Temperature compensated Bourdon tube gauge
US4682501A · kind A · utility
Inventor
Key dates
| Filing date | Apr 11, 1985 |
| Grant date | Jul 28, 1987 |
| Priority date | — |
| Expiry date | Apr 11, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L7/048
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature-compensated Bourdon tube gauge for indicating a parameter of a pressurized fluid, including a support structure, a Bourdon tube having an open fixed end receiving the fluid and a free closed end carrying an indicating member, a dial member carrying a parameter scale disposed along the path of motion of the indicating member, and a temperature-responsive element for moving the dial member in accordance with a sensed temperature such that the indicating member indicates the fluid parameter on the dial member scale. The temperature-responsive element comprises a bimetallic element connected between the support structure and the dial member. The bimetallic element may be connected to the dial member by a lever having a "variable fulcrum" which varies along the length of the lever in accordance with the shape of a cam with which the lever is maintained in contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.