Voko Franz Vogt & Co.

Klober Gmbh

Sdm Hansen Ag

Ahrend-cirkel B.v.

Provenda Marketing Ag

Sitag Ag

Eckhard Hansen

Robert Vonhausen

Rainer Machate

Stefan Preisig

Arm support for a chair comprising an upright stand ( ) fixed to the chair and having an upper end which supports the arm support ( ), said arm support ( ) being movable on a substantially horizontal plane and possibly turnable around a vertical axis. The arm support ( ) comprises a first guide plate ( ) provided with guide openings ( ) arranged on the rims and running along the longitudinal direction of the arm support, in which sliders ( ) coupling geometrically the guide openings ( ) are present, said sliders ( ) being tightly connected to a second guide plate ( ), the length of the second guide plate ( ) along the shift direction being smaller than the length of the first guide plate and the second guide plate ( ).

Arm support for a chair

Office chair

A reclining chair is provided comprising a seat (2) comprised of a rigid supporting shell (7), a back rest (3) freely displaceable in orientation in relation to said seat (2), a rigid seat support (18,9) including at a forward end of the seat a stationary pivot axis (8) where said rigid supporting shell (7) is attached to said rigid seat support (18,9) and about which pivot axis said seat can pivot rearwardly into a reclining position, at least one back stay bar (11), one end (12) of said back stay bar being fixed to said seat support (18,9), and an opposing end (16) of said back stay bar being connected to said back rest (3), and said seat shell (7) including a slide bearing (20), a portion of said back stay (11) being slidably supported on said slide bearing (20), said slide bearing providing positive guidance between the seat shell and the back stay such that when said seat shell reclines over an angle .beta. the back rest reclines over an angle .alpha. which is substantially greater than angle .beta..

Point-synchronized adjustment device for office chairs

A chair having a seat member rotatably supported about a swivel point in the region of its front edge relative to a seat carrier. The chair also has a back member connected to at least one lever which is pivotally supported on the seat carrier. The lever is connected so that in the case of an inclination of the back member there simultaneously occurs in a predetermined relationship an inclination of the seat member so that the area of the seat back in the region of the user's lumbar vertebra is changed in such a way that the support is at an optimum during each inclined position of the seat back. A control member is hingedly connected at one end to the back member below the point of its engagement with the lever. The control member is hingedly connected to the seat carrier or to the seat at its other end in a first pivot axle spaced from a second pivot axle of the lever on the seat carrier. The lever and the control member are hingedly connected with one another by means of a connecting element, so that a relative movement between the lever and the control member in the coupling point or between the control member and its connecting point on the seat carrier or on the seat can occur.

Chair

Growing community of inventors

St. Margrethen, Switzerland

Eckhard Hansen