Patent ID: 7938337
Filing Date: 2011-05-10
Classification: A01C,A01G,B05B,G05D,Y10S

Abstract:
1. An apparatus, comprising: a nozzle assembly structured to spray a liquid, the nozzle assembly including: a liquid supply pathway; a housing including an internal chamber bounded by a sidewall extending between a proximal end and a distal end, the sidewall terminating at a distal face bounding the internal chamber at the distal end, the internal chamber being in communication with the liquid supply pathway to receive the liquid therefrom; a spray orifice defined through the distal face, the spray orifice being in fluid communication with the internal chamber; a metering member extending distally from the internal chamber through the spray orifice; and wherein at least a portion of the sidewall is elastically deformable to change a dimension between the distal end and the proximal end in response to a degree of pressure change in the internal chamber, and the distal face moves relative to the metering member when the dimension changes to adjust effective size of the spray orifice; and wherein the nozzle assembly defines a partition proximal to the distal face, the partition dividing the internal chamber between the proximal end and the distal end and including an aperture receiving a portion of the metering member therethrough to define a pre-orifice valve.