Snap action switch
US6051800A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1998 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Aug 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H21/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved snap action or sump pump switch is disclosed which conventionally includes a housing defining a depression therein and being open on a bottom side thereof; a movable, U-shaped contact support bridge, a coiled actuator spring containing a standard pivot bushing on one end thereof and having an opposite end fitted against the bridge, and an elongated actuator arm or operating lever having a rounded end projecting into the pivot bushing and a pair of laterally projecting, cylindrically shaped ears adapted for disposition in sockets contained in and defined by the housing. Once assembled, these components are held in a stable cooperative relationship relative to one another due to the actuator ears being disposed in forwardly opening, rearwardly projecting slots defined by shoulders projecting from rear inside walls of the housing such that the compressed spring continually urges the ears of the actuator arm rearwardly against the bases of the slots. The switch components are thus easily assembled by hand or otherwise into the required cooperative relationship within the housing and do not require extraordinary means for holding them in the required relationship prior to an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.