Flowswitch having reduced number of parts
US7105756B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2005 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Sep 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/405
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flow switch includes a straight, rigid paddle arm and a hub formed mid-length of the paddle arm. An elongate cylindrical member and an elongate paddle handle are formed integrally with the hub and extend from the hub in opposite radial directions. A cylindrical magnet is disposed within a hollow interior of the cylindrical member. A flat paddle is formed integrally with the elongate paddle handle at a radially outermost end of the paddle handle. A transparent top housing houses a flat magnet that attracts the cylindrical magnet and causes the paddle arm to pivot into a position of repose. The cylindrical magnet pivots away from the position of repose into close proximity with a reed switch when the strength of the fluid flow exceeds the magnetic attraction. The reed switch is housed in the top housing in diametrically opposed relation to the flat magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.