Oil cooler and method for forming it
US4194560A · kind A · utility
20Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1978 |
| Grant date | Mar 25, 1980 |
| Priority date | — |
| Expiry date | Sep 20, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S165/916
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A built-in oil cooler, comprising an outer tube and an inner tube, the latter tube is provided with a plurality of dent and projection portions alternately formed on its surface in axial direction thereof. Said inner tube is inserted in said outer tube to keep its outside face having no dent portion in contact with inside face of said outer tube, forming oil space between both of said tubes. Oil within said oil space flows zigzag to assure very good heat transfer rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.