US 12,251,719 B2
Nozzle assembly for delivering an oscillating spray pattern
Peter Schuller, Elko, MN (US); and Ryan Olson, Cannon Falls, MN (US)
Assigned to Sonny's HFI Holdings, LLC, Wilmington, DE (US)
Filed by Sonny's HFI Holdings, LLC, Wilmington, DE (US)
Filed on Mar. 17, 2021, as Appl. No. 17/204,251.
Claims priority of provisional application 63/021,811, filed on May 8, 2020.
Prior Publication US 2021/0346895 A1, Nov. 11, 2021
Int. Cl. B05B 1/08 (2006.01)
CPC B05B 1/083 (2013.01) 16 Claims
OG exemplary drawing
 
1. A nozzle assembly comprising:
a stator member comprising a stator surface that defines a progressing cavity having at least two stator cavities serially arranged and coupled along a longitudinal axis of the stator member, wherein the stator member is configured such that motive fluid enters the progressing cavity at a proximal end of the stator member and exits the progressing cavity at a distal end of the stator member, and wherein a cross-sectional area of the progressing cavity increases along a longitudinal axis of the nozzle assembly from the proximal end to the distal end of the stator member, wherein a first stator cavity of the at least two stator cavities has a first cross-sectional area, a second stator cavity of the at least two stator cavities has a second cross sectional area greater than the first cross-sectional area, and the motive fluid is directed along the stator surface;
a rotor member in the progressing cavity, the rotor member comprising:
an elongated member having a rotor surface and extending between the proximal end and the distal end of the stator member and along the stator surface;
a first rotor lobe engaged with the stator surface in the first stator cavity; and
a second rotor lobe engaged with the stator surface in the second stator cavity, wherein:
a cross-sectional area of the rotor member increases from the proximal end to the distal end of the stator member,
the rotor surface and the stator surface define a first set of complementary tapered surfaces based on the engagement of the first rotor lobe and the first stator cavity,
the rotor surface and the stator surface define a second set of complementary tapered surfaces based on the engagement of the second rotor lobe and the second stator cavity, and
the at least two stator cavities are adapted for defining an oscillatory movement of the rotor member in response to a flow of the motive fluid through the progressing cavity;
a spray member associated with the rotor member and configured for movement with the oscillatory movement of the rotor member, the spray member having a spray inlet, a nozzle outlet, and a through portion extending between the spray inlet and the nozzle outlet; and
a cap seating the spray member adjacent the stator member and defining a port that remains fluidly coupled with the nozzle outlet during the movement of the spray member,
wherein the stator member, the rotor member, the spray member, and the cap cooperate to deliver an oscillatory spray of the motive fluid from the nozzle assembly.