Foil-type switching element, in particular for use in collision detection systems
US8018319B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Mar 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/078
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A foil-type switching element comprises a first carrier foil and a second carrier foil arranged at a certain distance from each other by means of a spacer, which comprises one opening (18) defining an active area. An elongate resistive layer (20) is provided on the second carrier foil within the active area while elongate 5 shunt means (22) are arranged on the first miler foil within the active area and facing the resistive layer (20). The form of the opening (18) in the spacer is such that the active area generally tapers in the longitudinal direction of the elongate resistive layer (20), so that when pressure is applied on the switching element, the shunt means (22) shunt a portion of the resistive layer (20) that 10 progressively increases with pressure, from the broad end of the spacer opening (18) towards its narrow end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.