Fluid sprinkling – spraying – and diffusing – Fluid pressure responsive discharge modifier* or flow... – On-off only
Patent
1994-01-10
1995-06-27
Merritt, Karen B.
Fluid sprinkling, spraying, and diffusing
Fluid pressure responsive discharge modifier* or flow...
On-off only
239569, 239570, 239562, 251243, B05B 130
Patent
active
054273188
ABSTRACT:
A one-touch on-off showerhead valve apparatus for controlling the flow of fluid by pushbutton operation that includes a body having an inner cavity which is divided into first, second and third spaces by a bellows and a support plate mounted therein. The bellows defines a first flow path to permit fluid entering the apparatus to flow between the first and second spaces. A spool fixed to and penetrating both the support plate and bellows defines a second flow path having a diameter larger than the first flow path which permits fluid to flow between the second and third spaces. A valve connected to the pushbutton selectively permits fluid to flow through the second flow path. A third flow path is formed in the support plate that permits fluid to flow between the first and third spaces. When the second flow path is normally closed by the valve, the bellows blocks the third flow path preventing fluid from flowing into the third space and out of the apparatus. When the second flow path is selectively opened upon depression of the pushbutton, fluid flows from the second space to the third space through the second flow path. The fluid pressure in the third space becomes greater than that of the second space, thereby causing the bellows to uncover the third flow path and fluid flows between the first and third spaces and out of the apparatus.
REFERENCES:
patent: 2583233 (1952-01-01), Russell
patent: 2789011 (1957-04-01), Gebauer
patent: 3637143 (1972-01-01), Shanes et al.
patent: 4629124 (1986-12-01), Gruber
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