Float switch
US8749191B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2010 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Jul 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H36/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A float switch includes a floater (106), a float leader (105), a reed pipe detection device and a relay (101). The floater (106) is sleeved on the float leader (105), and can slide freely. The reed pipe detection device comprises a high-level reed pipe (108), a low-level reed pipe (109) and a magnet (107). The float leader (105) is hollow. The high-level reed pipe (108) and the low-level reed pipe (109) are located in a high level and a low level inside the float leader (105) respectively. The magnet (107) is provided inside the floater (106). A motor is controlled by the relay (101) in the float switch. The motor begins to work when the relay (101) is switched on, and the motor stops working when the relay (101) is switched off. The switch has a long service life, high reliability and an excellent waterproof property. The float switch has a simple manufacture and installation process, less fraction defective and condemnation factor, thus further reduces the cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.