Patent ID: 10980381

Abstract:
A nozzle assembly for use with a vacuum source includes a base member, a top cover member, a diaphragm, a valve flap and a plurality of springs. The base member has a suction opening extending therethrough. The top cover member enclosing an interior of the nozzle assembly. The diaphragm is rotationally coupled to the base member and includes an opening extending therethrough. The valve flap is rotationally coupled to the diaphragm and covers the opening in the diaphragm. One or more diaphragm springs are positioned between the base member and the diaphragm. One or more valve springs are positioned between the base member and the valve flap. An internal cavity is defined below the diaphragm and above the base member. In operation, pressure forces inside the internal cavity compete with forces associated with atmospheric pressure acting on the valve flap and diaphragm and the force of the diaphragm and valve springs to continuously open and close the valve flap in rapid succession during operation of the vacuum device.