Electromagnetic valve and fluid control apparatus

Details Electromagnetic valve and fluid control apparatus Electromagnetic valve and fluid control apparatus

2005-05-26

2008-10-28

Bastianelli, John (Department: 3753)

Fluid handling

With indicator, register, recorder, alarm or inspection means

Fluid pressure responsive indicator, recorder or alarm

C251S129150

Reexamination Certificate

active

07441562

ABSTRACT:
A stopper formed of a magnetic material and forming a portion of a magnetic circuit has a deformable portion that deforms in accordance with the pressure in a space within a sleeve. The deformable portion is provided with a pressure sensor that measures the amount of deformation of the deformable portion. The deformable portion, corresponding to a diaphragm, is formed in the stopper, which is a conventional electromagnetic valve component part. Therefore, it is no longer necessary to provide a diaphragm or a seal member.

REFERENCES:
patent: 5752489 (1998-05-01), Henderson et al.
patent: 6374679 (2002-04-01), Babala et al.
patent: 6745634 (2004-06-01), Beck et al.
patent: 6772778 (2004-08-01), Morosini et al.
patent: 2002/0047304 (2002-04-01), Bolitho et al.

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