Measuring and testing – Volume or rate of flow – Using rotating member with particular electrical output or...
Reexamination Certificate
2011-02-22
2011-02-22
Thompson, Jewel (Department: 2855)
Measuring and testing
Volume or rate of flow
Using rotating member with particular electrical output or...
Reexamination Certificate
active
07891257
ABSTRACT:
A monitoring device including first detector means of a flow rate of operative fluid in an electric household appliance towards a tank of the electric household appliance and second detector means of the level of such a fluid in the tank; wherein the first and second detector means are operatively and reciprocally associated to issue a single signal (S) characterised by at least two different parameters, a first parameter (F) correlated to the flow rate of the fluid and a second parameter (A) correlated to the level of fluid in the tank. Typically, the first and the second detector means consist of a turbine mounted so as to be crossed in use by the flow of operative fluid and thereby turned at a speed proportional to the flow rate of fluid; in a membrane mounted within a casing to fluid-tightly divide the same into a first and second chamber connected respectively to atmospheric pressure and to siphon means arranged within the tank; in sensor means mounted on the membrane integral with the same and in interaction means with the sensor means, angularly and integrally mounted on the turbine and in a position so as to periodically transit in use in front of the sensor means in consequence of the rotation of the turbine.
REFERENCES:
patent: 6212959 (2001-04-01), Perkins
patent: 7449647 (2008-11-01), Kranjc
patent: 2007/0295104 (2007-12-01), Ellegood
patent: 4444167 (1995-07-01), None
patent: 1726702 (2006-11-01), None
ISR for PC/IB2007/003869 dated Jun. 2, 2008.
ITW Industrial Components S.r.l. con Unico Socio
Lowe Hauptman & Ham & Berner, LLP
Thompson Jewel
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