Quotables
"Telephone, n. An invention of the devil which abrogates some of the advantages of making a disagreeable person keep his distance. "
Ambose Bierce
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7819473 | Chair A chair is provided that is designed so that the angle of the seat surface portion and the angle of the back surface portion are independent of each other and change, and a user can always take the optimum seated posture. The chair includes a base portion, a first l... | 10/26/2010 |
| 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 |
| 7360835 | Seating with comfort surface A chair includes a base, a seat, a back, and a control operably supporting the seat and back on the base for movement between upright and recline positions. The seat and back include a stiff perimeter frame with opposing perimeter sections, and a plurality of rods e... | 04/22/2008 |
| 7325873 | Seating unit A seating unit comprising a base configured to be positioned on a floor, a torsional energy unit connected to the base, a back connected to the torsional energy unit and a seat rotatably connected to the torsional energy unit. The torsional energy unit biases the ba... | 02/05/2008 |
| 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 |
| 7246683 | Tree stand with back support A tree stand for hunting includes a frame constructed to stably engage a tree trunk in an elevated position, a seat pivoted to the frame, and a back support pivotally supported by a link mechanism to a telescoping upright of the frame above the seat. Vertical and an... | 07/24/2007 |
| 7243993 | Tilting mechanism for a chair and a chair having the same A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When th... | 07/17/2007 |
| 7240963 | Hand rail assembly incorporating articulating seats A security handrail system having a plurality of vertical post members securable in a vertical orientation to a stratum, the vertical post members intersected by a plurality of horizontal cross members, there being articulatingly secured between adjacent vertical po... | 07/10/2007 |
| 7237841 | Back construction with flexible lumbar A back construction includes a back shell mounted on a back frame at top and bottom connections, and a flexible lumbar section biased forwardly by a biasing device. The bottom connection is located rearward of the back shell to allow unencumbered sliding entry into ... | 07/03/2007 |
| 7147282 | Chair with backrest depth adjustment mechanism A backrest depth adjustment mechanism which allows adjustment of the backrest assembly in a front-to-back manner with respect to the seat. The backrest assembly generally includes a backrest frame supporting the backrest. The backrest frame includes opposite end por... | 12/12/2006 |
| 7147286 | Versatile chair A versatile chair having a back assembly, a seat assembly and a leg assembly. Two brackets are formed on the leg assembly and create an axis of rotation for the back assembly and for the seat assembly independent of the back assembly. The back assembly rotates due t... | 12/12/2006 |
| 7097249 | Tilting mechanism for a chair and chair having the same A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When th... | 08/29/2006 |
| 7066538 | Chair with tilt lock mechanism A tiltable chair is provided with a tilt lock mechanism that can be activated when the chair is at any tilt position, the tilt lock mechanism engaging and locking the chair when the chair moves into the upright, neutral position. ... | 06/27/2006 |
| 7021712 | Chair with flexible, resilient back support A chair with a flexible resilient back support structure includes a hollow tubular seat frame, a hollow tubular backrest frame pivotally connected to the seat frame, and a limit stop affixed to the backrest frame or the seat frame adjacent to the pivot points. The l... | 04/04/2006 |
| 6932431 | Chair having novel tilt control mechanism A chair having a chair seat and a chair back includes a means for controlling the tilt of the chair back relative to the chair seat, the tilt means comprising a control body mounted beneath the chair seat and a pivot body pivotably mounted beneath the control body. ... | 08/23/2005 |
| 6779847 | Multi-task mid-pivot chair control mechanism A chair control mechanism for positioning between the seat and seat support of a chair. The chair control mechanism includes a base section for mounting to a seat support such as an adjustable height cylinder, and a seat mounting section pivotally interconnected wit... | 08/24/2004 |
| 6761406 | Chair fitted with an upholstery member In a chair 1 having an upholstery member 7 fitted on a backrest portion or seat plate 4 serving as a portion adapted to contact a human body, upright portions 41 and elastic pieces 8 allowing their deflection in the direction in wh... | 07/13/2004 |
| 6739664 | Chair A chair 1 allowing a person sitting thereon to move a part of the person's body above the waist which corresponds to the backrest of the chair is provided having a backrest portion located behind a seat portion, the backrest portion being divided into backres... | 05/25/2004 |
| 6672669 | Swingable chair back with top pivot A chair having a swingable chair back with a top pivot includes a frame having laterally spaced first and second uprights. A back having upper and lower ends is attached to the frame. Also attached to the frame adjacent the lower end of the back is a seat... | 01/06/2004 |
| 6659554 | Adjustment device of a chair backrest An adjustment device of a chair backrest includes a fixed member a movable member and a fixing spanner. The fixed member is fixed to a bottom of a seat of a chair. The movable member is pivoted to the fixed member, and a support rod of the backrest is con... | 12/09/2003 |
| 6631954 | Vehicle seat including a pivoting back urged forwards by a torsion bar A vehicle seat has a back mounted to pivot on a seat proper by a locking mechanism, and urged forwards by a torsion bar formed by a metal wire which has two ends fixed respectively to the back and to the seat proper. The metal wire constituting the torsio... | 10/14/2003 |
