Laminar heating elements with customized or non-uniform resistance and/or irregular shapes and processes for manufacture
US10841980B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2018 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Sep 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/037
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Laminar heaters having a laminar heating element with a pair of electrically conductive busbars connected to opposite ends of the heating element and a plurality of areas. The heater has a first electrical resistance in a first area and a second electrical resistance in a second area. At least one of the first area or the second area comprises a plurality of perforations, and the difference between the first electrical resistance and the second electrical resistance arises from a difference in a perforation characteristic of the first portion relative to the second portion. A plurality of heaters or heating elements may be connected together in a system for heating a surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.