专利内容由知识产权出版社提供
专利名称：Gas pressure-reducing valve
发明人：Youji Nakajima,Kazuki Ishikawa,Yoshio Saito申请号：US10005348申请日：20011207公开号：US06629544B2公开日：20031007
专利附图：
摘要：A gas pressure-reducing valve includes a pressure-reducing chamber forgenerating a gas pressure that acts on one surface of a diaphragm, a valve body that cansit on a valve seat having in its central part a valve hole communicating with the pressure-reducing chamber, and a spring biasing the diaphragm in a direction that detaches the
valve body from the valve seat. A valve housing is formed by conjoining a body, a
partition, and a cover. The partition forms the pressure-reducing chamber between itselfand the body and forms a pressure action chamber between itself and the diaphragm.The cover forms the spring chamber between itself and the other surface of thediaphragm and has the peripheral edge of the diaphragm clamped between itself andthe partition. The partition has a through hole for allowing the valve stem to run throughin an airtight and axially slidable manner and a communicating hole for providingcommunication between the pressure action chamber and the pressure-reducingchamber. The structure of the body can thus be simplified thereby enhancing themachining precision, and the diameter of the pressure-reducing chamber can bedetermined regardless of the diameter of the diaphragm.
申请人：KEIHIN CORPORATION
代理机构：Arent Fox Kintner Plotkin & Kahn, PLLC
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