Sprayer having variable spray pattern
First Claim
1. A pump sprayer having a hollow piston stem defining a single liquid discharge passage through which liquid passes upon pumping, said piston stem being reciprocable during pumping within a container closure, a plunger head mounted on said stem and having a probe extending transversely from said stem, a nozzle cap surrounding said probe, said cap having a discharge orifice and means including a spin chamber in communication with said orifice for imparting a spin at a given velocity to the liquid to be discharged through said orifice as a fine mist spray having a predetermined spray cone, said plunger head and said nozzle cap having means defining a first liquid path extending from said discharge passage to said orifice via said spin imparting means through which the liquid passes, the improvement comprising:
- said probe having a through opening defining a second liquid path communicating directly with said single liquid discharge passage and with said spin chamber for likewise directing the liquid from said liquid passage through said probe opening to said spin chamber for negating the given velocity to produce a spray cone more narrow than the predetermined spray cone.
6 Assignments
0 Petitions
Accused Products
Abstract
A sprayer has a spray pattern which can be varied by the provision of a second fluid flow path which partially negates the spin velocity to produce a spray having a narrow spray cone producing spray. An opening in the spinner probe establishes the second fluid flow path from the discharge passage, and can be selectively opened and closed upon plunger rotation relative to a hollow piston stem.
50 Citations
25 Claims
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1. A pump sprayer having a hollow piston stem defining a single liquid discharge passage through which liquid passes upon pumping, said piston stem being reciprocable during pumping within a container closure, a plunger head mounted on said stem and having a probe extending transversely from said stem, a nozzle cap surrounding said probe, said cap having a discharge orifice and means including a spin chamber in communication with said orifice for imparting a spin at a given velocity to the liquid to be discharged through said orifice as a fine mist spray having a predetermined spray cone, said plunger head and said nozzle cap having means defining a first liquid path extending from said discharge passage to said orifice via said spin imparting means through which the liquid passes, the improvement comprising:
said probe having a through opening defining a second liquid path communicating directly with said single liquid discharge passage and with said spin chamber for likewise directing the liquid from said liquid passage through said probe opening to said spin chamber for negating the given velocity to produce a spray cone more narrow than the predetermined spray cone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A plunger sprayer comprising:
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a hollow piston stem reciprocable within a container closure and defining a fluid discharge passage; a plunger head on said stem having fluid spray means and a first fluid path extending from said discharge passage to said spray means; said spray means including a spinner probe having a through opening terminating at said stem; said stem having at least one opening in communication with said passage; said plunger head being rotatable about said stem into a position misaligning said openings for directing fluid from said passage through only said first path to produce a fluid spray of a given spin velocity; and said plunger head being rotatable about said stem into a position aligning said openings for directing fluid from said passage through both said paths to produce a fluid spray of a reduced velocity compared to said given velocity and of a narrow spray plume. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification