Rotary multiple capacitive switch
US5710400A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Feb 23, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/94073
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A stalk operated switch assembly having a stalk or lever end-mounted on a housing includes a button on the free end which is user rotatable for effecting rotation of a cam within the housing. The housing includes a plurality of capacitive switches aligned thereon. Each switch is made by applying alternate layers of conductive and dielectric ink and curing to form individual pairs of spaced capacitive plates. A conductive elastomer pad is disposed over each pair of plates and compressed against the plates by an individual actuator for each pad. The individual actuators are moved by one of plural concentric cam tracks formed on the rotor. The stalk type rotary multiple capacitive switching assembly has application for automotive windshield wiper delay circuit control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.