E - Fixed Constructions – 04 – H
Patent
E - Fixed Constructions
04
H
15/14
E04H 3/20 (1980.01)
Patent
CA 1090513
ABSTRACT The invention comprises a simple compact automatically operating apparatus for cleaning swimming pools in a stepwise movement over the pool walls comprising a balanced operating head having an inlet and an outlet, the outlet adapted to be swivelably connected to a longitudinally resilient and flexible suction hose. The inlet axis is inclined at an angle of between thirty degrees and sixty degrees to that of the outlet. A passage extends through the head from inlet to outlet, and an oscillatable valve in the head is adapted to alternately open and close said passage. A baffle plate is placed in the head between the inlet and valve to form a restricted suction connection between inlet and outlet around the valve when the passage is closed, the connection being as restricted as practi- cally commensurate with proper valve movement, and the valve is shaped so that liquid flow through the passages will cause automatic oscillation thereof between terminal positions in each of which one of the passages through the head is closed.
315604
Hofmann Helmut J.
Swabey Ogilvy Renault
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