Throttle valve device
US11346291B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 13, 2020 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Dec 15, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/221
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A throttle valve device includes a body, a shaft, a pair of bearings, a valve, a motor, a valve gear, a coil spring, a first guide, and a second guide. At least one of the first guide and the second guide includes a circular holder that faces an end surface of the coil spring, a spring-end holding portion that outwardly protrudes from the circular holder and is configured to hold a spring end of the coil spring, a hub that is rotatably connected to the shaft, and a connecting portion that connects the hub and the circular holder. The first guide is in contact with a lever only at an end surface of the hub. The second guide is in contact with one of the pair of bearings, which is located close to the valve gear, at an end surface of the hub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.