Patent ID: 6158625
Filing Date: 2000-12-12
Classification: B05B

Abstract:
A manually actuated pump sprayer comprising, a plunger head having a side wall containing a discharge orifice, said plunger head being reciprocable against a predetermined biasing force provided by a first spring, a cover surrounding said plunger head and being independently reciprocable against a biasing force less than said predetermined force and provided by second spring means, said cover having a side wall with a portion thereof overlying said discharge orifice in a condition of non-use, said side wall having an opening adjacent said portion in alignment with said discharge orifice only upon relative shifting movement of said cover against the biasing force of said second spring means,the improvement wherein said side wall portion seals about said orifice in said non-use position and has a cavity for the containment without drying at said orifice of any product residue formed during pumping,and means acting between said side wall and said plunger for spacing said side wall portion gradually toward and away from said plunger during the relative shifting movement of said cover for covering and uncovering said orifice.