Printed wiring unit for horn switch
US4899020A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Aug 25, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/1476
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to printed wiring units to be used for horn switches and others, comprising an insulative base made of resin strong in corrosion resistance against an etching reagent to be used in pre-treatment for plating, a pattern base being shaped in substantially the same with the printed wiring pattern disposed on said insulative base and being made of resin weak in corrosion resistance against said etching reagent and a conductive plating layer formed on said pattern base. The present invention also relates to horn switches provided on steering wheels of automobiles, comprising a base plate in a pad portion a protruding horn contact extending through the upper surface of a housing disposed on said base plate and operating in correspondence with the movement of a horn button on a pad portion, a contact member of said horn contact protruded on the side of said base plate, a biasing member disposed between said base plate and said horn contact to urge said horn contact to be spaced apart from the base plate and being conductable to said contact member, one electrode portion disposed on said base plate and being conductive to said biasing member and the other elect…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.