Chair with a sliding and swiveling device

Abstract

A chair having sliding and swiveling device, mounted on a stationary post for adjustment. A slide plate supports the chair and a lower surface has a longitudinally extending roller channel, in which a plurality of rollers of a holder are provided to support the slide plate so that the slide plate is longitudinally slideable. The holder swivels on the post. A first lock releasably locks the holder against swiveling; and a second lock releasably locks the slide plate against sliding. A lock controller, including a handle, controls both locks, wherein rotating of the handle in a one direction locks the holder against swiveling, and rotating in an opposite direction locks the slide plate against sliding. The handle extends and retracts toward and away from the post. When the chair has a horizontal seat with a front portion that is pivotable upward if the chair is unused, the slide plate supports a rear portion of the seat on the upper surface of a support portion of the plate, and the lower surface has two roller channels to receive the rollers of the holder. The lock controller includes an elongated control member for coupling the handle to the locks, so that by rotating the handle the control member is rotated to control the locks. The control member is extendible to bring the handle from beneath the rear seat portion to a forward end of the seat, for convenient access.