Abstract: A folding chair has a front leg assembly and a rear leg assembly rotatably mounted to the front leg assembly, the rear leg assembly foldable between an unfold extended configuration and a folded compact configuration wherein the rear leg assembly extends about parallel to the front leg assembly. The folding chair has a backrest mounted to the front leg assembly. The folding chair has a seat rotatably mounted to the front seat assembly, the seat being movable between a seating position and an upright position. The hair has a counterweight and damping components damping the pivotal motion of the seat when reaching the seating position and the upright position.

Abstract: A chair having a separately configured seating assembly and backrest that move together upon reclining movement of a user. The seat assembly can be pivoted between a lowered, seating position and a raised, nesting position. The backrest can be pivoted between an upright position and a reclined position. The seat assembly includes a seat that is movable along seat frame sub-assembly that includes a pair of glide tracks upon the reclining movement of the backrest. A bias member of the seat assembly urges the seat into a retracted position and the backrest into an upright position. The seat assembly is pivotally mounted to the support frame of the chair such that the entire seat assembly can be pivoted to a raised, nesting position. The seat assembly can also be pivoted to a lowered, seating position to allow multiple chairs to be stacked.

Abstract: A stacking chair with a frame connected to a rotating seating portion and backrest portion each of the seating portion and backrest portion having matching profiles such that when stacked the weight of the chairs is distributed across facing surfaces that nest together due to matching profiles, the seating portion may rotate through an angle of rotation greater than 90 degrees and the seating and/or backrest portions may include a injection molded foam interior surrounding an internal frame and with a removable cover on the outside of the foam.

Abstract: A stacking chair with a frame connected to a rotating seating portion and backrest portion each of the seating portion and backrest portion having matching profiles such that when stacked the weight of the chairs is distributed across facing surfaces that nest together due to matching profiles, the seating portion may rotate through an angle of rotation greater than 90 degrees and the seating and/or backrest portions may include a injection molded foam interior surrounding an internal frame and with a removable cover on the outside of the foam.

Abstract: A seat device is provided, comprising: a frame, a seat platform which is hinged to the frame so as to be pivotable between a completely folded position and a completely unfolded position, in which a user is allowed to seat thereon, and a spring mechanism with a variable overall spring constant, via which the seat platform is connected to the frame in a manner so as to be biased towards its folded position, thereby reducing an effort required by the user, who seats on the seat platform, for standing up therefrom, wherein the spring mechanism comprises a plurality of spring devices, each of which has an at least substantially constant spring characteristic which is at least substantially defined by a corresponding spring constant, and which are connected to each other in series, wherein the spring mechanism is provided such that, when the seat platform is at least substantially in its completely folded position, the variable overall spring constant is lower than in the case when the seat platform is at least su

Abstract: Rocker style chairs and rocker style chairs with pivoting seats are provided along with modular components for use within rocker style chairs and parts for assembling within the modular components. The related components and chair assemblies minimize manufacturing time, maximize material usage and decrease related installation time. The related rocker style chairs may provide comfort to chair occupants and minimize noise during related chair component motion.

Abstract: A seating arrangement for stadia and the like includes a beam for receiving one or more seats, where the seat has a backrest portion fixedly mounted to the beam and a movable seat portion mounted on the beam for pivotable movement about the beam from a generally horizontal seating position to a generally upright non-seating position.

Abstract: A back reclining apparatus interlocking with a seat cushion for a vehicle may include a back frame including a main frame fixed to a vehicle body and a reclining frame that may be selectively reclined around a reclining hinge on an inner surface of the main frame, a reclining locking unit connected to the main frame and the reclining frame to selectively release locking of the main frame and the reclining frame, a cushion locking unit selectively releasing locking of a cushion frame and the reclining frame, and a cushion sliding unit connected between the cushion frame and a floor panel to interlock with the reclining frame and to make the cushion frame move to slide forward when the locking of the reclining locking unit may be released and the reclining frame may be reclined around the reclining hinge.

