专利名称：Diaphragm assembly发明人：Yoshinobu Mizusaki申请号：US06/386780申请日：19820609公开号：US04542624A公开日：19850924
摘要：A diaphragm assembly is designed to follow a drop in the level of a workingfluid filled in a reservoir used with a master cylinder for the purpose of cutting off thecommunication between the working fluid and the outside air. The diaphragm includes apair of opposite lower steps in the axial direction. Each of the steps comprises an uprightflat portion and an upper flat portion which form parts of the bottom wall and side wallof the diaphragm, when the level of the working fluid in the reservoir reaches a
predetermined lower limit. The upper flat portions of the steps are inclined to at a givenangle to the horizontal, thus forming an air passage.
申请人：NISSHIN KOGYO KABUSHIKI KAISHA
代理机构：Cantor and Lessler
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