Atomizing pump spray
First Claim
1. A manual spray pump assembly, comprising:
- a piston cylinder;
a reciprocating piston;
a valve member; and
a compound spring, said compound spring having;
a first compression region and a second compression region,said first region being coaxial with said second region, and having a first end and a second end, andsaid second region having a first end and a second end, said first region second end being fixed to said second region first end,said reciprocating piston being within said piston cylinder,said piston cylinder having an interior compression chamber and a valved outlet from said compression chamber,said valve member being positioned within said piston cylinder and having an outlet valve end, said valve member being in biased engagement with said compound spring second compression region second end and biased toward fluid tight engagement with said piston cylinder valved outlet,said compound spring first region first end being in biased engagement with said piston cylinder, and said compound spring first region, second end being in engagement with and movable with said reciprocating piston.
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Accused Products
Abstract
The invention relates to a manual, self-priming precompression spray pump, which employs a minimal number of different parts. The assembly includes a container for the liquid, a cap, a conventional spray nozzle unit, a valve member, a piston, a spring and a cylinder for housing the piston and providing a compression chamber. The valve upper end functions as an outlet valve and the valve lower end functions as an inlet valve. The spring is a compound spring and serves to force the valve outlet end into a constant sealing engagement with the interior of the piston, and to resist the compression movement of the piston. The cylinder for housing the piston includes an inner, concentric valve cylinder. The inner cylindrical wall has an axial length which terminates short of the chevron valve when said valve member and said piston are fully biased away from said inlet valve, whereby said chevron valve is in a position outside of said inner cylindrical wall. Thus, at this extreme position, the inlet valve is fully open for cooperation with said piston cylinder inlet end to restrict liquid flow from out of said piston compression chamber and through said piston cylinder inlet end.
24 Citations
22 Claims
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1. A manual spray pump assembly, comprising:
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a piston cylinder; a reciprocating piston; a valve member; and a compound spring, said compound spring having; a first compression region and a second compression region, said first region being coaxial with said second region, and having a first end and a second end, and said second region having a first end and a second end, said first region second end being fixed to said second region first end, said reciprocating piston being within said piston cylinder, said piston cylinder having an interior compression chamber and a valved outlet from said compression chamber, said valve member being positioned within said piston cylinder and having an outlet valve end, said valve member being in biased engagement with said compound spring second compression region second end and biased toward fluid tight engagement with said piston cylinder valved outlet, said compound spring first region first end being in biased engagement with said piston cylinder, and said compound spring first region, second end being in engagement with and movable with said reciprocating piston. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An atomizer comprising, a container, a liquid within said container, an atomizer nozzle and a pump assembly, said pump assembly being adapted to deliver liquid under pressure to said atomizer nozzle, said spray pump assembly having:
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a piston cylinder; a reciprocating piston; a valve member; and a compound spring, said compound spring having; a first compression region and a second compression region, said first region being coaxial with said second region, and having a first end and a second end, and said second region having a first end and a second end, said first region second end being fixed to said second region first end, said reciprocating piston being within said piston cylinder, said piston cylinder having an interior compression chamber and a valved outlet from said compression chamber, said valve member being positioned within said piston cylinder and having an outlet valve end, said valve member being in biased engagement with said compound spring second compression region second end and biased toward fluid tight engagement with said piston cylinder valved outlet, said compound spring first region first end being in biased engagement with said piston cylinder, and said compound spring first region, second end being in biased engagement with and movable with said reciprocating piston. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A self priming manual spray pump assembly, comprising:
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a piston cylinder; a reciprocating piston; a valve member; spring means; a fluid delivery tube receiving inlet; and said reciprocating piston being within said piston cylinder, said piston cylinder having an interior compression chamber and a valved outlet from said compression chamber, said valve member being positioned within said piston cylinder and having an outlet valve end, said valve member being spring biased by said spring means into fluid tight engagement with said piston cylinder valved outlet, said piston cylinder having an inlet end and said valve member having a valve inlet end, said valve member inlet end being movable between a first position and a second position, said valve member, in said first position being in flow restricting engagement with said piston cylinder inlet end in said second position said valve member being out of flow restricting engagement with said piston cylinder inlet end, said delivery tube receiving inlet being at the inlet end of said piston cylinder, and having its longitudinal axis substantially parallel to the longitudinal axis of said piston cylinder, said delivery tube receiving inlet longitudinal axis being radially offset from said piston cylinder longitudinal axis, said delivery tube receiving inlet being tangentially oriented relative to said piston cylinder inlet end. - View Dependent Claims (21)
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22. A method of delivering an atomized spray from a manual atomizer, said manual atomizer comprising, a container, a liquid within said container, an atomizer nozzle and a pump assembly, said pump assembly being adapted to deliver liquid under pressure to said atomizer nozzle, said spray pump assembly having:
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a piston cylinder; a reciprocating piston; a valve member; and a compound spring, said compound spring having a first compression region and a second compression region, said first region being coaxial with said second region, and having a first end and a second end, and said second region having a first end and a second end, said first region second end being fixed to said second region first end, said reciprocating piston being within said piston cylinder, said piston cylinder having an interior compression chamber and a valved outlet from said compression chamber, said valve member being positioned within said piston cylinder and having an outlet valve end, said valve member being in fixed engagement with said compound spring second compression region second end and biased toward fluid tight engagement between said valve member outlet valve end and said compression chamber valved outlet, said compound spring first region first end being in biased engagement with said piston cylinder, and said compound spring second region, first end being in biased engagement with and movable with said reciprocating piston, comprising the steps of; pressing on said atomizer against the force of said compound spring first region, compressing fluid within said compression chamber until the compressive forces in said compression chamber are greater that the closure force of said compound spring second region, causing said valve member to be out of fluid tight engagement said compression chamber valved outlet, and discharging an atomized spray from said atomizer nozzle.
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Specification