Abstract: In a vehicle seat, a first slide mechanism disposed on a side wall side of the vehicle compartment is provided with a hinge mechanism having a biasing member that flips up a seat body toward the side wall, and a second slide mechanism disposed on the inner side of the vehicle compartment is provided with a coupling/decoupling switching mechanism for locking or unlocking the mutually coupled second slide mechanism and seat body. The seat body is flipped up by the biasing member when the coupling/decoupling switching mechanism is in the unlocking position. A flip-up position detecting unit is provided for detecting a predetermined flip-up position of the seat body within a slidable range of the seat body, and the coupling/decoupling switching mechanism is switched to the unlocking position when the flip-up position detecting unit detects the flip-up position.

Abstract: A seat assembly for a vehicle includes a frame having a seat and a seat back. The seat is operable between a substantially horizontal deployed position and a substantially vertical stowed position. A first brace operably connects the frame with a vehicle rocker panel. A second brace operably connects the frame with a vehicle transmission tunnel.

Abstract: In a vehicle seat, a first slide mechanism disposed on a side wall side of the vehicle compartment is provided with a hinge mechanism having a biasing member that flips up a seat body toward the side wall, and a second slide mechanism disposed on the inner side of the vehicle compartment is provided with a coupling/decoupling switching mechanism for locking or unlocking the mutually coupled second slide mechanism and seat body. The seat body is flipped up by the biasing member when the coupling/decoupling switching mechanism is in the unlocking position. A flip-up position detecting unit is provided for detecting a predetermined flip-up position of the seat body within a slidable range of the seat body, and the coupling/decoupling switching mechanism is switched to the unlocking position when the flip-up position detecting unit detects the flip-up position.

Abstract: A portable chair has a mechanism for self folding up and cushioning a seat. The mechanism includes a tension spring assembled between a seat frame and a rear leg for collapsing the seat, and a cushioning pad affixed on the rear leg. The tension spring has first and second hook elements disposed on different orientations and engaged with holes. The hook elements are easy to install, and reduce the risk of disengagement after assembly. The length of the spring is substantially equal to the length of the space in which it is assembled, so that it is not excessively stretched during assembly, thereby preventing spring fatigue. The cushioning pad is integrally formed and includes retainer and insert portions through which it is affixed with the rear leg, and a cushion portion that can absorb noise and vibration when the seat is collapsed.

Abstract: A portable chair has a mechanism for self folding up and cushioning a seat. The mechanism includes a tension spring assembled between a seat frame and a rear leg for collapsing the seat, and a cushioning pad affixed on the rear leg. The tension spring has first and second hook elements disposed on different orientations and engaged with holes. The hook elements are easy to install, and reduce the risk of disengagement after assembly. The length of the spring is substantially equal to the length of the space in which it is assembled, so that it is not excessively stretched during assembly, thereby preventing spring fatigue. The cushioning pad is integrally formed and includes retainer and insert portions through which it is affixed with the rear leg, and a cushion portion that can absorb noise and vibration when the seat is collapsed.

Abstract: A seat apparatus for a vehicle includes a seat for the vehicle, a seat moving mechanism moving the seat between a seating position and a stowed position, a plurality of engagement members provided at a vehicle floor, a plurality of locking members provided at the seat to face the plurality of engagement members respectively and engaging with the plurality of engagement members to lock the seat at the seating position, and an engagement position adjusting mechanism adjusting a position of at least one of the engagement member and the locking member that face each other in an engaging movement locus direction where the locking member moves to engage with the engagement member.

