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1. 发明授权

US3789881A Refrigeration service valve 失效
标题翻译：制冷维修阀
公开(公告)号：US3789881A
公开(公告)日：1974-02-05
申请号：US3789881D
申请日：1972-03-31
申请人： WEATHERHEAD CO
发明人： KOZULLA R , SILAGY R
IPC分类号： F16K11/044 , F16K41/18 , F16K11/02
CPC分类号： F16K41/18 , F16K11/044 , Y10T137/86879
摘要： A valve assembly and method of making the same particularly suited for use as a double seat refrigeration valve comprising a body which has an internal poppet receiving chamber and a pair of valve seats at opposite ends of the chamber with one seat associated with an axial port and the other seat associated with an axial stem guide bore. The poppet has an initial outer diameter at least as small as the axial port seat to permit it to be positioned in the chamber through the axial port and is adapted to be plastically expanded radially outwardly by a flaring tool to a final diameter larger than the axial port seat so it is capable of sealing the port to prevent fluid communication between the axial port and a second port in the chamber. The poppet includes a sealing surface adapted to seal the stem guide bore seat when the poppet is moved away from the axial port seat.
摘要翻译：一种阀组件及其制造方法，特别适用于双座制冷阀，其包括主体，该主体具有内部提升阀接收室和在该腔室的相对端处的一对阀座，其中一个阀座与轴向端口相关联，另一个座椅与轴向杆导向孔相关联。提升阀具有至少与轴向端口座一样小的初始外径，以允许其通过轴向端口定位在腔室中，并且适于通过扩口工具径向向外膨胀至最大直径大于轴向端口座，因此能够密封端口，以防止腔室中的轴向端口和第二端口之间的流体连通。提升阀包括密封表面，当密封件从轴向端口座移动时，该密封表面适于密封阀杆引导孔座。

2. 发明授权

US3712683A Brake warning switch 失效
标题翻译：制动器警告开关
公开(公告)号：US3712683A
公开(公告)日：1973-01-23
申请号：US3712683D
申请日：1970-03-11
申请人： WEATHERHEAD CO
发明人： KEADY F , SILAGY R
IPC分类号： B60T8/26 , B60T17/22 , B60T11/34
CPC分类号： B60T17/226 , B60T8/26
摘要： A fluid pressure switch unit is disclosed for use in a motor vehicle dual hydraulic brake system having a front brake circuit and a rear brake circuit. The rear brake circuit includes a pressure reducing valve for preventing premature lock-up of the rear wheel brakes. A fluid pressure failure in the front circuit operates the switch unit to actuate a warning signal, and the valving mechanism includes a bypass opening in an insert member disposed in one end of a bore in the switch unit housing. The bypass opening is normally closed by a valve member which is slidably carried by the switch piston. Movement of the switch piston to actuate the warning device moves the valve member away from the bypass opening to bypass the pressure reducing valve and supply full pressure to the rear brakes. When the switch piston is returned to a centered position, the bypass opening is again closed by the valve member to return the proportioning valve to the circuit.
摘要翻译：公开了一种用于具有前制动电路和后制动电路的机动车辆双液压制动系统中的流体压力开关单元。后制动回路包括用于防止后轮制动器过早锁止的减压阀。前部回路中的流体压力故障操作开关单元致动警告信号，并且阀机构包括布置在开关单元壳体中的孔的一端中的插入件中的旁路开口。旁路开口通常由可由开关活塞可滑动地承载的阀构件封闭。开关活塞的运动以致动警告装置使阀构件远离旁路开口绕过减压阀并向后制动器提供全压。当开关活塞返回到中心位置时，旁路开口再次被阀构件关闭，使比例阀返回到回路。

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