Composite brake drum and method for producing same
US6601284B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2000 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Aug 16, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49991
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A composite brake drum for use in a drum brake assembly includes a one-piece mounting flange and shell and a liner cast integrally in a shell portion thereof. The method for forming the composite brake drum of this invention includes the steps of: (a) providing a generally circular metal blank having an initial pilot hole inner diameter; (b) spin forming the metal blank to produce a one-piece brake drum component defining a center longitudinal axis and including a cylindrical shell having a squealer band which defines a squealer band outer diameter, a mounting flange extending radially inwardly from one end of the shell toward the center longitudinal axis, and an annular lip extending radially inwardly from an opposite end of the shell toward the center longitudinal axis, and wherein the shell, the flange, and the lip cooperate to define a cylindrical mold cavity; (c) subsequent to step (b), centrifugally casting a liner in situ within the mold cavity of the brake drum component to thereby produce the composite vehicle brake drum; and (d) subsequent to step (c), machining the initial pilot hole inner diameter to a final pilot hole inner diameter by locating off of the squealer band…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.