公开(公告)号：US06620361B1

公开(公告)日：2003-09-16

申请号：US10191945

申请日：2002-07-09

申请人： Scott Longtin ,  Stephen J. Carr ,  Frederick R. Hatch ,  Jon A. Chandler ,  Gary B. Drake ,  Ronald Maurice Noteboom, II ,  Michael J. Myers

发明人： Scott Longtin ,  Stephen J. Carr ,  Frederick R. Hatch ,  Jon A. Chandler ,  Gary B. Drake ,  Ronald Maurice Noteboom, II ,  Michael J. Myers

IPC分类号： B29C4514

CPC分类号： F01D11/003 ,  B29C43/18 ,  B29C45/0055 ,  B29C45/14336 ,  B29C45/14467 ,  B29C2045/0058 ,  B29C2045/14459 ,  B29D99/0053 ,  B29K2021/00 ,  B29K2627/18 ,  B29L2031/26 ,  F02C7/28 ,  F16J15/328 ,  Y10S277/924

摘要： A method of fabricating a fluid seal for sealing a relatively rotatable member, wherein the fluid seal has an elastomeric sealing member bonded to a PTFE insert. A wafer of PTFE material has a body portion and an end portion of a greater thickness than the body portion. The wafer is placed in a mold cavity with one side of the wafer opposed to a surface portion of the mold cavity. Elastomeric material is forced into the mold cavity to form a molded preform of the elastomeric sealing member and bond the preform to an opposite side of the wafer. The molded preform and bonded wafer are removed from the mold cavity. The end portion of the wafer and an end portion of the preform are trimmed to form the fluid seal.

摘要翻译： 一种制造用于密封可旋转构件的流体密封件的方法，其中所述流体密封件具有结合到PTFE插入件上的弹性体密封构件。 PTFE材料的晶片具有比主体部分更大的主体部分和端部部分。 将晶片放置在模具腔中，其中晶片的一侧与模腔的表面部分相对。 弹性体材料被迫进入模腔中以形成弹性密封件的模制预成型件，并将预制件粘合到晶片的相对侧。 将模制的预成型件和接合的晶片从模腔中移除。 晶片的端部和预制件的端部被修整以形成流体密封。

公开(公告)号：US06213476B1

公开(公告)日：2001-04-10

申请号：US09146287

申请日：1998-09-03

申请人： Jon A. Chandler ,  Gary B. Drake ,  Stephen J. Carr

发明人： Jon A. Chandler ,  Gary B. Drake ,  Stephen J. Carr

IPC分类号： F16J1532

CPC分类号： F16J15/328 ,  F16J15/3244 ,  F16J15/3256 ,  F16J15/3284

摘要： A lip-type fluid seal (10) for a shaft includes a composite sealing lip (26) having an elastomeric portion (32) and a PTFE portion (36). The elastomeric portion (32) includes a lip edge (33) that extends circumferentially continuously to seal the adjacent lip edge (37) of the PTFE portion (36) from any contaminants on the elastomeric side (28) of the seal (10). The PTFE portion (32) has a greater hardness and modulus of elasticity which serves to limit the wear of the elastomeric portion (32) and to induce hydrodynamic surface deformations on the elastomeric lip portion (32) during operation to enhance the exclusion of contaminants. The PTFE lip edge (37) performs well under low temperature and/or low lubricity conditions and its relative hardness protects the elastomeric lip edge from excessive wear.

摘要翻译： 用于轴的唇形流体密封件（10）包括具有弹性体部分（32）和PTFE部分（36）的复合密封唇缘（26）。 弹性体部分（32）包括唇缘（33），其沿周向连续延伸以将PTFE部分（36）的相邻唇缘（37）与密封件（10）的弹性体侧（28）上的任何污染物密封。 PTFE部分（32）具有更大的硬度和弹性模量，其用于限制弹性体部分（32）的磨损并且在操作期间在弹性体唇部（32）上引起流体动力学表面变形，以增强排除污染物。 PTFE唇缘（37）在低温和/或低润滑条件下表现良好，其相对硬度可保护弹性唇缘免受过度磨损。