Expanding gate valve assembly
US9562613B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2012 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Sep 28, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/523
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An expanding gate valve assembly includes a segment and a gate Inner faces of the segment and gate are configured for slidable contact and angled faces of the segment and gate are configured for slidable contact to form a first gate assembly interface. The first gate assembly interface can further include a tab on the gate configured to contact a base surface of the segment to form a second gate assembly interface. A spring can be coupled between the gate and the segment to maintain at least the first gate assembly interface. The tab can be disposed below the segment to provide a lifting engagement with the base surface of the segment. The first gate assembly interface can be ledge-free.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.