Fluid handling – Systems – Flow path with serial valves and/or closures
Reexamination Certificate
2001-01-24
2001-11-27
Lee, Kevin (Department: 3753)
Fluid handling
Systems
Flow path with serial valves and/or closures
C137S625170
Reexamination Certificate
active
06321786
ABSTRACT:
FIELD OF THE INVENTION
My present invention relates to a cartridge for a single-lever mixing faucet of the type in which the control of the flow and of the water temperature is effected by the movement of one disk relative to another by a lever pivotal in a cartridge housing in which the disks are contained.
BACKGROUND OF THE INVENTION
Cartridge-type water faucets which have a faucet body capable of receiving the cartridge and whereby the hot and cold water lines are connected to the outlet through the cartridge are increasing in utilization throughout the world.
It is also known to provide contactless electrically-controlled faucets which have been widely used in public facilities. However, if the electric current supply to such faucets fails or electrical components like electric valves fail, water cannot flow from the faucet.
OBJECT OF THE INVENTION
It is, therefore, the principal object of the present invention to provide an improved cartridge for a single-lever mixing faucet of the aforedescribed type which enables water supply even in the case of a failure of the electrical component or of the supply power.
Another object of this invention is to provide a more versatile cartridge for a faucet whereby drawbacks of earlier systems are avoided.
SUMMARY OF THE INVENTION
These objects are attained, in accordance with the invention by providing within the cartridge a second valve, i.e. a valve in addition to that formed by the relatively slidable disk and in an outlet passage of this cartridge or the first valve thereof. More particularly, the cartridge for a single-lever mixing faucet according to the invention can comprise:
a faucet-cartridge housing;
a nonshiftable inlet/outlet disk in the housing communicating with hot and cold water inlets and an outlet;
a shiftable control disk in the housing juxtaposed with the inlet/outlet disk for selectively connecting the inlets with the outlet;
a lever pivotally mounted in the housing and operatively connected with the control disk for displacing the control disk; and
an electrically operated valve within the housing in the outlet.
With the control afforded by the present invention, the electromagnetically operated valve can be triggered to enable and disable the flow of any response to the project to the faucet, e.g. the hand of the user, while manual actuation is also possible. The manual actuation can enable control of the volumetric flow rate so that the flow itself can be independent of the electric valve. The manual operation allows supply of the water even in the case of a failure of the proximity switch or other means for sensing the presence of the user.
The manual actuation, in addition, allows complete blockage of the flow so that for cleaning of the faucet or the basin or sink, undesired openings of the electrical valve by the proximity or contactless sensor will have no effect.
It is especially advantageous to form the inlet/outlet disk with a second outlet opening form which water passes through the system, the second passage opening directly into the outlet. The second valve should be advantageously an electromagnetic membrane valve.
REFERENCES:
patent: 4960154 (1990-10-01), Dagiantis
patent: 5224509 (1993-07-01), Tanaka et al.
patent: 5494077 (1996-02-01), Enoki et al.
patent: 5755262 (1998-05-01), Pilolla
patent: 196 23 104 (1997-12-01), None
patent: 198 46 720 (2000-04-01), None
patent: 0 392 441 (1990-10-01), None
Dubno Herbert
KLUDI Aramaturen Scheffer Vertriebs- und Verwaltungs OHG
Lee Kevin
LandOfFree
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