Actuator for a pilot valve
US11853085B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2020 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | May 28, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/124
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An actuator for a pilot valve, including a housing, a piston movably mounted in the housing and an actuator chamber defined between the piston and the housing. The actuator includes a control fluid feed for introducing a fluid into the actuator chamber to control fluid pressure, with the fluid pressure acting on the piston. The actuator also includes an actuation member for acting on the pilot valve and a loading spring between the piston and the actuation member. The loading spring is arranged to bias the piston against the fluid pressure in the actuator chamber. The control fluid feed controls the fluid pressure so the fluid pressure acts on the piston against the bias of the loading spring to control the biasing force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.