Electricity: motive power systems – Motor-reversing
Patent
1998-03-10
1999-10-12
Nappi, Robert E.
Electricity: motive power systems
Motor-reversing
318283, 212307, H02P 100
Patent
active
059659947
ABSTRACT:
Disclosed are automatic vertical moving systems and control methods therefor for regularly lowering an object with predetermined depth and time intervals to a desired maximum depth in water and then raising it to the surface of water to analyze vertical changes of water quality in lakes and reservoirs continuously, comprising a barge for floating on the surface of the water so as to be retained at a desired position thereon, a winch mounted on the barge, rotatable in opposite directions to lower and raise the object and provided with a wire rope wound and rewound around the winch according to the rotational directions, the wire rope being connected at its free end to the object, an electric motor connected to the winch for rotating in opposite directions, and a motor controller for controlling the motor to be regularly activated and deactivated and to be changed in rotational directions thereof. Also, an assistant line may be further included to prevent entanglement of the wire rope and possible loss of the object due to external impact of unusual matters in water.
REFERENCES:
patent: 3871527 (1975-03-01), Schimmeyer
patent: 3965404 (1976-06-01), Petersen
patent: 4155538 (1979-05-01), Claassen
patent: 4354608 (1982-10-01), Wudtke
patent: 5542811 (1996-08-01), Vartanian
Duda Rina I.
Nappi Robert E.
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