Tamper-resistant, energy-harvesting switch assemblies
US8592703B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 10, 2011 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Jan 11, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/076
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Tamper-resistant, longer-lasting energy-harvesting switch assemblies that can accommodate longer antennas required for operation in the 315 MHz radio frequency band are provided. In order to accommodate longer antenna that will not fit within the energy-harvesting module, the front major face of the back plate is equipped with a perimetric channel or trough into which a wire antenna can be installed. The problem of rocker wear in prior-art devices caused by abrasive action of the bows is rectified by a redesign of the rocker and the manufacture of a wear-resistant insert that snaps into place at the rear of the rocker. The potential theft problem associated with prior-art devices has been resolved by redesigning the back plate and the retainer clip that engages latches on the redesigned back plate. Non-destructive removal of the retainer clip can be effected only with a special tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.