Fluid indicator for refrigeration system
US4788929A · kind A · utility
3Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1988 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Jun 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid indicator for viewing the condition of refrigerant flowing therethrough includes a brass body (12) having a cylindrical extending portion (26). The cylindrical extending portion includes a recess (30) bounded by a deflectable wall (28). An aperture (14) which includes a transparent glass pane (36) surrounded by a steel ring (38) is mounted in the recess and fixed therein by braze material. Tubes (16, 18) are brazeable into coupling portions (20, 22) of the body, and the fluid tight character of the indicator is unaffected despite failure to use a chill block, wet rag or other cooling device during the brazing operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.