Indicators for valves
US11506304B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2020 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Apr 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L7/166
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An indicator adapted to provide a visual indication of an over pressure situation in a system. The indicator (also referred to as a pop indicator), includes a main body, a piston that is disposed in the main body, and one or more O-rings disposed around the piston. Initially, the piston is in a first position where the piston is retracted into the body. However, when an over pressure situation occurs, the pressure causes the piston to move in a direction out of the main body against a friction force created by the O-ring. When the piston is moved, i.e., popped, then end of the piston extending out of the body provides a visual indication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.