Electricity: circuit makers and breakers – Fluid pressure – Flow-responsive type
Patent
1987-12-09
1989-05-02
Tolin, Gerald P.
Electricity: circuit makers and breakers
Fluid pressure
Flow-responsive type
7386174, 340610, H01H 3540
Patent
active
048270920
ABSTRACT:
A flow meter or monitor arranged on a conduit section through which a medium to be monitored flows includes an actuating element extending through an opening in a wall of the conduit section, with a flow pressure plate of the actuating element positioned in the flow path of the medium. The actuating element is mounted on a support plate and is deflectable against the force of a spring with a deflectable outer end projecting into a housing positioned outwardly of the opening in the conduit section. The housing may be detached from the conduit section. The end of the actuating element projecting into the housing is equipped with a permanent magnet to operate a reed contact switch to be in an electrical circuit when the actuating element is deflected. The switch is surrounded by a protective cover and is accommodated in a through-hole in the housing. The support plate can be detached and inserted into a recess of the housing and is prevented from rotation with respect to the housing.
REFERENCES:
patent: 2600309 (1952-06-01), MacDonald
patent: 2943486 (1960-07-01), Osgood
patent: 3368045 (1968-02-01), Huper
patent: 4074097 (1978-02-01), Hutchinson
patent: 4282413 (1981-08-01), Simons
patent: 4377090 (1983-03-01), Seulen
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