Forming method of throttle apparatus for internal combustion engine
US7089663B2 · kind B2 · utility
7Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2004 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Nov 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4998
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A throttle valve and the throttle body are formed substantially simultaneously in the same dies. The melted resin is injected in to a cavity through a pair of valve gates. The gas evaporated from a melted resin and remaining air in the cavity are expelled from the cavity into the atmosphere through a gas purge passage. A first and a second split lines of a first and second insert dies function as the gas purge passage. A shortshot and a corrosion generated by the gas can be avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.