Push-button electrical switch
US4053726A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1976 |
| Grant date | Oct 11, 1977 |
| Priority date | — |
| Expiry date | Feb 24, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/52
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The illustrated switch comprises a casing, a push-button movable in the casing along a predetermined axis, fixed contact means disposed in the casing opposite the push-button and generally along such axis, an insulating carriage disc disposed in the casing and along the axis at an intermediate point between the push-button and the fixed contact means, the disc being movable toward and away from the fixed contact means, movable contact means mounted on the disc and movable therewith into and out of engagement with the fixed contact means for establishing and breaking an electrical circuit, a first compression spring disposed in the casing between the casing and the disc for biasing the disc and the movable contact means away from the fixed contact means, and a second compression spring disposed between the push-button and the disc for overcoming the strength of the first compression spring and moving the disc to bring the movable contact means into engagement with the fixed contact means when the push-button is moved toward the disc. The push-button is slidable in an opening in the casing toward the disc and into a position in which the push-button is flush with the casing. In this …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.