Abstract: An operator chair comprises: a connection portion; a first parallel arm linkage to which an adjustable seat module is connected, the first parallel arm linkage being rotatably connected to the connection portion and to an armrest; a first actuator for driving the first parallel arm linkage between a first position and a second position, and thereby regulating a seat portion of the seat module between a first, substantially horizontal position corresponding to a sitting position of a user, and a second, at least partially vertical position corresponding to an at least partially standing position of the user, respectively; a second parallel arm linkage rotatably connected to the static fundament and to the connection portion; and a second actuator for driving the second parallel arm linkage so as to regulate at least the vertical position of the connection portion relative to the fundament.

Abstract: A device is for holding two or more monitors at an operator chair. The device comprises an arm arrangement adapted to be shifted between different horizontal poses. The arm arrangement comprises a support structure, a first rocker arm, a second rocker arm and a third rocker arm that are rotatably attached at separate locations of the support structure via a respective first pivot, second pivot and third pivot. The support structure is adapted to be attached to or in vicinity of the operator chair. The arm arrangement further comprises a connection arrangement between the first rocker arm, the second rocker arm and the third rocker arm.

Abstract: An operator chair comprises: a connection portion; a first parallel arm linkage to which an adjustable seat module is connected, the first parallel arm linkage being rotatably connected to the connection portion and to an armrest; a first actuator for driving the first parallel arm linkage between a first position and a second position, and thereby regulating a seat portion of the seat module between a first, substantially horizontal position corresponding to a sitting position of a user, and a second, at least partially vertical position corresponding to an at least partially standing position of the user, respectively; a second parallel arm linkage rotatably connected to the static fundament and to the connection portion; and a second actuator for driving the second parallel arm linkage so as to regulate at least the vertical position of the connection portion relative to the fundament.

Abstract: A device is for holding two or more monitors at an operator chair. The device comprises an arm arrangement adapted to be shifted between different horizontal poses. The arm arrangement comprises a support structure, a first rocker arm, a second rocker arm and a third rocker arm that are rotatably attached at separate locations of the support structure via a respective first pivot, second pivot and third pivot. The support structure is adapted to be attached to or in vicinity of the operator chair. The arm arrangement further comprises a connection arrangement between the first rocker arm, the second rocker arm and the third rocker arm.

Abstract: A changeable exhibitor comprising a video or script tape movable on vertical guide rollers in a closed loop, a weighted roller freely movable along a substantially horizontal roller path within the interior space of said loop, a disc on one side of the roller, and projections on the side of the tape facing the roller path, said disc and projections cooperating to advance the tape in response to movement of the weighted roller in one direction along the roller path.

Abstract: A movable device supporting a movable figure having movable arms, comprising a longitudinal path formed by a substantially horizontal upper surface of a portion of the device in the operative position of the device, a roller freely movable along the path under the influence of acceleration and deceleration of said device, said path having means at each end for limiting the movement of said roller, and mechanical linkage connecting said roller and movable members, the path having a slightly upwardly convex curvature whereby the ends are disposed at a slightly lower level than the center portion in the operative position of the device.