Fluid dispenser
First Claim
Patent Images
1. A fluid dispenser having capabilities for no flow and first and second spray shapes comprising:
- (A) a dispenser body defining a fluid inlet, a fluid outlet, and an internal passage for a fluid stream, said passage being in fluid communication with said inlet and outlet and defining a wide chamber, a narrow chamber and a valve seat, said valve seat being disposed intermediate said wide and narrow chambers and tapering from the diameter of said wide chamber to the diameter of said narrow chamber;
(B) a piston having spray shaping means and valve body means, said piston being movable among no flow and first and second solid spray shape positions,(1) in said no flow position said valve body means engaging said valve seat to block flow through said passage and said spray shaping means being in said narrow chamber;
(2) in said first spray shape position said valve body means being spaced from said valve seat and said spray shaping means being disposed in said narrow chamber; and
(3) in said second spray shape position said valve body means being spaced from said valve seat and said spray shaping means being disposed in said wide chamber; and
(C) means operatively connected to said piston for moving said piston among said positions.
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Accused Products
Abstract
A fluid dispenser, preferably a pistol grip type hose nozzle, affords no flow, solid misty cone spray and solid jet spray capabilities and contains a fluid flow rate control feature for instantaneous adjustment of the rate of fluid flow through the dispenser.
86 Citations
21 Claims
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1. A fluid dispenser having capabilities for no flow and first and second spray shapes comprising:
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(A) a dispenser body defining a fluid inlet, a fluid outlet, and an internal passage for a fluid stream, said passage being in fluid communication with said inlet and outlet and defining a wide chamber, a narrow chamber and a valve seat, said valve seat being disposed intermediate said wide and narrow chambers and tapering from the diameter of said wide chamber to the diameter of said narrow chamber; (B) a piston having spray shaping means and valve body means, said piston being movable among no flow and first and second solid spray shape positions, (1) in said no flow position said valve body means engaging said valve seat to block flow through said passage and said spray shaping means being in said narrow chamber; (2) in said first spray shape position said valve body means being spaced from said valve seat and said spray shaping means being disposed in said narrow chamber; and (3) in said second spray shape position said valve body means being spaced from said valve seat and said spray shaping means being disposed in said wide chamber; and (C) means operatively connected to said piston for moving said piston among said positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A fluid dispenser having capabilities for no flow and first and second spray shapes comprising:
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(A) a dispenser body defining a fluid inlet, a fluid outlet, and an internal passage for a fluid stream, said passage being in fluid communication with said inlet and outlet and defining a wide chamber, a narrow chamber and a valve seat; (B) a piston having spray shaping means and valve body means, said piston being movable among no flow and first and second solid spray shape positions, (1) in said no flow position said valve body means engaging said valve seat to block flow through said passage; (2) in said first spray shape position said valve body means being spaced from said valve seat and said spray shaping means being disposed in said narrow chamber; and (3) in said second spray shape position said valve body means being spaced from said valve seat and said spray shaping means being disposed in said wide chamber; (C) means operatively connected to said piston for moving said piston among said positions; and (D) manually operable handle means operatively connected to said piston-moving means for moving same; said dispenser body further defining a resiliently flexible finger having at the free end thereof latch means for engaging said handle means when said piston is in one of said spray positions, said finger being movable between a first position wherein said latch means engages said handle means to immobilize it against movement in a given direction and a second position wherein it does not, said dispenser body, said finger and said latch means being of one-piece integral construction. - View Dependent Claims (18, 19, 20)
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21. A fluid dispenser having capabilities for no flow and first and second spray shapes comprising:
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(A) a dispenser body defining a fluid inlet, a fluid outlet, and an internal passage for a fluid stream, said passage being in fluid communication with said inlet and outlet and defining a wide chamber, a narrow chamber and a valve seat; (B) a piston having spray shaping means and valve body means, said piston being movable among no flow and first and second spray shape positions, (1) in said no flow position said valve body means engaging said valve seat to block flow through said passage; (2) in said first spray shape position said valve body means being spaced from said valve seat and said spray shaping means being disposed in said narrow chamber; and (3) in said second spray shape position said valve body means being spaced from said valve seat and said spray shaping means being disposed in said wide chamber; (C) means operatively connected to said piston for moving said piston among said positions; and (D) manually operable handle means operatively connected to said spray shaping means for moving same; said dispenser body further defining a resiliently flexible finger having a free end with latch means for engaging said handle means when said spray shaping means is in a given position, said finger being movable between a first position wherein said latch means engages said handle means to immobilize it against movement in a given direction and a second position wherein it does not, said dispenser body, said finger and said latch means being of one piece integral construction.
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Specification