clipped from: syndicate.patentdata.com   
Stiff muscles often require massaging to relieve tension and ease cramping caused by muscle fatigue. While tennis balls are frequently used as rudimentary tools they are ineffective to massage the rear neck, trapezium and shoulder muscles, which need downward pressure applied by a second person.

This self-massaging apparatus has a L-shaped extension piece that is fixed to a base plate, while the opposite end contains a threaded opening in which a metal ball is screwed fast. The distal end has a downward facing perpendicular arm with a threaded opening to which a second ball may be attached.

The apparatus is provided with a wall-mounting bracke

a person may lean backwards against the extension piece and use the attached ball to massage

upper back and neck muscles

For pressure point massaging of sore shoulders the downward facing ball of the perpendicular arm may be used. Different sized balls that are screwed fixed to storage holes on the extension piece may act as substitutes