Unloading valve and combined valve type buffer cylinder
US12196229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2021 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Sep 20, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/428
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An unloading valve includes a valve body, a valve trim, a return spring, a damping hole, and an unloading groove. A combined valve includes the unloading valve and a throttling valve. The throttling valve includes a buffer stopper and a buffer chamber. A piston rod assembly of the combined valve type buffer cylinder is provided in a cylinder body. The cylinder body includes a cylinder head flange, a cylinder bottom, and a cylinder barrel. The piston rod assembly includes a guide sleeve, a piston, and a piston rod. The combined valve is provided on the cylinder. The system is located in an unloading state in a buffering process to reduce the energy loss and heat buildup of the system, prevent the pressure impact of buffering on the system, make the system more reliable, and lower the difficulty of the original buffer valve in performance matching, installation and debugging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.