Abstract: The device is embodied in four variants. The home chair comprises a three-dimensional frame with a seat pivotally connected thereto in such a way that it is tiltable forward and up-and-down, a seat arresting device, a smooth displacement compensator, a reset mechanism embodied in the form of an oil-gas damper and a backrest, the tilt angle with respect to the seat is less than 90° and the distance between the top edge and the seat is less than 250 mm. The school variant is provided with a smooth displacement compensator and a reset mechanism embodied in the form of a spring. The child variant is adjustable in the vertical and horizontal planes, thereby making it possible to select the optimal sitting parameters of a child during the growth thereof, and comprises a seat provided with a tilt angle adjusting unit, a smooth displacement compensator and a reset mechanism.

Abstract: A seat self-lifting device for a portable chair is mounted between a seat frame and a front leg of the portable chair. The seat self-lifting device includes a rotary axle, a spiral spring and a fixing rod. The rotary axle passes through the front leg and connects with a connecting plate mounted on the seat frame. The fixing rod is perpendicularly disposed on the front leg. The spiral spring has a first end connected with the rotary axle and a second end wrapped around the fixing rod. When the seat is deployed, the rotary axle is rotated along a direction and the spiral spring is deformed to accumulate a resilient force. When the user leaves the seat, the resilient force of the spiral spring rotates the rotary axle along a reverse direction for flipping the seat to a collapsed state.

Abstract: A seat assembly for a motor vehicle which includes a locking mechanism is provided. The seat assembly has a base frame mounted to the floor of the vehicle. A seat cushion is pivotally mounted to the base frame for movement between a seated position and a stowed position. A locking mechanism operable to lock the seat cushion in the seated position is mounted to the base frame. The locking mechanism is capable of engaging the seat cushion at an intermediate position between the stowed position and the seated position. Upon engagement of the locking mechanism with the seat cushion at the intermediate position, movement of the seat cushion towards the stowed position is prevented while movement of the seat cushion towards the seated position is unimpeded.

Abstract: A motor vehicle seat having a sitting position and a backrest, which can be converted out of a sitting position into a cargo position in which they are essentially disposed in a common horizontal plane. The seat has a first arresting device for the sitting position of the backrest, a second arresting device for the sitting position of the sitting portion, and a third arresting device. The sitting portion and the backrest are biased into their cargo position, wherein after release of the first arresting device the backrest is pivoted in a direction toward the cargo position, against the third arresting device, and into a stand-by position, as a result of which the second arresting device is released and the sitting portion pivots into the cargo position, as a consequence of which the third arresting device is released and the backrest pivots out of the stand-by position into the cargo position.

Abstract: An actuator configured to actuate a member. The actuator optionally including capabilities for storing and releasing kinetic energy. The actuator being suitable for use in any number of environments, including but not limited to facilitating seat folding operations.

Abstract: A seating arrangement for stadia and the like includes a beam for receiving one or more seats where the seat has a backrest portion fixedly mounted to the beam and a movable seat portion mounted on the beam for pivotable movement about the beam from a generally horizontal seating position to a generally upright non-seating position.

Abstract: According to one embodiment of a seat assembly for a motor vehicle a seat back pivots about a hip axis, a seat bottom pivots about a knee axis, and at least one seat bottom leg is pivots about an ankle axis, so that the seat back folds down against the seat bottom and the seat bottom kneels on the floor to at least partially define a seating load floor. According to another embodiment, a seat bottom and a seat back are articulatable in a forward direction to fold the seat bottom and back down toward a floor of the vehicle to at least partially define a seating load floor.

Abstract: The invention relates to a damping mechanism for folding seats in chairs, having an application in seats (1) incorporated in an articulated assembly by means of shafts (2), with springs (4) which act in the sense that they tilt the seat towards a vertical folded position, incorporating in each shaft (2) an eccentric cam (5) on which there is supported a damping piston which exerts retention action for smoothing the upward rotation of the seat by the action of the springs (4).

Abstract: A seat assembly that is releasably secured to a floor, wherein the seat assembly is released from the floor by simply lifting the handle is provided. The seat assembly includes a latch assembly which releasably engages a platform such as a vehicle floor. The handle is configured to bear the load of the seat, and is also operable to actuate the latch so as to release the seat from the floor by simply lifting the seat by the handle. Thus only one motion is used to remove the seat from the floor. Further the operation of releasing the seat from the floor is inherent as it requires the user to merely lift the seat by the handle.

