发明名称 |
Method of making a cam shaft |
摘要 |
A hollow cam shaft of the type wherein lubricating oil is distributed to the cam portions includes a rod member positioned inside the shaft pipe member and spaced from the inner pipe surface by shaft end members and guide strips to form a reduced, annular volume to be filled with oil during engine start-up. The method of making the hollow cam shaft includes forming the rod member from a resinous material by injection molding, using a removable mold positioned in the pipe through-hole, and, in a preferred embodiment, flowing the resin through the mold cavity and into a recess located in the distal shaft end member, which recess has an enlarged portion for capturing the hardened resin rod end and facilitating mold removal.
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申请公布号 |
US4649011(A) |
申请公布日期 |
1987.03.10 |
申请号 |
US19850841308 |
申请日期 |
1985.03.19 |
申请人 |
NIPPON PISTON RING CO., LTD. |
发明人 |
UMEHA, GENKICHI;URANO, SHIGERU;HIRAKAWA, OSAMU;TAKEGUSHI, SHUNSUKE |
分类号 |
F01L1/04;F01M9/10;F01M11/02;F16H53/02;F16H57/04;(IPC1-7):B29C45/00 |
主分类号 |
F01L1/04 |
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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