Apparatus for measuring the mechanical motion of a magnet valve

Details Apparatus for measuring the mechanical motion of a magnet valve Apparatus for measuring the mechanical motion of a magnet valve

1992-12-23

1994-05-17

Rosenthal, Arnold

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

2511291, 25112904, 123506, F16K 3106

Patent

active

053119037

ABSTRACT:
The invention is directed to a magnet valve having a magnet coil and a magnet armature, which are coaxially surrounded by a secondary coil that measures the inductions arriving in the magnet coil. According to the invention, those inductions that arise in the magnet coil not only from a current flowing there but also by the motion of the magnet armature in the magnet coil are measured while the current is turned off. As a result, the instant at which the magnet armature begins its return stroke is detected exactly.

REFERENCES:
patent: 3415487 (1968-12-01), Robarge
patent: 4065096 (1977-12-01), Frantz et al.
patent: 4342331 (1982-08-01), Bartholdmaus
patent: 4546749 (1985-10-01), Igashira et al.
patent: 5009389 (1991-04-01), Kawamura

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