Fluid flow indicator
US4819577A · kind A · utility
27Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 20, 1988 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | May 20, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/056
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inexpensive fluid flow indicator capable of use in low flow conditions in a variety of environments, including but not limited to laboratory, industry, and medical applications. Flows are visually indicated by the rotation of balls loosely retained in a longitudinal passageway of the indicator's transparent housing by a flow guide and an outlet port. The flow guide imparts a circumferential or transverse direction to the axial flow of the fluid which causes the balls to revolve about the center line of the indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.