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专利名称：Block and bleed valve 发明人：Dan Benson
申请号：US07/789501
申请日：19911108皿组词
感恩相遇的句子>五行属木的行业公开号：US05168893A
水瓶座是几月几日出生
公开日：
19921208
专利内容由知识产权出版社提供新概念物理
摘要：A valve for u with a first working fluid conduit and a cond working fluid conduit, the valve includes a valve body with a valve bore formed therein. A piston is slidably dispod within the valve body. There is a first opening and a cond opening formed within and defined by the valve body. The first opening is in communication with the first working fluid conduit and the cond opening is in communication with the cond working fluid conduit. Displacement of the piston in a first direction to a first position results in restriction of working fluid passage through the cond working fluid conduit. Displacement of the piston in a cond direction, oppod to the first direction, to a cond position results in restriction of working fluid passage through the first working fluid conduit. There is a spring which bias the piston into the cond position. There is also a variable displacing fluid pressure actuation device capable of overcoming the bias of the spring for displacing the piston into the first position.
申请人：INGERSOLL-RAND COMPANY
慢三步图解代理人：Glenn B. Foster
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