Liquid purification or separation – With alarm – indicator – register – recorder – signal or...
Patent
1995-04-17
1996-10-29
Drodge, Joseph W.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
15 17, 15319, 210 94, 210143, 210169, 2104162, B01D 3380, B01D 3502
Patent
active
055693717
ABSTRACT:
An underwater navigation and control system for a swimming pool cleaning robot, having a driver, an impeller, a filter and a processor for controlling the driver and a signal-producing circuit. The system further includes a signal-detecting circuit mounted on the pool, an interface located on the ground in proximity to the pool and comprising a detector for receiving and processing data from the detecting circuit and for transmitting signals to the robot's processor. Determination of the actual robot location is performed by triangulation in which the stationary triangulation base is defined by at least two spaced-apart signal detectors and the mobile triangle apex is constituted by the signal-producing circuit carried by the robot.
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patent: 5028321 (1991-07-01), Stone et al.
patent: 5086535 (1992-02-01), Grossmeyer et al.
patent: 5093949 (1992-03-01), Sloan
patent: 5256207 (1993-10-01), Sommer
patent: 5435031 (1995-07-01), Minami et al.
Drodge Joseph W.
Maytronics Ltd.
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