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| Number | Title | Issue Date |
| 7497516 | Mobile joint with several stable positions, suitable for use in furniture The present invention relates to a mobile joint (1) for a seating construction, especially a chair, for mounting between a seat device and a base, comprising at least two joint elements (10, 30) which are reciprocally restricted pivoted between two ext... | 03/03/2009 |
| 7431397 | Chair A chair has a seat, a center column, a seat support bar joined to the center column, and a mechanism provided for securing the seat with adjustable inclination to the seat support bar and including a toggle lever assembly. ... | 10/07/2008 |
| 7367622 | Tension adjustment mechanism for a chair A tilt control mechanism for an office chair includes a spring assembly therein which controls the tilt tension on the back assembly. This tilt control mechanism includes a tension adjustment assembly having a cam wedge which supports the legs of a pair of coil spri... | 05/06/2008 |
| 7338125 | Rehabilitative and recreational armchair The rehabilitative and recreational armchair constructed of a framework made of tubes, bars and/or other elements, such as flat bars and angle bars, wherein the arms, the backrest and the seat are mounted. The seat is mounted only to the top of the spring whose lowe... | 03/04/2008 |
| 7316453 | Chair spring tension control A tilt mechanism for an office chair includes a spring tension control that incorporates a wedge arrangement including a moveable wedge component that is displaceable laterally by turning a control knob below the seat of the chair, to force fixed wedge components ap... | 01/08/2008 |
| 7293832 | Chair adjustable device A chair adjustable device includes a base with which a seat frame and a backrest frame are respectively and pivotably connected. A positioning mechanism is connected to the base and includes an operation handle which is able to shift a transmission frame and a posit... | 11/13/2007 |
| 7281764 | Tension control mechanism for chair The chair includes seat and back assemblies interconnected in a four-bar linkage. The chair further includes a tension mechanism comprising a coil spring projecting forwardly from a base and an adjustment linkage which is connected to said coil spring and to a front... | 10/16/2007 |
| 7278685 | Recliner A reclining apparatus includes a base, a reclining element and a control element. The base is arranged between a seat and a post of a chair. The reclining element is connected to a backrest of the chair and pivotally installed on the base. The reclining element defi... | 10/09/2007 |
| 7198328 | Locking device for an office chair structure with an articulation permitting the movement of the seat and the seat back and related structures of the chair A locking device in an office chair structure of the type with articulation permitting the movement of the adjustable seat and seat back, with a mobile base from which a column rises, which is adjustable in height, and which supports a seat plane and a hinged seat b... | 04/03/2007 |
| 7156457 | Seat structure Seat structure designed to reduce weight and improve various functions such as impact absorbency, vibration absorbency. A torsion bar arranged along a width direction, and an arm connected to the torsion bar and enforced in a direction of falling backwards in a norm... | 01/02/2007 |
| 7125078 | Device for the adjustment of the compression force of the spring in an articulation for a chair A device for adjusting the compression force of the spring in an articulation of a seat of the type equipped with a mobile “rocket launcher”-type base, from which base there rises a column, adjustable in height, which supports a reciprocally hinged seat plane an... | 10/24/2006 |
| 7036882 | Chair, in particular office chair A chair, in particular office chair, comprises a seat support with a front seat support part and a rear seat support part which is pivotable in relation thereto about a horizontal pivoting axis. An adjustable-length energy storing device, which is articulated to the... | 05/02/2006 |
| 7032972 | Resilient seating structure A seating structure 30 includes spaced housings 34 and 36 between which a seating portion 92 of a platform 60 is located. The platform 60 is also formed with non-seating portions 94a and 94b at op... | 04/25/2006 |
| 7017992 | Chair control device for a tiltable chair A chair control device for a tiltable chair wherein the chair control includes a a one-piece integral structure mainframe housing, including an integral extension for a seat locking cam means, for supporting adjustment mechanisms. The housing is affixed to the under... | 03/28/2006 |
| 7014262 | Support for tilting or synchronized chairs A support for tilting or synchronized chair is provided. The device includes a supporting frame, a mobile frame, an elastic member, a stiffness adjustment mechanism coupled with the elastic member, a locking mechanism for engaging the mobile frame with the supportin... | 03/21/2006 |
| 6957862 | Chair with a seat-inclination adjusting device A chair includes an upper frame disposed above and pivoted to a lower frame. An inclination adjusting device includes a latch mounted slidably on the upper frame and movable between a first position, in which the latch extends into and engages a selected one of enga... | 10/25/2005 |
| 6945603 | Chair, in particular office chair 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. An adjustable length energy storing device serves for adjustment relative to each other of the seat support parts. The energy... | 09/20/2005 |
| 6942295 | Reclining chair system A reclining chair system with a standard assembly supporting seat and backrest assemblies, which are pivotally mounted to each other and capable of providing a rocker effect to a user. A strut assembly provides substantially a bounce free shock absorbing function by... | 09/13/2005 |
| 6929327 | Chair with oscillating seat 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 structu... | 08/16/2005 |
| 6921134 | Apparatus for adjusting inclination of chair backs An apparatus for adjusting the inclination of a chair back is disposed on the chassis at the bottom of a cushion and pivotally coupled to the middle of a base at the upper end of chair legs. A control rod has its middle predetermined position pivotally coupled to th... | 07/26/2005 |
