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| Number | Title | Issue Date |
| 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 |
| 6957864 | Chair with a stopping device A chair includes an upper frame disposed above and pivoted to a lower frame. A stopping device includes a slide mounted slidably on the upper frame, and a stopping member. The slide is slidable between a first position, where the stopping member is offset from a rea... | 10/25/2005 |
| 6935689 | Chair The chair comprises an axis X1 that extends right and left and that connects a seat 6 and a supporting body 3 arranged under the seat 6 in a rotatable manner at a front end portion of the seat frame 4, an axis X2 that connec... | 08/30/2005 |
| 6168233 | Reclinable seating using a torsion bar A four legged or sled chair having a reclinable seat comprising a frame structure, a seat mounted within the frame structure for pivoting about a transverse torsion bar(s) axis, and elastic stops defining said seat position of maximum rearward pivoting an... | 01/02/2001 |
| 5873634 | Modular chair construction and method of assembly A chair construction and method for building a chair having selected features are provided. The construction includes a plurality of interchangeable different components including different base assemblies, back assemblies, seats, arms, and chair controls... | 02/23/1999 |
| 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 |
| 5172955 | Bouncing infant seat reclining between upright position and recline position with distinct resilient element An infant seat having a seating surface positionable between upright and reclined orientations, the seating surface being supported by arms which are connected to torsion springs in a base, the torsion springs providing a bouncing motion to the seating su... | 12/22/1992 |
| 4666121 | Spring-tilt mechanism for a chair or seat The spring-tilt mechanism comprises a support frame (4), a seat portion (1) tiltable on the support frame (4) about a substantially horizontal axis (2) between a first and a second position, e.g. defined by stops (13, 13'). One end (15') of a torsion spri... | 05/19/1987 |
| 4652050 | Chair tilt mechanism A chair tilt mechanism (100) includes a support casting (110) mounted to a chair spindle (104) and a seat casting (130) having a chair seat (102) mounted thereon. A pair of elongated forward links (150) and a pair of triangular shaped rear links (160) are... | 03/24/1987 |
| 4597567 | Adjustable torsion spring A spring for creating adjustable torsional resistance between two members which are pivotal relative to each other. The spring comprises a stack of axially aligned elastomer torsion rings (30). A locking ring (34) is secured to and separates adjacent tors... | 07/01/1986 |
| 4438978 | Tilt back mechanism for a chair The subject invention relates to a tilt back mechanism for resiliently controlling the rearward motion of a chair. More particularly, the subject mechanism includes a planar yoke having upstanding braces formed on the side edges thereof. A rocker plate is... | 03/27/1984 |
| 4235408 | Swivel-chair frame A swinging-seat swivel chair includes a vertical stud that carries a horizontal hollow pin at the end of which are pivoted two supporting arms for a seat. A torsion bar is housed in the interior of the pin with one end coupled to the pin and the other end... | 11/25/1980 |
| 4189179 | Low profile chair iron A low profile chair iron for controlling biased tilting between a seat or backrest and a support uses a substantially flat coil spring of increasingly smaller diameter coils between pivotably connected support bracket and a chair part bracket. Tension adj... | 02/19/1980 |
| 4141530 | Platform rocking chair springs A platform rocking chair is provided by mounting a chair seat to a platform solely by a pair of flat fiber-reinforced springs extending from the sides of the platform to the sides of the chair seat. The rocker blocks employed in many platform rockers are ... | 02/27/1979 |
| 4013258 | Chair control for tiltable chairs This invention discloses a novel and improved chair control for tilting chairs wherein the mechanism which controls the tilting of the chair is simplified and strengthened. It utilizes a bolt having an elongated head of V-shaped cross-section as the biasi... | 03/22/1977 |
