Expanding gate valve assembly with pressure equalization system
US10619747B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2017 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Apr 27, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L41/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve for a pressurized pipe includes a paddle member with a lower proximal portion and a pair of spaced-apart and leg portions that form an outer edge and an inner edge. A cartridge includes a valve stem channel extending through a distal portion and through a conduit and terminating at a proximal opening in a proximal portion of the cartridge. The proximal portion of the cartridge includes a slot for accommodating the inner edge of the paddle member. In a pre-compression configuration, the inner edge of the paddle member is spaced-apart from the proximal opening of the conduit and in a post-compression configuration, the inner edge of the paddle member engages and seals the proximal opening resulting in a built-in check-valve that is open when the paddle member is in the pre-compression configuration and closed when the paddle member is in the post-compression configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.