公开(公告)号：US06289912B1

公开(公告)日：2001-09-18

申请号：US09349317

申请日：1999-07-08

申请人： Thomas J. McPeak ,  James C. Linder ,  Jeffrey J. McKenzie ,  Steven A. Melbostad ,  Michael W. Johnson

发明人： Thomas J. McPeak ,  James C. Linder ,  Jeffrey J. McKenzie ,  Steven A. Melbostad ,  Michael W. Johnson

IPC分类号： F16L914

CPC分类号： F16K7/063 ,  Y10T137/0491

摘要： A valve has a contractible valve element formed of an inner laminae of PFA, an outer laminae of PTFE with the outer laminae having a boss to provide positive compression and positive distension of the valve element. The portion that constrict is welded to a PFA tubular end portion thus providing the advantages of a PTFE laminae with a boss and the PFA what it surfaces. The valve utilizes a valve mechanism which has a yoke which moves radially towards and away from the contractible valve element with linkages extending from yoke arms which connect to opposite sides of the contractible valve element. The valve element may thus be positively closed and positively opened. The hermetic seal between the outer PTFE laminae and the inner PFA laminae causes the inner laminae to extend outwardly when the outer laminae is positively distended thereby allowing the valve function where the fluid being controlled is under a negative pressure. The invention also includes the method of manufacturing the multiple layered valve element.

摘要翻译： 阀具有由PFA的内层形成的收缩阀元件，PTFE的外层，外层具有凸台，以提供阀元件的正压缩和正膨胀。 收缩的部分焊接到PFA管状端部，从而提供具有凸台的PTFE薄板和PFA表面的优点。 该阀利用阀机构，该阀机构具有从可收缩的阀元件径向移动并远离可收缩阀元件的轭，该连杆从连接到可收缩阀元件的相对侧的轭臂延伸。 因此，阀元件可以被正向闭合并且被正面打开。 外部PTFE薄片和内部PFA层之间的气密密封件使得当外层被正向膨胀时内层向外延伸，从而允许控制流体处于负压下的阀功能。 本发明还包括制造多层阀元件的方法。

公开(公告)号：US06227224B1

公开(公告)日：2001-05-08

申请号：US09349317

申请日：1999-07-08

申请人： Thomas J. McPeak ,  James C. Linder ,  Jeffrey J. McKenzie ,  Steven A. Melbostad ,  Michael W. Johnson

发明人： Thomas J. McPeak ,  James C. Linder ,  Jeffrey J. McKenzie ,  Steven A. Melbostad ,  Michael W. Johnson

IPC分类号： F16L914

摘要： A valve has a contractible valve element formed of an inner laminae of PFA, an outer laminae of PTFE with the outer laminae having a boss to provide positive compression and positive distension of the valve element. The portion that constrict is welded to a PFA tubular end portion thus providing the advantages of a PTFE laminae with a boss and the PFA what it surfaces. The valve utilizes a valve mechanism which has a yoke which moves radially towards and away from the contractible valve element with linkages extending from yoke arms which connect to opposite sides of the contractible valve element. The valve element may thus be positively closed and positively opened. The hermetic seal between the outer PTFE laminae and the inner PFA laminae causes the inner laminae to extend outwardly when the outer laminae is positively distended thereby allowing the valve function where the fluid being controlled is under a negative pressure. The invention also includes the method of manufacturing the multiple layered valve element.