Method of manufacturing solid wheel rims
US4143533A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1977 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Jun 1, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49529
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a solid wheel rim having a wheel rim flange at one end of a wheel rim base and a spring-ring groove at an opposite end of the base, from a rolled and longitudinally welded sheet-metal ring of a predetermined inner diameter having a reduced wall thickness over at least a part of its length, includes the expansion of a portion of the ring to produce an annular groove zone having an inner diameter equal to the predetermined inner diameter, an enlarged zone having an inner diameter greater than such predetermined diameter, and a tapered zone located between the annular groove and enlarged zones, the wall thickness of the ring being reduced during a pressing operation, and the spring-ring groove as well as the wheel rim flange being formed during a rolling operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.