Abstract: A seat assembly for a motor vehicle which provides easy access to a third row of passenger seating and folds to provide additional cargo space. The seat assembly includes a base frame operatively attached to the floor of the vehicle. A seat back is pivotally coupled to the base frame about a first pivot axis for movement between a seated position, a stowed position, and a folded position. A proximate end of a sub frame is pivotally coupled to the seat back about a second pivot axis for movement between a seated position and a folded position. A seat cushion is pivotally coupled to the sub frame at a third pivot axis for movement between a seated position, a stowed position, and a folded position. A first end of a link member is pivotally coupled to the base frame and a second opposite end of the link member is pivotally coupled to a distal end of the sub frame.

Abstract: A seat assembly for a motor vehicle which includes a locking mechanism is provided. The seat assembly has a base frame mounted to the floor of the vehicle. A seat cushion is pivotally mounted to the base frame for movement between a seated position and a stowed position. A locking mechanism operable to lock the seat cushion in the seated position is mounted to the base frame. The locking mechanism is capable of engaging the seat cushion at an intermediate position between the stowed position and the seated position. Upon engagement of the locking mechanism with the seat cushion at the intermediate position, movement of the seat cushion towards the stowed position is prevented while movement of the seat cushion towards the seated position is unimpeded.

Abstract: The present invention concerns a chair structure (10) comprising a base (1), a seat (13), a connection element (60) for connecting said base (1) to said seat (13), said base being able to be attached in at least one point (P1) to a support plane, first connection means (81) for connecting a first end (80) of said connection element (60) to said base (1), said first connection means (81) being able to rotate with respect to said base to allow said connection element to rotate about a first axis (X) that extends in a direction substantially parallel to said support plane, so that said seat (13) passes between a first operative position (Q1), in which chair structure (10) is that said base (1) is able to rotate with respect to said support plane about a second axis (Y1) that extends in a direction transversal to said support plane, to pass between a first working configuration (C1) and a second entry or exit configuration.

Abstract: A folding seat has a support structure, a backrest and a seat base. The seat base is pivotally mounted on the support structure for pivoting between a seating position with the seat base extending generally horizontally and the backrest generally vertically, a stored position with the base and backrest both extending generally vertically, and a table position with base and backrest both extending generally horizontally. A first over-centre spring biases the seat base towards its generally horizontal position or its generally vertical position depending on the location of the base. Also, a second over-centre spring biases the backrest towards its generally vertical position or its generally horizontal position depending on the location of the backrest.

Abstract: Disclosed is an automatic rotation system for tilting seats of chairs or armchairs, comprising a seat fastener having at least one holder formed by first and second parts rotatably coupled together; first and second conformations respectively attached to the first and second rotatable coupled seat fastener parts; and a spring incorporated between the first and second rotatable coupled seat fastener parts.

Abstract: A chair with a combination back support and cover plate is provided, which solves a burdensome affair that a user consistently holds up a back support folded on a seat until he or she sits on the seat, makes the back support automatically folded on the seat after use of the seat, to thereby enhance convenience of use, and prevents the back support from being unfolded upwards from the state where the back support has been folded on the seat due to wind, to thereby prevent the seat from being polluted due to dust or rainwater.

Abstract: The chair has a seat that folds down about a horizontal axle 24 and which is intended, in particular, to equip halls that receive the public, such as lecture theatres and/or show halls. This chair comprises at least an underframe having an essentially longitudinal axis 14 and to which a backrest 16 may be fixed, and with respect to which a fixed horizontal axle 24 is determined. The seat 20 comprises a first part 32 projecting forwards with respect to the horizontal axle 24, and a second part 30 projecting towards the underframe 12. The underframe 12 contains a gas strut 40, one end 48 of which is fixed to the underframe 12, and the other end 50 of which is fixed to the second part 30 of the seat 20.

