Silencer shell forming apparatus
US5943891A · kind A · utility
9Cited by
6References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 24, 1997 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | Nov 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D5/015
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a silencer shell forming apparatus, a mandrel is divided into an upper segment and a lower segment as well as both the segments are permitted to move in a vertical direction to dispense with a setup job when a different type of a shell is formed. Further, a drive mechanism is provided to cause both the segments to move in a direction where they become nearer to each other and in a direction where they are separated from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.