Negative rate snap-acting switch apparatus and method
US6847000B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2003 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Nov 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/186
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative rate snap-acting switch apparatus and method is disclosed, which generally includes a plunger associated with an actuating lever, a stationary anchor, a moveable contact, and at least two stationary contacts. The negative rate snap-acting switch apparatus also includes a snap-spring assembly reactive to the actuating lever, wherein the snap-spring assembly is assembled into the stationary anchor and the actuating lever to form a spring-anchor-lever assembly thereof including a central spring member loaded into an axial compression and persuaded to bend into a post-buckled elastic mode shape thereof to form a negative rate snap-acting switch apparatus in which the moveable and the stationary contacts are responsive to an actuating force derived from the snap-spring assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.