Sliding piston pressure indicator
US9513180B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2014 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Dec 17, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid pressure indicating device is disclosed. The pressure indicating device includes a housing defining a cylindrical bore therein, and a piston movably disposed within the cylindrical bore. The housing includes a first portion that is permeable to visible light, a first end member, and a second end member opposite the first end member. A first variable volume is defined by the cylindrical bore, the piston, and the first end member of the housing. An inlet port is defined by the first end member of the housing and is in fluid communication with the first variable volume. A piston bypass channel is disposed outside the cylindrical bore and is in fluid communication with the inlet port. An outlet port is defined by the second end member, such that the outlet port is in fluid communication with the piston bypass channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.