Push button slider switch
US8466381B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2011 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Dec 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/365
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A push button switch includes a hollowed housing, an electric switching circuit coupled to the hollowed housing and a stack of non-conductive sliders disposed within a narrow recess in the housing. An array of externally accessible push rods extends vertically through the housing and is used to longitudinally displace certain sliders into selective engagement with movable contacts in the electric switching circuit. A plurality of outwardly protruding projections are formed on at least one of the front and rear surfaces of alternating sliders, each projection being generally circular in transverse in cross-section and in the range of approximately 0.001 inches to 0.004 inches in height. The entire surface contact established between adjacent sliders is achieved through the one or more projections, thereby reducing the frictional forces experienced within the stack during slider displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.