| 6783180 | Chair tilt lock mechanism This invention is an improved tilt lock device for chairs having a spindle and piston for raising and lowering the chair. The improvement consists of a pawl plate for engagement with the piston where the pawl plate is integral with a locking shaft that extends from ... | 08/31/2004 |
| 6607244 | Reclining chair A reclining chair including a support base, a chair seat rotatably coupled at its forward portion to the support base, a substantially vertically disposed coil spring provided adjacent the forward portion of the seat and between the seat and the support b... | 08/19/2003 |
| 6276755 | Swivel arrangement for a chair seat A swivel arrangement is provided for a chair having a backrest, a chair seat, a chassis, and a base. The chassis includes a swivel seat mounted to an underside of the chair seat, a first connecting seat, a second connecting seat, a spring seat, a control ... | 08/21/2001 |
| 6257666 | Office chair An office chair with a pedestal (14) and, attached thereto, a seat carrier (13) that carries a seat element (10) and that can be shifted with relation to the pedestal (14) out of an initial position (a) against the restoring spring force along a guide tra... | 07/10/2001 |
| 6213552 | Multi-position chair control mechanism for synchronously adjusting the seat and backrest of a chair A seat adjustment mechanism for a chair includes a first handle which controls the height of the seat above a surface supporting the chair. A second handle allows the user to selectively lock the seat at a user selected angle relative to the supporting su... | 04/10/2001 |
| 6131996 | Seat carrier for chairs A seat platform carrier for a chair tilts backward and forward relative to a base part when a load, such as a person sitting is the chair, is placed on the seat carrier. A resetting mechanism positioned the seat platform carrier to the same initial positi... | 10/17/2000 |
| 6033020 | Rocking apparatus A rocking apparatus has a supported member and a supporting member. The supported member rotatably supported on the supporting member at two distant points on a rotary shaft. The rotary shaft is provided with a reaction force imparting member, which is co... | 03/07/2000 |
| 5918935 | Reclining chair A reclining chair including a support base, a chair seat rotatably coupled at its forward portion to the support base, a substantially vertically disposed coil spring provided adjacent the forward portion of the seat and between the seat and the support b... | 07/06/1999 |
| 5681085 | Rocking armchair with reclining seat and back A armchair which is formed by a reclining seat and back and supported by a rectangular shaped structure. The rectangularly shaped structure has lower legs placed on the ground from which the seat and back of the armchair extend upwardly. A pair of arcuate... | 10/28/1997 |
| 5577802 | Adjustable chair A chair comprises a base with a fixed stem extending vertically from the base and a track member mounted to the top of the stem. The track member is a segment of a circle, the center of which is forward of the chair and coincident with either the knee or ... | 11/26/1996 |
| 5524967 | Active dynamic seat An active dynamic seat has a base, an intermediate piece linked to the base and a seating part linked to the intermediate piece. The seating part is fixed to the intermediate piece and the intermediate piece is linked to the base by a single bearing in a ... | 06/11/1996 |
| 5490715 | Arrangement in a chair The present invention relates to an arrangement in a chair, which for the object of giving the chair (1) a floating or heaving property is specific in that the chair (1) comprises one or more resilient elements (5a-5d) rendering the chair (1) freedom of m... | 02/13/1996 |
| 5464274 | Chair seat tilt adjustment and locking mechanism A chair tilt control mechanism for a pedestal base chair having a chair control housing mounted on the pedestal chair base and pivotally supporting a chair seat support member. A laterally movable front stop member retained within the chair control housin... | 11/07/1995 |
| 5462336 | Office chair having a support member for shiftably supporting a seat An office chair comprises a column projecting from a pedestal, a seat, a back rest and a bracket projecting from the upper end of the column forwards. The seat is supported by the front end of the bracket in a first transverse pivot axis. A support member... | 10/31/1995 |
| 5375912 | Reclining chair A reclining chair including a support base, a chair having seat and back portions integrally formed, a lever arm fixed to and extending from a bottom and forward portion of the seat portion, a means for pivotally coupling the forward portion of the seat p... | 12/27/1994 |
| 5294178 | Tilt device for seat furniture In a tilt device for seat furniture, the base, which is fastened to the chair bottom part and which carries a rotatable backrest carrier for the backrest and a seat plate for the seat, is designed as a closed carrier box composed of a plurality of sheet-m... | 03/15/1994 |
| 5280998 | Mechanical device, particularly for the movement and selective locking of a chair A mechanical device for the movement and selective locking of a chair and for controlling a gas piston. The mechanical device comprises a first arm and a second arm spaced apart from the first arm which are connectable to the chair. A pivoting pin extends... | 01/25/1994 |
| 5259663 | Chair seat mounting mechanism A chair seat mounting mechanism includes a stationary base member adapted to be mounted on a chair base, a seat-mounting member that is adapted to be attached to a chair seat and is rotatably attached to the base member by a pivot shaft and springs acting... | 11/09/1993 |
| 5249838 | Seating device having curved bottom tilting on roller and secured by reeved cable A narrow seating device or chair including a support caddy having lockable ground engaging caster wheels and a seat portion for a patient undergoing a medical test. The seat portion is detachably mounted on the support caddy and tiltable to a plurality of... | 10/05/1993 |
| 5207479 | Chair control mechanism The present invention is an office chair capable of dynamically tilting to provide a desired seat inclination from an upright position to a maximum tilted position. The preloading mechanism of the spring includes an adjusting screw and a tension arm which... | 05/04/1993 |
