Patent ID: 6755114
Filing Date: 2004-06-29
Classification: B29C,B65D,B65G,F16K

Abstract:
An air pulser comprising a body having an inner space, a diaphragm having a small hole and stretched in said inner space of said body to partition said inner space into an air supply chamber and an air exhaust chamber, said diaphragm being imparted with an elastic force so as to be normally deformed toward said air supply chamber, an air blast cylinder provided in said air supply chamber and closed by said diaphragm and communicating with said air supply chamber when in its open state, a valve plate provided in said air exhaust chamber to partition said air exhaust chamber into a first chamber and a second chamber, said valve plate being formed with a valve hole, a valve body provided in said second chamber to control the opening of said valve hole, and a permanent magnet provided in said second chamber to support said valve body so as to be movable relative to said valve plate and hold said valve body in a closed state by attracting said valve plate to said valve body by a magnetic force, said body being formed with an air supply port for supplying compressed air into said air supply chamber and an air exhaust port for exhausting air in said second chamber to outside.