Multi-stepped pulley, method of manufacturing same, and apparatus for manufacturing same
US6071205A · kind A · utility
7Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | May 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4946
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A multi-stepped pulley, and a method and apparatus for manufacturing the same, wherein the mechanical strength is increased while keeping down an increase of mass and a rise of manufacturing costs by pressing against portions of a surface of a hollow metal material having a circular cross-section corresponding to a connection portion of a plurality of pulleys by pressing rollers and simultaneously crushing the material in an axial direction so as to integrally form first and second rims, first and second webs, and a connection portion thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.