Patent ID: 9556863
Date: 2017-01-31
CPC Classifications: B05B,F04B

Claim:
1. A peristaltic pump for a sprayer comprising a compressible tube having inlet and outlet ends which carries liquid being pumped through said tube from said inlet end to said outlet end, said tube extending around at least a 360° path over a plurality of rollers circumferentially spaced from each other, said rollers successively engaging and compressing said tube to pump the liquid in a plurality of successive pulses along the tube, wherein the tube is wrapped helically around the rollers so that said tube is disposed in side by side relationship on at least one of said rollers intermediate said path, and successive spaced regions of said tube are in compressive engagement with at least one of said rollers to provide two of said plurality of travelling pulses simultaneously; an inlet hose connecting a tank for liquid to be sprayed to said inlet end of said tube; an outlet hose from said outlet end of said tube for connecting said tube to a spray head; a return hose to said tank; and a two-way valve having on and off positions for manually selectively connecting said outlet hose to said return hose or to said spray head wherein in said off position said two-way valve is operable to discontinue spraying via said spray head, and in said on position said two-way valve is operable to discontinue flow via said return hose.