Patent ID: 7441975

Claim:
A device for treating a surface with a liquid substance, which device comprises: a holder with a reservoir for substance, a sponge-like body via which the substance absorbed from the reservoir can be spread on the surface, at least one receiving chamber located between the reservoir and the sponge-like body having an inflow opening communicating with the reservoir and an outflow opening for supplying the liquid substance to the sponge-like body, the inflow opening being closed in the condition of rest of the device and being releasable by a movement of the sponge-like body with respect to the surface to be treated, whereas the receiving chamber is in a permanent open communication with the sponge like body via the outflow opening, characterized in that the inflow opening is larger than the outflow opening so as to cause the liquid substance flowing into the receiving chamber through the inflow opening fills the receiving chamber very quickly and substantially no liquid substance creeps away through the outflow opening, the liquid substance being thus absorbed by the sponge-like body with a certain time delay in that the receiving chamber is aerated by an aeration opening connecting the receiving chamber with a space between the receiving chamber and the sponge-like body for allowing a proper outflow of the liquid substance from the receiving chamber during the operation of the device.