Composite gear blank
US9205611B2 · kind B2 · utility
5Cited by
13References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2010 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Jan 11, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/211
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Composite gear blanks are manufactured by placing a rigid centerpiece in a mold, optionally inertizing the mold, filling the mold by adding a liquid reactive mixture around the centerpiece, applying static pressure to the mold and polymerizing the reactive mixture so as to form a plastic outer part surrounding the centerpiece. The composite gear blanks thus made have improved values of normal and shear adhesion strength both at room temperature and at elevated temperatures of up to 120° C. and are particularly suited for making worm gear parts of automotive electronic power steering systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.