Zanussi Elettrodomestici S.p.a.

Giuseppe Cargnel

Piero Durazzani

Piero Babuin

Pietro Rizzetto

Maurizio Mori

A plastic washtub used preferably in household clothes washing machines having a rigid structure (1) formed by a cylindrical wall (2 ), a circular bottom wall (3 ), and a circular front wall. A hub (6) is inserted through the central part of the bottom wall. It is called a hub because it is inserted into a central circular hub-housing (7) of the bottom wall (3) and supports the central shaft (11 ) of the rotor (8 ) in a known manner. This hubhousing's central portion (7) has around and adjacent to it one or more closed, empty chambers so that the hub-housing (7) does not enter into contact with the washing liquid. It is preferred that, inside the tub, said hub-housing (7) be protected by a plate (15), preferably of plastic, which is attached to ribs on the bottom wall to prevent the washing liquid from directly contacting the hub-housing.

Plastic washtub

A dispenser for washing machines, in particular clothes washing machines or combined clothes washing and drying machines. The dispenser includes first and second rigid conduits (12, 13) extending orthogonally with respect to each other. The first is connected with a sealed enclosure (8) containing the liquid detergents and/or rinse aids. The second is connected with a quick-fitting coupler (25) that is adapted to be connected and disconnected with respect to a further rigid conduit (28) communicating with the wash tub of the washing machine through a positive-displacement pump. The second rigid conduit (13) is associated with a check valve (32) that is biased by a spring (42) to move from a first to a second position, whereby a communication is therefore established or discontinued between the enclosure (8) and its outer space when the second rigid conduit (13) is engaged and disengaged, respectively, with respect to said quick-fitting coupling means (25). The dispensing arrangement can quickly and easily be installed in and removed from washing machines of the aforementioned type.

Arrangement for dispensing liquid detergents and/or rinse aids in a

A controlling device controls the operation of a clothes washing machine having a tub, a washing liquid collector, a heating element and two thermostats within the collector, and an electric pump for circulating the washing liquid from the collector to the tub. Three pressostats or pressure switches allow washing liquid to be filled to two different levels in the machine and for controlling the working condition of a filtering element within the collector. The controlling device allows both 'intensive' washing programs with only a low level of liquid in the collector and 'delicate' washing programs with normal levels of liquid in the tub. Different types of laundry can be washed under the best conditions with low consumption of water, detergents and electric power.

Growing community of inventors

Treviso, Italy

Giuseppe Cargnel