Abstract: A seat structure for a vehicle includes front and rear seat bodies each including a seat cushion and a back rest. Each seat cushion has a front part configured to be tipped up about a rear part of the seat cushion. Each back rest has an upper part configured to be tilted backward and forward about a lower part of the back rest. The seat structure also includes first slide rails supporting the front and rear seat bodies in a fore and aft arrangement respectively. The front and rear seat bodies are configured to move backward and forward along the first slide rails. The seat structure further includes a lock member coupled to the front seat body for selectively securing the front seat body relative to the first slide rails. The lock member is movable between a locked position and a released position. The seat structure further includes a push member coupled to the rear seat body.

Abstract: A seat apparatus include: a shaft rotated by a motor and operatively associated with the seat so as to move the seat; a first leg secured to the shaft and pivotably supported by the seat; a first spring, one end of which is fixedly attached to the shaft and an other end of which is fixedly attached to the seat; the first spring which biases the shift in a first direction; and a second spring, one end of which is fixedly attached to the shaft and an other end of which is fixedly attached to the seat, the second spring which biases the shaft in a second direction. The first direction opposes to the second direction.

Abstract: The invention relates to an armchair folding system. According to the invention, the seat (1) and the corresponding armrests (3) are mounted using a tilting hinge system. More specifically, each armrest (3) is mounted to a rotary shaft (4) comprising a spring (5) that is used to raise the armrest (3). Moreover, the side of the armrest (3) is equipped with an angular element (6) on which side panel pins (7) can rest, thereby producing a drag effect in relation to the tilting movement between the seat (1) and each armrest (3).

Abstract: A seat for a vehicle is provided with a sliding device including a slide-lock mechanism, the sliding device sliding a seat body in a case of releasing the slide-lock mechanism, a seatback including a reclining device, the seatback being tilted forward in a case of releasing the reclining device, a seat cushion including a tip-up device, the seat cushion being tipped up in a case of operating the tip-up device and a walk-in mechanism including a lever, the walk-in mechanism configured to release the slide-lock mechanism, release the reclining device and operate the tip-up device in proportion to a shifting length of the lever. The tip-up device is operated in a case where the lever is shifted in an intermediate position and the slide-lock mechanism and the reclining device are released in a case where the lever is shifted in an end position.

Abstract: A chair that can be mounted to a bleacher comprises a dual-pivot structure to enable movement of a seat between an up position, wherein the seat compactly fits within the bleacher envelope, and a down position, wherein the seat is substantially aligned with the bleacher and located at a suitable seating height. The chair includes single-piece, injection molded bleacher bases, which are composed of a “no-break”, fade-resistant plastic and include strategically positioned strengthening ribs. Additional embodiments of the chair comprise a clip-on bleacher base for removably mounting the chair to the bleacher and riser bases and floor bases that can be affixed to a riser portion and a floor portion, respectively, of a step structure.

Abstract: A pivoting seat pew or bench furniture, which utilizes the benefits of theater style seating with the functionality and aesthetic of a traditional pew. This seating assembly provides additional seating capacity over traditional pews offering lower seating costs and lower construction costs. This seating assembly also provides modularized seating components so that the seating assembly can be constructed to any desired length without requiring customized construction or components.

Abstract: A stowable seat assembly is provided for use with a vehicle having a floor and a recess formed therein. The assembly includes a seat and a pivot tube adapted to be secured to the vehicle floor, with the seat being operatively pivotal about the pivot tube between a first, collapsed position and a second, stowed position with the seat being at least partially stowed within the vehicle recess. The seat passes through a third, upright position intermediate the first and second positions as the seat is pivoted between the first and second positions. The assembly further includes a torsion rod mounted on the pivot tube and free to twist, with the torsion rod being operatively coupled to the seat during pivoting of the seat toward and away from the third, upright position.

