Negative rate switch methods and systems for resilient actuating device
US7378934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2004 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Jan 9, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/186
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and systems for actuating a negative rate switch. A negative rate switch comprising a plunger and a resilient actuator thereof can be provided, wherein a highest plunger force occurs at a free position and a lowest plunger force occurs at a full over travel position. The negative rate switch can be configured such that when the resilient actuator provides resilient actuating force to overcome a free position force associated with the free position, the plunger moves without interruption through a total range of travel thereof and when the resilient actuating force drops slightly below a full over-travel plunger force associated with the full over travel position, the negative rate switch overcomes the resilient actuating force to return the plunger to the free position thereof without interruption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.