Black-powder-resistant through conduit valve
US10683941B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Jul 25, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve having improved resistance to black powder wear and damage includes a valve body defining a flow passage therethrough, an upper bonnet assembly defining a stem opening, and a stem passing through the stem opening. The valve also includes an elongate gate having a proximal end operatively attached to the stem, a distal end, an orifice sized and adapted to permit essentially unopposed passage of material through the gate when the orifice is aligned with the flow passage of the valve body, the orifice being located proximate the proximate end of the gate, and a solid portion sized and adapted to substantially completely block the flow of material through the gate when the solid portion is aligned with the flow passage of the valve body, the solid portion being located distally of the orifice such that the orifice is located between the proximal end and the solid portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.