Abstract: A chair or seat, for use in theaters and/or stadiums, having a back member, a seat member, an armrest construction, a pivot assembly comprising an aperture on an arm or frame of the chair, a pivot member associated with a chair seat, and a bearing member which can act as a bearing for the rotation and a buffer at the extremes of the rotation whilst ultimately retaining the pivot assembly together, and a counterbalance to enable rotation about a pivot point, whereby the rotational movement is controlled. The chairs are made from a moulded plastics material with core recesses to impart substantial rigidity to the chair, and can readily be connected to a surface such as a beam, a riser or a tread via a connection means which is connected to the back of the chair.

Abstract: A stool is provided for placement in a closet and which may be selectively extended or stored away. The stool comprises a horizontal support and a seat rotatably attached to the horizontal support. A first leg is attached to the horizontal support, and a swing arm is rotatably attached to the horizontal support. A second leg is attached to the swing arm at an end opposite from the horizontal support. A mounting flange pivotally connects the horizontal support to a closet partition or wall. The three pivot points (i.e., the seat, the swing arm, and the horizontal support) allow for the stool to be selectively moved between a storage position in which the stool is stored in the closet and a use position.

Abstract: A chair includes a seat portion 1(1B), a seat support 2(2B) supporting the seat portion 1, a rear seat support 3(3B) extending rearwardly upwardly relative to the seat support 2(2B), and a slide mechanism X1 (moving mechanism XB) for causing the seat portion 1(1B) to slide back and forth relative to the seat support 2 (2B). The chair is provided with a locking mechanism 100C for locking the seat portion 6C at a desired position in the fore-and-aft direction selectively, and a lever 110C for operating the locking mechanism 100C, the lever 110C being located at a position allowing the lever 110C to move together with the seat portion 6C in the fore-and-aft direction.

Abstract: An assisted lift shower seat seeking strict compliance with applicable ADA standards includes a wall mounted pivotal shower seat having a frame attached to the wall in a shower by at least two brackets, the shower seat pivotally raised and lowered with the assistance of a stiff torsion spring anchored to the bracket and applying force to the shower seat, diminishing the force required to raise and lower the shower seat from a vertical to horizontal and horizontal to vertical position.

Abstract: A seat with linkage attachable on either side of conventional luggage carts, on both sides, or to the backside, and once the push/pull handle rotates upward, positions itself vertical, for headroom clearance, and simultaneously deploys the seat to horizontal level, for seating, with an extension arm attached to, or part of, the bent projecting arm of the push/pull handle. The seated user's weight transfers directly to the floor by a U-shaped underseat support, preventing the cart from moving, and when the handle is down, for cart movement, the downward rotation retracts the seat up to stowed position with a torsion spring. The seat can be installed on a corner post of the cart structure, manually rotated to level position around the cart's corner, providing seating at either side, or back of the cart, and in stow position rests against cart structure. In all embodiments multiple stacking of carts is allowed.

Abstract: A tip-up seat assembly with a backrest, adapted to be secured to a supporting structure in a generally upright orientation, a corresponding seat member adjacent the backrest, hingedly mounted for rotation between an open position wherein the seat member is substantially horizontal and a folded position wherein the seat member is tilted upwardly toward the backrest, biasing device for biasing the seat member toward the folded position, and a tilt-limiter configured to resiliently restrain the seat member in an intermediate position thereby avoiding inadvertent rotation of the seat member into the folded position.

Abstract: A seat assembly for a vehicle that has a rear seat positioned behind the seat assembly. The seat assembly includes a seat bottom that is movable between a seating position and a forward position. In the seating position, the seat bottom is in a generally horizontal position for supporting an occupant seated on the seat assembly. In the forward position the seat bottom is in a generally vertical position such that a rear edge of the seat bottom is positioned above a front edge of said seat bottom. The seat assembly also has a seat back that is movable between a seating position and a second position. In the seating position the seat back is in a generally lateral position relative to the vehicle for supporting an occupant seated on said seat assembly. In the second position the seat back extends longitudinally relative to the vehicle to permit access to a rear seat positioned behind said seat assembly.

