Fluid handling – Convertible – Unit orientable in a single location between plural positions
Patent
1987-06-01
1989-02-14
Cohan, Alan
Fluid handling
Convertible
Unit orientable in a single location between plural positions
1376254, 1376362, F16K 1106
Patent
active
048040118
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention deals with a cartridge to be introduced into the body of a mixing valve faucet so as to regulate the water flow rate and the mixing proportions of the liquid from two supply inlets in the faucet. The cartridge has a shell, a bottom, a fixed valve seat of hard material mounted in the bottom, an operating mechanism within the shell, and at least a movable valve plate connected to the operating mechanism to cooperate with the fixed valve seat.
BACKGROUND OF THE INVENTION
Many kinds of mixing valves are distinguishable because of their water flow rate, the kind of valve plates used for the regulation of liquid flow, the arrangement of the supply lines and spout outlet, the optional placement of divertors, or the presence of other particular characteristics as required by the laws or regulations of some particular countries. Furthermore, the same mixing valve can behave differently depending on how it is connected to the supply lines if the cartridge is not correspondingly modified.
Up to now there has been the necessity to produce many different cartridges, each one particularly suited to different kinds of mixing valves or to particular installation conditions although the shell, operating mechanism, and other components are not substantially different in different models and are theoretically susceptible to standard construction. The production of many kinds of cartridges, which are different only because of some minor details, causes a cost increase in production, inventory and distribution and causes the plumbers to be supplied with different kinds of cartridges and the risk in choosing from the various cartridges.
SUMMARY OF THE INVENTION
It is desirable to find a remedy to the aforesaid problem by standardizing a cartridge for different kinds of mixing valves or for different installation conditions. Consequently, reductions of the production and storage costs and better industrial organization of the production, storage and distribution of the cartridge are possible.
It is also desirable to make a standard cartridge available for installation in different kinds of mixing valves or in different installation conditions.
Standardization can be achieved, according to this invention, through a cartridge characterized by a shell that is built in a substantially standard form that is adequate for different kinds of mixing valves and for different installation conditions. The operating mechanism is housed in the shell. The bottom is built separately from the shell and bears at least the main parts intended to distinguish the cartridges assigned to different kinds of mixing valve bodies or to different installation conditions. A joint between the shell and the bottom allows the cartridge shell to be joined to different bottoms or the bottom to be mounted in different positions and the joint is constructed to resist pulling without disconnection of the bottom from the shell. The joint can be formed to allow mounting of the bottom to the shell in more than one position.
Due to these characteristics, the main and most expensive bulky part of the cartridge can easily be of only one standard model to form the cartridges assigned to many kinds of mixing valves and to different installation conditions. The distinguishing elements, diversifying the cartridges assigned to different kinds of mixing valves or to different installation conditions, are in the separate bottom member.
The separate bottom does not cause any trouble as its own joining devices are not releasable through a simple pull. This way, the whole cartridge along with the bottom can always be removed from the mixing valve body, where it was seated without the bottom being accidentally retained in the body because of the holding seals, incidental adhesions or the like.
The cartridge can have a joint arranged between the shell and the cartridge bottom so that the bottom can be mounted to the shell without separate tools. Due to this characteristic, the standardized part of the cartridge and the distinguishing bott
REFERENCES:
patent: 4005728 (1977-02-01), Thorp
patent: 4325403 (1982-04-01), Uhlmann
patent: 4378029 (1983-03-01), Parkison
patent: 4425935 (1984-01-01), Gonzalez
patent: 4557288 (1985-12-01), Botnick
patent: 4584723 (1986-04-01), Hussauf
patent: 4596376 (1986-06-01), Knapp
patent: 4610268 (1986-09-01), Knapp
Cohan Alan
Masco Corporation
Permut Steven L.
Sutherland Malcolm L.
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