Heating conductive wire-like element for the manufacture of a washer fluid heating and carrying pipe with controlled linear heating power, and associated heating pipe and wiper device
US9902374B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2014 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Jul 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/037
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating conductive wire-like element is disclosed, having a heating conductive strand arranged in a helix around a central fibre, of which the pitch between strands in at least a first zone of the wire-like element is of a first value for producing a first linear heating power, and of which the pitch between strands in at least one second zone of the wire-like element is of a second value smaller than the first value in order to produce a second linear heating power higher than the first linear heating power. A washer fluid heating and carrying pipe including at least one fluid circulation canal situated near a heating conductive wire made from the aforementioned wire-like element is also disclosed. A wiper device for a glazed surface of a vehicle incorporating at least one such pipe, and a method of manufacturing a pipe is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.