Method and apparatus for manufacturing a pulley
US5031433A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1990 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Sep 13, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4946
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An appratus and method for manufacturing a pulley having a generally V-shaped groove therein is provided. The apparatus includes a press section and a molding section. The starting material for forming the pulley is a ring-shaped workpiece which is preferably composed of a bendable metal. The apparatus clamps the workpiece about a central annular portion thereof. Other parts of the apparatus bend upper and lower annular portions of the workpiece radially outwardly, thereby forming a V-shaped groove. The pulley is formed by a single thrusting motion of the press section. The bottom portion of the V-shaped groove has a uniform thickness which is not thinned by the action of the press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.