Stem assembly for a valve
US10253887B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2018 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Jan 5, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K39/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A stem assembly for a valve including a shaft having a longitudinal axis and a first end having a cross section less than a cross section of the shaft, and a protrusion near the first end extending away from the axis. In response to the first end and the protrusion being positionable inside a compartment of a valve plug having an opening in fluid communication with a fluid of a valve during operation of the valve, the first end and the protrusion being movable between a first position and a second position relative to the valve plug. In the first position, the first end blocking the opening for preventing fluid flow therethrough, and in the second position, the first end being movable away from the compartment opening for permitting fluid flow through the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.