会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明申请
    • Vacuum opening/closing valve
    • 真空开关阀
    • US20090057600A1
    • 2009-03-05
    • US12222101
    • 2008-08-01
    • Masayuki WatanabeMakoto MiyaharaShunsuke Umezawa
    • Masayuki WatanabeMakoto MiyaharaShunsuke Umezawa
    • F16K31/126
    • F16K31/1262F16K41/10F16K51/02
    • A durable vacuum opening/closing valve connectable with a vacuum chamber and a vacuum pump is arranged to control vacuum pressure in the vacuum chamber by changing an opening degree of an O ring serving as a valve element relative to a valve seat. A predetermined clearance between an outer peripheral surface of a piston and an inner peripheral surface of a cylinder is sealed by a bellofram which changes its shape in association with movement of the piston moved to open or close the valve. The bellofram includes an inclined surface with a predetermined inclination angle and the outer periphery of the piston includes an inclined surface with a predetermined inclination angle, so that an inner diameter of the bellofram in contact with the piston and the outer diameter of the piston are equal when the valve element is in contact with the valve seat.
    • 布置有与真空室和真空泵连接的耐用真空开/关阀,通过改变作为阀元件的O形环相对于阀座的开度来控制真空室中的真空压力。 活塞的外周面和气缸的内周面之间的预定间隙通过与活塞移动以打开或关闭阀的运动相关联而改变其形状的阀门密封。 本发明包括具有预定倾斜角的倾斜表面,并且活塞的外周包括具有预定倾斜角的倾斜表面,使得与活塞接触的内部的内径和活塞的外径相等 当阀元件与阀座接触时。