Importance

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Abstract

A bed base having first and second members which are of generally U-shaped configuration so as to slidably telescope together to permit expansion or contraction of the bed base in the lengthwise direction. Locking mechanism coacts between the telescoping legs to lock the bed base in the selected expanded or contracted position. A sheet-like cover is anchored at one end of the bed base and extends over the upper surface thereof toward the other end, at which point an intermediate part of the cover wraps downwardly around a guide drum. The lower free end of the cover is connected to a compensating mechanism which adjusts cover length. A drive mechanism is mounted adjacent one end of the bed base and includes elongate drive screws which extend along the legs of one base member. A roller massaging unit is positioned beneath the cover and extends transversely between the legs and is coupled to the drive screw so as to be movable in the lengthwise direction of the bed base. Limit switches provided on the base members adjustably control cyclic back-and-forth movement of the massage unit in correspondence to the adjusted length of the bed base.

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First Claim