Device for producing a wave movement for a mattress of a waterbed comprises a motor-driven plunger moved against a section of the mattress to compress and decompress the mattress section

摘要

Device for producing a wave movement for a mattress (3) of a waterbed comprises a motor-driven plunger (6) moved against a section of the mattress to compress and decompress the mattress section. An Independent claim is also included for a water bed comprising the above device. Preferred Features: The plunger has a striped surface for placing on the mattress. The movement of the plunger is produced by an eccentric drive having a cam (8) and a piston (7) of self-lubricating plastic supported on the cam.