Internally-sealed one-piece external thread ball valve
US12215797B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2020 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | Jan 5, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K5/0689
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An internally-sealed one-piece external thread ball valve includes a valve seat gland and a left sealing gasket. The valve seat gland and the left sealing gasket are installed into a valve body. The contact part of the valve body and the valve seat gland is an internal thread. The contact part of the valve body and the left sealing gasket is a smooth inner circular surface. The left sealing gasket is in an inverted trapezoidal shape with a thin inner part and a thick outer part. The left sealing gasket expand outwards under an action of pressure formed by tightening a left nut during valve assembly. The outer circular surface of the left sealing gasket and a smooth inner circular surface of the valve body form sealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.