Reed switch with a housing and a pulse generator
US4638276A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Apr 26, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H36/0006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reed switch includes a housing in which extends a stepped bore for slidably receiving a magnet carrying sleeve. The sleeve includes a longitudinal bore which receives a glass tube. The sleeve is slidable with respect to the glass tube. The glass tube encloses a switch element. The longitudinal bore is connected to the environment via pressure-equalizing bores in order to avoid the build-up of a high pressure or a vacuum inside the read switch. Collecting pockets for dirt particles are provided between the sleeve and the housing. The stepped bore opens at one end of the housing. The open end of the housing has an inner chamfer which forms an edge from which fluid easily falls away.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.