Multiposition electrical switch
US4308434A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1980 |
| Grant date | Dec 29, 1981 |
| Priority date | — |
| Expiry date | Apr 28, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A compact nonsnap switch has an actuator moveable in arcuate paths from center off to actuated positions on a shaft which pivots about first shaft shoulders on outwardly discrete casing shoulders. The shaft has second pivot shoulders located in the same diametric plane as the casing shoulders for cooperation with an elongated movable contact member which is normally biased in columnar alignment with the shaft by a coil spring. Fixed contact members are aligned below the casing shoulders for contact by the end of the movable contact member. The coil spring also biases the first shaft shoulders against the casing shoulders through the movable contact member and allows double hinge action to take place whereby the movable contact member will normally pivot with the shaft until the lower end contacts a fixed contact causing the movable contact member to separately pivot on both the actuator shaft and the fixed contact to produce a wiping contact engagement and noncolumnar alignment of the shaft and movable contact member. An abutment means on the casing is engagable by the movable contact member in any of the actuated modes whereby accidental pivotal movement of the actuator upon casin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.