Invention Grant
- Patent Title: Method and apparatus for making stepped rims
- Patent Title (中): 用于制作步进式RIMS的方法和装置
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Application No.: US3779060DApplication Date: 1971-09-16
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Publication No.: US3779060APublication Date: 1973-12-18
- Inventor: SCHRODER P
- Applicant: LEIFELD & CO
- Assignee: Leifeld & Co
- Current Assignee: Leifeld & Co
- Priority: DE2053005 1970-10-28
- Main IPC: B21D53/30
- IPC: B21D53/30 ; B21D22/18
Abstract:
A method and apparatus for manufacturing a stepped rim from a cylindrical ring is provided. The ring is bent outwardly at one end to form a clinch and the opposite end of the ring is indented to form a locking ring groove.
Information query
