Automatic sampling device

Details Automatic sampling device Automatic sampling device

1984-01-06

1989-03-07

Rivell, John

Fluid handling

Systems

Multi-way valve unit

25112913, F16K 3104

Patent

active

048097489

ABSTRACT:
The invention provides a multiposition rotary liquid sampling valve wherein a plurality of inlets are linked one at a time to a common outlet via a rotor, which comprises an electric motor for turning the rotor, means for applying power to the motor, means for sensing the position of the rotor and means, connected to the sensing means, for immediately stopping the motor when the rotor reaches a desired position by disconnecting the power applied to the motor and simultaneously applying a braking action to the motor.

REFERENCES:
patent: 2573297 (1951-10-01), Atkinson
patent: 3000398 (1961-09-01), Link
patent: 3008490 (1961-11-01), Angelos
patent: 3914676 (1975-10-01), Madonian et al.
patent: 4139355 (1979-02-01), Turner et al.
patent: 4156437 (1979-05-01), Chivens et al.
patent: 4185770 (1980-01-01), Nagel
patent: 4299251 (1981-11-01), Dugas
patent: 4310022 (1982-01-01), Cohen
patent: 4350429 (1982-09-01), Slavin
patent: 4428511 (1984-01-01), Howell

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