Electric valve
US10060311B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 9, 2016 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Mar 9, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2390/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An electric valve may include a valve housing, a valve plate disposed in the exhaust gas passage of the valve housing by a rotation shaft, a heat shield being connected to the valve housing by a bracket and forming a penetration opening to be penetrated by an upper end portion of the rotation shaft, an actuator assembled on the heat shield to decelerate torque of a drive actuator and then to output the decelerated torque, a power delivering member transferring torque of the drive actuator, wherein damping is performed by a power delivering spring disposed between a spring seat mounted the rotation shaft and the worm wheel of the actuator, to the rotation shaft, and a rotation limiting member mounted between the penetration opening of the heat shield and the spring seat corresponding with the penetration opening to limit a rotation angle of the rotation shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.