| 6612652 | Theater seat assembly A theater seat assembly includes a pair of opposed stanchions for attachment to a support surface, a generally horizontal seat portion disposed between and operatively connected to the stanchions, and a generally upright back portion disposed between and ... | 09/02/2003 |
| 6598936 | Multi-task mid-pivot chair control mechanism A chair control mechanism for positioning between the seat and seat support of a chair. The chair control mechanism includes a base section for mounting to a seat support such as an adjustable height cylinder, and a seat mounting section pivotably interco... | 07/29/2003 |
| 6585320 | Tilt control mechanism for a tilt back chair An improved tilt rate control mechanism for a tilt back chair has an adjustable torsion spring, a tilt rate adjustment actuator and an actuator movement mechanism. The torsion spring has an adjustment lever for adjusting the tension on the torsion spring.... | 07/01/2003 |
| 6536841 | Synchrotilt chair A synchrotilt chair includes a base, a back, a seat, and a link(s) pivoted to a rear of the base and to a bottom of the back to form a four-bar linkage arrangement. A spring arrangement includes a resilient member at one of the joints of each link to bias... | 03/25/2003 |
| 6533352 | Chair with reclining back rest A chair having a seat and a back rest. The back rest is attached to the seat via a back rest support element. The flat spring can be made from a non-metallic material, such as from fiberglass. The back rest support element comprises a flat spring disposed... | 03/18/2003 |
| 6523896 | Chair A chair is provided comprising a seating platform having a front edge and a back edge, a seat carrier that carries the seating platform and is connected to one of a central chair column and a plurality of chair legs, a rest carrier that proceeds toward th... | 02/25/2003 |
| 6494537 | Chair mechanism Chair mechanism especially for office chairs and larger arm chairs, characterized in one end of a torsion spring (1); being fixedly connected with one end of an inner pipe (3) being turnably supported in a pipe (4), the other end being supported turnably ... | 12/17/2002 |
| 6406096 | Seat spring system A chair including a seat assembly having an improved seat spring system to provide a flexible spring backrest frame. A pair of ends of spaced apart backrest frame members are arranged in registry with respective ends of seat support frame members, with ea... | 06/18/2002 |
| 6220664 | Base structure for chair seat A base structure for a chair seat includes a base mounted to an underside of the chair seat. Two lateral walls of the base include aligned vertical slots. A first pin is slidably extended through the aligned vertical slots. One of the lateral walls includ... | 04/24/2001 |
| 6155645 | Rest chair A rest chair comprises the following features: a seat portion is hingedly supported at a foot portion about a horizontal axis; at the seat portion a foot rest is hingedly linked around a horizontal axis from a position folded under the seat portion into a... | 12/05/2000 |
| 6065803 | Seat back tilt control apparatus A tilt control apparatus is provided for use on a chair having a base and a backrest, and includes a center retainer from which a pair of torsion bar segments protrude. A tubular outer casing is received over each torsion bar segment and is affixed to the... | 05/23/2000 |
| 6003943 | Multi-function control for chair A chair includes a seat, a base including a housing, and a reclineable back pivoted to the housing. The chair further includes a pneumatic system having a valve actuateable to adjust a height of the seat with respect to the base, a cam for blocking the de... | 12/21/1999 |
| 5975634 | Chair including novel back construction A chair is provided having a base assembly, a back assembly pivoted to the base assembly for movement between upright and reclined positions, and a seat slidably supported on the base assembly and pivoted to the back frame so that the seat moves forwardly... | 11/02/1999 |
| 5915788 | Multi-function control for chair A chair includes a seat, a base including a housing, and a reclineable back pivoted to the housing. The chair further includes a pneumatic system having a valve actuateable to adjust a height of the seat with respect to the base, a cam for blocking the de... | 06/29/1999 |
| 5806931 | Method for inclining the backrest of a chair, and chair having an inclinable backrest The device relates to a method for inclining the backrest of a chair, and a chair having an inclinable backrest, the structure of which is simplified to ensure easy inclination of the backrest and easy adjustment of the inclination force (locking force). ... | 09/15/1998 |
| 5658045 | Chair with adjustable seat and backrest Chair (1) with tilt mechanism for synchronous adjustment of a seat (4) and a backrest (6) which are swivel mounted on a base (8), from a normal working position in which the seat (4) assumes a horizontal position and the backrest (6) a vertical position, ... | 08/19/1997 |
| 5601335 | Auditorium seating system A seating assembly, such as for use in auditorium seating, includes a pair of spaced frame assemblies and a seat and back, each of which is mounted between the frame assemblies. The seat assembly is mounted to the frame assemblies by means of an internal ... | 02/11/1997 |
| 5580127 | Chair with tilting backrest In a chair having a backrest which can be reclined backwardly against the action of spring means, the latter comprises a leaf spring having its central portion operatively connected to the base structure of the chair and its ends connected to two side arm... | 12/03/1996 |
| 5524966 | Folding chair with tilting backrest A folding chair is provided with three structures respectively defining the front legs, the rear legs and the seat which are reciprocally articulated around a common axis. The backrest of the chair forms part of a fourth structure separate from said three... | 06/11/1996 |
