A SPRAY PUMP PACKAGE EMPLOYING MULTIPLE ORIFICES FOR DISPENSING LIQUID IN DIFFERENT SPRAY PATTERNS WITH AUTOMATICALLY ADJUSTED OPTIMIZED PUMP STROKE FOR EACH PATTERN FOR SPRAYING LIQUIDS WITH DIFFERENT SPRAY PATTERN )

摘要

The spray pump package 10 is capable of delivering two or more different preset spray patterns or spray characteristics through two or more different spray orifices 20,30 wherein the liquid application amount per unit area to be treated is between two extreme positions Optimally applied to the particular spray orifice 20,30 selected rather than compromise. The predetermined spray pattern selected by the end user is the cone angle of spray; The width of the speare pattern; The average size of the particles in the spray; The amount of particle size variation in the mean; Etc., depending on the particular spray pattern or spray characteristics. The package includes means for automatically adjusting the maximum available pump stroke to optimize the maximum amount of product dispensed into each complete pump stroke for an orifice selected by the end user. In particular, in a preferred embodiment, the package employs a self-acting positive displacement pump regardless of stroke length.