Plunger or piston with hardened insert
US12404942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2020 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Aug 12, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/106
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve assembly including: a hardened insert coupled with a hardened insert carrier; and a valve body coupled with a valve insert, wherein, in a closed configuration of the valve assembly, the valve body contacts a primary sealing surface of the hardened insert and the valve insert contacts an initial sealing surface of a hardened insert carrier to prevent fluid flow through the valve assembly, and, in an open configuration of the valve assembly, the valve body does not contact the primary sealing surface of the hardened insert and the valve insert does not contact the initial sealing surface of the hardened insert carrier to allow fluid flow through the valve assembly, wherein the hardened insert carrier comprises a reciprocating element, a replaceable valve carrier (RVC), or a pump fluid end body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.