Magnetic proximity switch system with slide-by anti-defeat machanism
US5874878A · kind A · utility
2Cited by
15References
19Claims
0Family size
Inventor
Key dates
| Filing date | Apr 28, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Apr 28, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H36/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A non-magnetic plate, or spacer block, of is attached to the side of the switching assembly of a high security switch system. Alternatively, the actuator assembly may have an extended housing. As a result, a second actuator assembly may not be substituted for the first actuator assembly by placing the second actuator assembly on the side of the first actuator assembly and slid under the security switch assembly as the first actuator assembly is moved away for the purpose of defeating the security switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.