PNEUMATIC PUMP CONSTRUCTION AND METHOD FOR MAKING THE SAME OR THE LIKE

摘要

A pneumatic pump construction having an outer peripheral means of a flexible diaphragm interconnected to either an inlet housing or an outlet housing and having an inner peripheral means thereof interconnected to the other of the housings whereby the diaphragm interconnects the housings together to define a pumping chamber therebetween and permits relative movement of said housings to change the volume of said chamber for a pumping action of the pump construction, one of the housings comprising two parts having the inner peripheral means of the diaphragm stacked therebetween and being ultrasonically welded together to secure the inner peripheral means to the diaphragm thereto. A drive member is snap-fitted to one of the housings to provide driving motion of that one housing relative to the other housing for the pumping action.