Abstract: A power and data distribution system for use in combination with a beam-mounted seating structure that includes a series of seat assemblies each mounted to a common support beam. The power and data distribution system includes a wireway that is mounted to the support beam and extends along the entire row of seats. The wireway includes a concealed main electrical conduit that extends along the length of the power and data distribution system. The power and data distribution system includes a series of access housings that extend from the wireway, and each access housing includes a pair of electrical outlets and a pair of data outlets. Each of the electrical outlets is coupled to the main electrical conduit contained in the wireway, while each of the data outlets is connected to a data line also passing through the wireway.

Abstract: A chair seat that is movable between an upright and a forward position includes a spring mechanism that biases the seat toward the upright position. The spring mechanism includes camming structures that utilize both compressional and torsional forces from the spring to bias the seat toward the upright position. The compression of the spring exerts a positive force that must be overcome before the seat can be moved out of its upright position. The chair seat is constructed from a number of discrete components that are secured together without the use of welding or separate fasteners, such as via snap-fits. The discrete components include positioning tabs, special shapes, and other features that prevent them from being improperly assembled. The components of the chair seat may all be constructed out of suitable durable plastics, such as polypropylene, polyethylene, polycarbonate, and glass filled thermoplastics.

Abstract: The present invention discloses a pivotal mounting mechanism and a method of mounting an axle in an axle mount. A plug is inserted in a receptacle such as the open end of a tube which has at least one J-shaped track. The axle is held in its final position by inter-engagement of the plug and tube. The mounting mechanism is easily assembled and substantially vandal resistant.

Abstract: A seat is pivotally mounted to a wall by means of at least one hinge assembly, enabling the seat to be folded. The hinge assembly provides an upward and rearward movement as the seat pivots from a horizontal to a vertical orientation during folding. The hinge assembly has a seat mounting bracket mounted to the lower surface of the seat and a wall mounting bracket mounted to the wall. The seat mounting bracket is connected to the wall mounting bracket via a pair of pivoting arms. Each pivoting arm is pivotally connected at one end to the wall mounting bracket and at an opposite end to the seat mounting bracket. The pivot locations are selected such that as the arms pivot in a clockwise direction, the seat mounting bracket pivots in a counterclockwise direction.

Abstract: A chair seat that is movable between an upright and a forward position includes a spring mechanism that biases the seat toward the upright position. The spring mechanism includes camming structures that utilize both compressional and torsional forces from the spring to bias the seat toward the upright position. The compression of the spring exerts a positive force that must be overcome before the seat can be moved out of its upright position. The chair seat is constructed from a number of discrete components that are secured together without the use of welding or separate fasteners, such as via snap-fits. The discrete components include positioning tabs, special shapes, and other features that prevent them from being improperly assembled. The components of the chair seat may all be constructed out of suitable durable plastics, such as polypropylene, polyethylene, polycarbonate, and glass filled thermoplastics.

Abstract: A stackable chair has a frame with a tubular crosspiece, to each end of which a monolithic casting having legs and a backrest support—and, optionally, an armrest—is attached by means of an integral connecting boss received within the crosspiece and held in place by a connector pin. The backrest supports receive a backrest that pivots between an upright position, to which it is biased by a spring mechanism, and a rearwardly tilted position. The range of tilting motion is limited by a stop pin on the backrest and a stop groove in the backrest support. A seat is mounted on the crosspiece, either in a fixed position or for tilting to an upright position. Chairs with tilting seats include seat supports having diametrically opposite slots that receive projecting portions of the connecting pins. The connector pins slidably engage the sides of the slots to hold the seat supports in place on the crosspiece axially.