Patent application number | Description | Published |
20080252125 | Device for Seat Tilt Adjustment of a Chair - A device is provided for seat tilt adjustment of a chair, in particular an office chair. To provide seat tilt adjustment, which enables a particularly safe and reliable adjustment of the seat tilt, the device encompasses a base support, a seat support connected to the base support by use of a joint as well as an adjustment mechanism, which allows a selectively forward pivot movement of the seat support beyond a substantially horizontal base position. | 10-16-2008 |
20080272638 | Synchronization Mechanism - A synchronization mechanism for a correlated movement of a seat and a backrest of an office chair contains a basic support placeable on a chair post, a seat support and a backrest support. To provide a synchronization mechanism for which an adjustment of a spring tension to change the “tilting resistance” of the backrest is not required, a mechanism is proposed whereby the backrest support that is pivotable around a swivel axis is directly linked in a pivotable manner to the basic support, and to the rear end section of the seat support, such that a backward tilt of the backrest induces a lifting of the rear area of the seat support. The seat support is so linked to the basic support as to cause a lifting of the front area of the seat support when the user of the office chair “lifts” him/herself up by leaning against the backrest. | 11-06-2008 |
20090066134 | Permanent Contact Mechanism - A permanent-contact mechanism for an office chair or the like is formed as a comparatively flat permanent-contact mechanism with a seat frame, which can be positioned on a chair upright, with a backrest support, which is arranged on the seat frame such that it can be pivoted about a transverse axis, and with at least one spring-activated or inherently resilient lever element, which interacts with the backrest support such that the backrest support is always pivoted counter to a spring force. The position of the point of rotation of the lever element differs from the position of the transverse axis. | 03-12-2009 |
20090115235 | Piece of Seating Furniture, in Particular Office Chair - A piece of seating furniture, in particular an office chair, has a backrest with a lumbar support. In order to improve the comfort and ease of use of such a piece of seating furniture, the lumbar support is disposed in a height-adjustable manner on a flexible guide strip. | 05-07-2009 |
20090267394 | Mechanism for an Office Chair - A mechanism for an office chair having a backrest support which may be pivoted rearwardly. Adjustment of the backrest pivotal motion is accomplished by the mechanism having a base support which may be positioned on a chair column, a seat support, the backrest support which may be pivoted to the rear, and a pre-tensioned spring arrangement for enabling the mechanism to counter or oppose the movement of the backrest support. The seat support and the base support form a movable unit, which may be moved relative to the chair column depending on the weight of a user applying a load to the seat support. Movement of the movable unit causes an adjustment of the pre-tension of the spring arrangement and/or an adjustment of the spring constant of the spring arrangement. | 10-29-2009 |
20100289320 | OFFICE CHAIR OR OFFICE CHAIR COMPONENT WITH AN AERIAL TENSIONING ELEMENT - An office chair or office chair element, such as a backrest or seat, has a flat covering element, such as a fabric, cushioning or webbing element, secured to support elements, such as the arms of a support frame, and tensioned in between. The covering element is provided with a welt strip that, in the fitted state, is placed in an accommodating groove in the support element. The accommodating groove has two oppositely situated contact faces for the welt strip and one of the contact faces is provided with a projection that projects into the accommodating groove and extends in the longitudinal direction of the groove. The welt strip can be pressed into the accommodating groove, resiliently deforming the projection and/or the welt strip and the welt strip, in the fitted state, is positively locked and/or friction-locked in the groove with abutment against the contact faces, with the projection preventing the welt strip from escaping from the accommodating groove. | 11-18-2010 |
20100295351 | SYNCHRONOUS MECHANISM - The invention relates to a synchronizing mechanism for a correlated seat-backrest movement of an office chair, said mechanism including a base support ( | 11-25-2010 |
20120175934 | ARMREST, IN PARTICULAR FOR AN OFFICE CHAIR - In order to provide an adjustment mechanism for the arm support of an armrest, which is particularly simple structurally and which also enables a particularly flat style of construction, a locking device is proposed for releasably locking the base platform and the carrier platform in different positions with respect to each other, said locking device comprising a transfer element, which is arranged between carrier platform and arm support and is connected to the base platform and which has first blocking elements for blocking the longitudinal adjustment of the arm support and second blocking elements for blocking the transverse adjustment of the arm support, and an actuating element, which is arranged between carrier platform and arm support and is provided with a control button for manual actuation and which has elements for simultaneously blocking or releasing the first and second blocking elements of the transfer element. | 07-12-2012 |
20120181831 | Mechanism For A Chair - The invention relates to a mechanism ( | 07-19-2012 |
20130033078 | CHAIR WITH A ROCKING MECHANISM - A chair has a rocking mechanism with a fixed base support having a conical receptacle to be placed on a chair pillar. The base support is pivotally connected to a mechanism upper part which forms a housing at least partially enclosing the base support. A pivot axis of the mechanism upper part runs transversely to the chair longitudinal direction and is arranged next to the conical receptacle, as seen in the chair longitudinal direction. A spring element acts between the mechanism upper part and the base support for returning the mechanism upper part from a pivoted position into a starting position. The rocking mechanism is fastened via the mechanism upper part to a seat, a seat support, or a frame of the chair, or else, the rocking mechanism is integrated so that part of the seat, seat support or chair frame forms the mechanism upper part. | 02-07-2013 |
20130320732 | SYNCHRONIZING MECHANISM - An office chair has a base support, a seat support and a backrest support. A synchronizing mechanism for a correlated seat/backrest movement has the seat support articulated directly on a first pivot bearing of the base support, the backrest support articulated directly on a second pivot bearing of the base support, and the backrest support connected to the seat support via an articulation. The articulation axis of the articulation, as seen in the longitudinal direction of the seat, is in front of the pivot axis of the second pivot bearing, such that a pivoting movement of the backrest to the rear about the pivot axis of the second pivot bearing induces a rotation of the seat support about the pivot axis of the first pivot bearing and thus a lifting movement of just the front region of the seat support. | 12-05-2013 |
20140239692 | MECHANISM FOR AN OFFICE CHAIR - A mechanism for an office chair includes an adjusting device and an electromotive drive used to actuate the adjusting device to simplify manipulation of the adjusting device for changing a movement characteristic of the office chair. | 08-28-2014 |