Magnetic flow switch, for aspirators in particular

Details Magnetic flow switch, for aspirators in particular Magnetic flow switch, for aspirators in particular

2006-09-12

2006-09-12

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

C335S205000

Reexamination Certificate

active

07105757

ABSTRACT:
A magnetic flow switch (1) is described that includes a body (2) defining a chamber (20) destined to have a fluid flow pass through it, an excitation magnet (4) placed in a shuttle (3) mounted such that it can slide within the chamber (20) of the body to pass from an initial front position to a final rear position, a Reed switch (6) arranged on the body (2) of the flow switch to detect the magnetic field generated by the displacement of the excitation magnet (4) and to accordingly send a control signal to an electronic control board, and at least one attraction magnet (7) arranged on the body (2) of the flow switch, in a position such as to generate an attraction magnetic field able to attract the excitation magnet (4) to make the shuttle (3) move to the initial front position.

REFERENCES:
patent: 4181835 (1980-01-01), Stadler et al.
patent: 4377090 (1983-03-01), Seulen
patent: 4739135 (1988-04-01), Custer
patent: 4996396 (1991-02-01), Smith
patent: 5070220 (1991-12-01), Glenn
patent: 5478977 (1995-12-01), Beasley
patent: 6344782 (2002-02-01), Yang
patent: 6472624 (2002-10-01), Harris et al.
patent: 0299676 (1989-01-01), None
patent: 2718234 (1995-10-01), None

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