Abstract: Nonrotating vibrator motors are mounted on a rigid member in furniture. Electric power at different frequencies or energy levels is supplied to the respective vibrator motors. Frequency differences in the vibrations result in moving interference waves being produced in the rigid member which waves are imparted to the user of the furniture who experiences a massaging effect. Means are provided for enabling the user to control the frequency differential and amplitudes of the driving currents.

Abstract: Two vibrator motors are removably attached to opposite rail portions of a bed frame or bed rail by clamp arms which project laterally from one side of each motor housing to hold the motor in a position which is offset from the bed springs. The rail-engaging ends of the clamp arms are covered by resilient caps which grip the rail to prevent the clamp arms from being shaken loose by the vibrator motor. The other ends of the clamp arms of each motor are connected to an elongated bracket which is cast as an integral part of the motor housing, and one of the clamp arms is adjustable relative to the other clamp arm.