Method and apparatus for manufacture of brake drums
US4436139A · kind A · utility
11Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1981 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Jul 20, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2250/0007
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for manufacture of brake drums, particularly tri-metallic drums of the type comprising a preformed brake liner, a mounting disc, and an aluminum shell cast around and joining the liner and disc into a rigid structure. The apparatus includes a mandrel with a plurality of springs for internally resiliently engaging the brake liner and locating the same in accurate position. The mounting disc is likewise accurately positioned on a mold surface, and the mold is closed to form a cavity for casting of the shell coaxially with the liner and disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.