A - Human Necessities – 61 – H
Patent
A - Human Necessities
61
H
A61H 37/00 (2006.01)
Patent
CA 2061842
HYDRO-MASSAGE TUB CONTROL SYSTEM ABSTRACT OF THE DISCLOSURE A control system for hydro-massage tub systems in which water is circulated through a pump and heater from the tub back to a plurality of jets in the tub to create a turbulent massaging action. The system is comprised of an activating device, a pump, a switch activating circuit, a heater with proportional control and a water level sensing safety system. The pump is controlled by a switching and timing circuit that limits the time the pump is on which is slaved to a heater control circuit to prevent operation of the heater unless the pump is circulating waker. The proportional heater control circuit maintains the water temperature within a degree or two of a preset temperature by proportionally reducing power as the temperature approaches the preset limit. The activating device transmits a signal to the switching and timer circuit when a mechanical plunger isolated from electrical circuits is operated. The level sensing device monitors the water level in the tub and interrupts or prevents operation of the switching and timing circuit unless water is at a level which activates the level sensing signal transmission circuit.
Daniels Charles S.
Rist Bruno A.
Daniels Charles S.
Finlayson & Singlehurst
Hydr-O-Dynamic Bath Systems Corporation
Rist Bruno A.
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