Patent ID: 6328543
Filing Date: 2001-12-11
Classification: A47L,C11D

Abstract:
A gear pump/reservoir device for a fluid sprayer, comprising:a motor driven gear pump having a mounting surface for attachment to a hand held appliance and a means for sealing said gear pump to a fluid reservoir, said fluid reservoir located above said gear pump so that a static head of fluid in said reservoir maintains said gear pump in a primed state;a fluid line leading from said gear pump to a sprayer head, said fluid line having a discharge check valve located therein, said check valve having a cracking pressure higher than said static head of fluid so that fluid passes to said sprayer head only when said gear pump operates to increase pressure in said fluid line above said cracking pressure; andmeans for powering and operating said motor driven gear pump such that said gear pump provides a continuous flow of fluid to said sprayer head when said means is activated.