专利名称：Declutchable valve override 发明人：Petrus J. R. Schils
申请号：US06/525655
申请日：19830823血压新标准
描绘春天的诗句公开号：US04616803A
初五习俗
孜孜不倦是什么意思>北京地铁广告折御卿公开日：
19861014
专利内容由知识产权出版社提供vga接口接线图
摘要：The invention compris an improved override and an interrelated valve system.
A main valve has an actuator, the actuator in turn having a control for communicating a control signal to the actuator for lectively causing the actuator to place the main valve in its open or clod position. The override is associated with the main valve and lectively shiftable between an engaged mode in which the override is operatively connected with the main valve for moving the main valve between its open and clod positions, and a dingaged mode in which the operative connection between the override and the main valve is interrupted, whereby the main valve may move independently of the override. A shut-off functionally interconnects the override and the actuator control and is operative, upon shifting of the override to its engaged mode, to block the control signal from the actuator. The override includes a housing, a driven gear in the housing connected to the valve element of the main valve, a clutch shaft mounted in the housing for rotation about its own axis, a drive shaft rotatably mounted in the clutch shaft, with the axis of the drive shaft parallel to but eccentrically spaced from the axis of the clutch shaft, and a drive gear generally oppod to the driven gear and coaxially carried by the drive shaft for rotation therewith. By rotation of the eccentric clutch shaft, the two gears may be engaged and dingaged.生日活动
申请人：KEYSTONE INTERNATIONAL, INC.
代理机构：Browning, Bushman, Zamecki & Anderson 更多信息请下载全文后查看
