Importance

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Abstract

An adjustable headrest includes a base supporting a crescent-shaped pad. The bottom side of the base is equipped with two triangular support structures, each of which includes a long arm and a short arm pivotally attached to distal and proximal junction structures, respectively, on the bottom side of the base. The other end of the arms are commonly and pivotally connected to a horizontal rod, one end of which is equipped with a cam lever capable of jointly controlling the lock and release status of two clamps, each of which is associated with one of the support structures. In each triangular support structure, one of the arms has an adjustable effective length. The cam lever is movable between a lock-position and a release-position. When the lever is in the lock position, the clamp prevents all rotational movement of both rectangular support structures about the horizontal rod, and prevents any adjustment of the effective length of the arms. The headrest support assembly allows height and angle adjustment of the headrest relative to a stationary table or chair by manipulating only a single clamp.

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First Claim