Water supply device for dental work stations
AssigneeSiemens Aktiengesellschaft
InventorsHans-Peter Frey, Hans-Michael Kratochwilla
Life of this patent
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Abstract
A water supply device for dental apparatuses which is provided with an arrangement to prevent backflow of contaminated water from any one of the dental apparatuses into the fresh water supply is characterized by providing a separate container for receiving water from the water system and a pump for pumping water from the container through lines to each of the discharge locations for the dental apparatus. In one embodiment, the pump is driven by an electrical motor and in another embodiment the pump is formed by two air-actuated piston pumps that work asynchronously. The arrangement can include a second container for disinfectant, which is discharged into the first container as fluid is added to the first container.
Claims18
In a water supply device for a dental work station containing a plurality of equipment comprising water exits and withdrawal locations and to which water is supplied from a feed water line of a drinking water line network, wherein at least one of the withdrawal locations cannot be arranged at a safe distance with respect to a drain allocated to the withdrawal location that is required according to technical rules for protecting drinking water from a backflow, the improvements comprising isolation means being provided in a line leading from the feed water line of the drinking water line network to at least said withdrawal locations, said isolation means separating the feed water line from said withdrawal location within the framework of the prescribed safety measurements;
- and pump means being provided in a line section following the isolation means, said pump means increasing the water pressure in said line section to a value required at each of the withdrawal locations.
Dependencies are inferred from the claim text.