Multi-motion fail-safe operating gate valve
US10851905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2019 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Jun 6, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/066
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve assembly includes a valve body and a valve member configured to translate between an open and a closed position. The valve assembly also includes a bonnet coupled to the valve body and a valve stem coupled to the valve member. The valve assembly also includes an actuator coupled to the bonnet. The actuator includes a first drive mechanism positioned to translate a first driving force to the valve stem, the first drive mechanism being in operation during a normal operating condition. The actuator also includes a second drive mechanism positioned to translate a second driving force to the valve stem, the second drive mechanism being in operation during a fail-safe operating condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.