Dual cylinder pressure equalization system
US10876650B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Jun 22, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/1226
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pressure equalization valve comprises a first pressure cylinder, a second pressure cylinder, an aperture, and a stationary member. The stationary member is located between the first pressure cylinder and the second pressure cylinder. The second pressure cylinder is located within the aperture. A primary piston is located within the first pressure cylinder and a secondary piston is located within the second pressure cylinder. A stem is directly connected to the aperture and the primary piston. The stem includes a fluid passage between the first pressure cylinder and the second pressure cylinder. When a pressurized fluid is introduced into the first pressure cylinder, the pressurized fluid pushes the primary piston and the stem to open the aperture in a linear direction, the pressurized fluid travels to the second cylinder through the fluid passage and pushes against the aperture in the same direction as said first piston further opening the aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.