发明名称 |
Method for manufacturing a sealing ring |
摘要 |
A method for manufacture of a sealing ring with a flanged sealing lip having hydrodynamically acting return transport properties in which a sealing lip is first generated by extrusion of a plastically deformable material through a ring nozzle having rotating inner and outer surfaces which are rotated relative to each other to impart a helical motion to the extruded material; the hydrodynamically acting return transport properties being a microscopically fine pleating of the surface of the extruded hollow cylinder. The extruded cylinder is then solidified and cut to a predetermined length. The cylinder is then widened in the radial direction at its front end by an assembly tool which shapes the cylinder into a trumpet-shaped sealing ring with a flanged sealing lip.
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申请公布号 |
US4861536(A) |
申请公布日期 |
1989.08.29 |
申请号 |
US19870062476 |
申请日期 |
1987.06.12 |
申请人 |
FIRMA CARL FREUDENBERG |
发明人 |
GRAF, GUNTER;GROSS, HEINZ;SPONAGEL, STEFAN |
分类号 |
B29C43/00;B29C57/00;B29D99/00;F16J15/32 |
主分类号 |
B29C43/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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