Patent ID: 6038712
Filing Date: 2000-03-21
Classification: A61H

Abstract:
A suction assembly connected through an aperture in a wall of a whirlpool bath or spa tub below the water in the tub and connected to an inlet of a pump used for recirculating the water and propelling the water through a plurality of whirlpool bath jets; the assembly comprising:a face on the inside of the tub wall, the face having a plurality of apertures through which the recirculated water flows into the assembly and into the inlet;a body on the outside of the tub wall and connected to said face through said aperture, said body having a main chamber connected to said inlet and an elongated induction chamber open to ambient through an induction tube extended toward the top of the tub;said face further abutting a face tube extending through said tub wall aperture, exterior of said tub in overlapping coaxial relation to said induction chamber and forming a bleed path therebetween, whereby pressure in said face tube forming a column of water in said induction tube during normal operation of said suction assembly and whereby blockage of said face reduces said pressure and empties said column of water thereby permitting air to enter said pump inlet and cease said circulation;said face tube and said induction chamber comprising a pair of coaxial overlapping concentric tubes said face tube being spring-biased to abut said face.