Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1987-07-06
1989-08-15
Pal, Asok
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
4622, 4623, 4507, 4541, 1510405, 15104061, 1510431, 134 221, 134 251, 134 254, 134 2218, 137391, 137392, B08B 302
Patent
active
048571121
ABSTRACT:
The present invention relates to a method of cleaning a pipe system (3) in baths, preferably bath tubs, through which pipe system water and/or air is led into the bath-water (6) of the bath (1) to produce water currents and/or water/air currents (4) and/or air bubbles (5) therein. For effective cleaning, the pipe system (3) is flushed with pure water (31) after a bath has been taken before impurities in said pipe system have/had time to dry. A suitable apparatus for carrying out said method comprises a sensor (49) which is adapted to sense when bathing in the bath (1) has been concluded and to deliver when the bathing has been concluded a signal to a time lag relay (34) which is adapted to open a valve (33) for supply of flushing water (31) to a flushing device (30) for flushing of the pipe system (3) a certain time after the time lag relay (34) has received said signal from the sensor (49).
REFERENCES:
patent: 3809116 (1974-05-01), Sanner
patent: 4380091 (1983-04-01), Lively
PCT/US84/014, Sep. 26, 1984.
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