Patent ID: 7614425
Filing Date: 2009-11-10
Classification: E04H,F16L,Y10T

Abstract:
1. A method of forming components of a swimming pool cleaner, the method comprising: a. providing a fluid channel in the form of an inner pipe made of material having a first hardness; b. overmolding or gluing onto the inner pipe a tubular diaphragm valve (i) comprising an open inlet, an open outlet, and a wall having a section intermediate the inlet and the outlet that is substantially collapsed absent manipulative pressure differential across the wall and (ii) made solely of flexible material softer than the first hardness, so that at least the interior of the tubular diaphragm valve is in fluid communication with the fluid channel and the flexible softer material of the tubular diaphragm valve contacts the harder material of the inner pipe; c. providing an outer pipe surrounding at least a majority portion of the inner pipe; and d. connecting in fluid communication an operating head having an inlet with the inlet of the tubular diaphragm valve.