Method of making a sintered pulley hub construction
US4090284A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1977 |
| Grant date | May 23, 1978 |
| Priority date | — |
| Expiry date | Apr 5, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49456
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sintered pulley hub construction for mounting on a bottom wall of a sheet metal pulley cup. A pair of tubular members is pressure formed in a green compact state from a metal powder mixture. One of the members has a cylindrical body which terminates at one end in an outwardly extending annular flange which forms a hub pulling flange. The other member has an interior annular cavity formed in one end and a radially outwardly extending annular flange formed on the other end. The cylindrical body of the one member is telescopically received within the annular cavity of the other member. The members are joined by sintering to form an integral homogeneous body. The outer surface of the other member has a cylindrical portion extending axially between the radial end flange and an annular shoulder for receiving an axially extending flange of a pulley cup, with the shoulder providing a zone for welding the pulley cup to the hub. The method of forming the improved hub includes the steps of separately pressure-forming each of the tubular members in a green compact state in a pair of molds. Then a cylindrical end portion formed on one of the tubular members is telescopically mounted within an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.