Precompression valve for trigger sprayer
DCFirst Claim
1. A trigger sprayer comprising:
- a body having a cylinder therein;
liquid inlet means in communication with said cylinder;
an outlet waterway in communication with said cylinder;
outlet nozzle means including a nozzle which has an outlet orifice and which is movable to and from a position in communication with said waterway;
a piston having an inner end and an outer end and being received in said cylinder;
a trigger operatively coupled to said body and acting on said outer end of said piston;
precompression valve means in a fluid path between said piston and said outlet orifice;
said precompression valve means being operable to allow liquid in a first part of said fluid path to reach said outlet orifice only after a predetermined pressure is established in said cylinder and to stop liquid from reaching said outlet orifice when the pressure in said cylinder falls below said predetermined pressure;
said precompression valve means comprising a valve body in said fluid path and having passage means, including a space, communicating between said piston and said outlet orifice, and comprising a spring valve element in said space whereby, when pressure is built up in said passage means upon movement of said piston into said cylinder, said spring valve element is caused to flex allowing liquid under pressure to escape past said spring valve element into a second part of said fluid path and out said outlet orifice in said nozzle; and
,biasing means for biasing said piston away from said precompression valve means.
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Accused Products
Abstract
The trigger sprayer comprises: a body having a cylinder therein; a liquid inlet in communication with the cylinder; an outlet waterway in communication with the cylinder; an outlet nozzle which has an outlet orifice and which is movable to and from a position in communication with the waterway; a piston having an inner and an outer end and being received in said cylinder and being movable between an outer at rest position and an inner pumping stroke position during the pumping strokes of the piston in the cylinder; a trigger operatively coupled to the body and acting on the outer end of the piston; a precompression valve in the cylinder, the valve being operable to allow liquid in the cylinder to enter the waterway only after a predetermined pressure is established in the cylinder and to stop liquid from entering the waterway when the pressure in the cylinder falls below the predetermined pressure; and, biasing structure for biasing the piston away from the valve.
51 Citations
38 Claims
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1. A trigger sprayer comprising:
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a body having a cylinder therein; liquid inlet means in communication with said cylinder; an outlet waterway in communication with said cylinder; outlet nozzle means including a nozzle which has an outlet orifice and which is movable to and from a position in communication with said waterway; a piston having an inner end and an outer end and being received in said cylinder; a trigger operatively coupled to said body and acting on said outer end of said piston; precompression valve means in a fluid path between said piston and said outlet orifice; said precompression valve means being operable to allow liquid in a first part of said fluid path to reach said outlet orifice only after a predetermined pressure is established in said cylinder and to stop liquid from reaching said outlet orifice when the pressure in said cylinder falls below said predetermined pressure; said precompression valve means comprising a valve body in said fluid path and having passage means, including a space, communicating between said piston and said outlet orifice, and comprising a spring valve element in said space whereby, when pressure is built up in said passage means upon movement of said piston into said cylinder, said spring valve element is caused to flex allowing liquid under pressure to escape past said spring valve element into a second part of said fluid path and out said outlet orifice in said nozzle; and
,biasing means for biasing said piston away from said precompression valve means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A trigger sprayer comprising:
- a body having a cylinder therein;
liquid inlet means in communication with said cylinder;
an outlet waterway in communication with said cylinder;
outlet nozzle means including a nozzle which has an outlet orifice and which is movable to and from a position in communication with said outlet waterway;
a piston having an inner end and an outer end and being received in said cylinder;
a fluid path including at least a part of said cylinder and said waterway and extending between said piston and said outlet orifice;
a trigger operatively coupled to said body and acting on said outer end of said piston;
precompression valve means in said fluid path between said piston and said outlet orifice;
said precompression valve means being operable to allow liquid in a first part of said fluid path to reach said outlet orifice only after a predetermined pressure is established in said cylinder and to stop liquid from reaching said outlet orifice when the pressure in said cylinder falls below said predetermined pressure;
said precompression valve means comprising a valve seat in said fluid path, a spring valve element in said fluid path and retaining means in said fluid path for retaining said spring valve element against said valve seat, whereby, when pressure is built up in said first part of said fluid path upon movement of said piston into said cylinder, said spring valve element is caused to flex allowing liquid under pressure to escape past said spring valve element into a second part of said fluid path and out said outlet orifice in said nozzle; and
, biasing means for biasing said piston away from said precompression valve means. - View Dependent Claims (34, 35, 36, 37, 38)
- a body having a cylinder therein;
Specification