Self-contained gate valve column loading prevention mechanism
US10107413B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2016 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Aug 4, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/314
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve assembly includes a valve body with a flow passage intersected by a valve cavity. A valve member is axially movable in the valve cavity between a closed position and an open position, the valve member having an opening that registers with the flow passage when the valve member is in the open position. A valve stem is threadingly connected to the valve member, the valve stem rotatable to move the valve member between the closed position and the open position. A collar assembly is located within a slot of the valve member and circumscribes the valve stem, the collar assembly having an annular collar shoulder. The valve stem has an annular load shoulder sized to engage the collar shoulder, limiting axial movement of the valve member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.