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US5678439A · kind A · utility
5Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1995 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Nov 29, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D37/18
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An annular device (10) particularly for use as a spacer between dies (200) in a drawing and wall ironing process, the device including an outer delivery channel (30) which is linked to an inner delivery channel (40) by angled slots (50), so that liquid passing from the outer to the inner channel merges in the inner channel to form a vortex of fluid. The device also includes a lip (42) on the wall of the inner channel adjacent to the bore of the device, which serves as directing means to force the merged vortex of liquid out of the spacer in a longitudinal manner for cooling, lubricating and washing adjacent members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.