Pressure gauge
US9995605B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 15, 2016 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Apr 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A Bourdon tube pressure gauge includes: a Bourdon tube; a rotary piece rotatably attached to a first shaft arranged near a tip of the Bourdon tube; a pointer including a second shaft arranged on a side facing an outer periphery of the fan-shaped portion of the rotary piece; a first permanent magnet provided on an outer peripheral surface side of a fan-shaped portion of the rotary piece; a second permanent magnet provided at the second shaft. An outer peripheral surface of the first permanent magnet and an outer peripheral surface of the second permanent magnet each has N pole and S pole alternately magnetized at equal pitches. A magnetic member configured to relax force by which the second permanent magnet is attracted to the first permanent magnet is provided across the second permanent magnet from the first permanent magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.