relation to the first component. Moreover, a second component is arranged between the armrest and the armrest support. Instead of the first component, the second component is assembled with and fixed on the armrest support. Thus the armrest is moved in the left/right direction in relation to the second component.