Liquid purification or separation – With means to add treating material
Reexamination Certificate
1999-05-06
2001-02-13
Walker, W. L. (Department: 1723)
Liquid purification or separation
With means to add treating material
C137S268000, C137S625480, C137S895000, C210S136000, C422S261000, C422S266000
Reexamination Certificate
active
06187186
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to devices for introducing substances into water, for example for producing solutions to be used in showers, in sanitary systems, for washing of objects, for spraying, etc.
Some devices of this type are disclosed for example in U.S. Pat. No. 5,730,178. They can be further improved so as to provide a better control of the water in substance supply, to improve turning on and off of the device, to improve fixation system, to stabilize a substance consumption corresponding to the individual conditions in water systems, and also to expand the range of its use for technical applications.
SUMMARY OF THE INVENTION
Accordingly, it is an object of present invention to provide a device for introducing substances into water which is a further improvement of the existing devices.
In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in a device for introducing substances into water, which has a housing forming a first chamber communicatable with a water supply, a second chamber communicable with a consumer, and a partition separating the first chamber from the second chamber and having an opening, connecting means including first communicating means which communicate the first chamber with a source of substance so that water supplied from the source of water through the first chamber flows into the source of substance, and second communicating means which communicate the source of substance with the second chamber so that a mixture of water and substance is supplied from the source of substance into the second chamber,a connecting flange for connecting said housing with the source of substance, said first communicating means being formed as a first throughgoing housing opening, said second communicating means being formed as a second throughgoing housing opening, and said connecting flange has a first and a second flange openings, said flange being movable relative to said housing so that said first and second flange openings coincide with said first and second throughgoing housing openings in an operational condition of the device, and are offset relative to one another in an inoperational condition of the device; and sealing means provided in the region of said first and second throughgoing housing openings for preventing leaks between said housing and said connecting flange.
In accordance with a further feature of the present invention the device has means for attaching said housing to the source of water, said attaching means including a nut, and an inner bushing introducable into an end opening of said housing and fixed in said end opening.
Still a further feature of present invention resides, in the device in which said control means is formed so as to prevent a return flow of the substance into the source of water.
REFERENCES:
patent: 2113203 (1938-04-01), Straubel
patent: 2381589 (1945-08-01), Hayes
patent: 2562415 (1951-07-01), Chase
patent: 2604446 (1952-07-01), Palmer
patent: 2680044 (1954-06-01), Smith
patent: 3390695 (1968-07-01), King et al.
patent: 3984053 (1976-10-01), Hechler, IV
patent: 4340078 (1982-07-01), Pasley
patent: 5303729 (1994-04-01), DeMarco
patent: 5730178 (1998-03-01), Zhadanov et al.
Zhadanov El
Zhadanov Sam
Cecil Terry K.
Walker W. L.
Zborovsky I.
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