Pipe heater
US10165626B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2015 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | May 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/003
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed is a pipe heater comprising a tubular heat insulating layer having a pair of separating surfaces formed over the entire length thereof, an external cover bonded to the outer surface of the heat insulating layer to enclose the heat insulating layer, a heating layer provided inside the heat insulating layer and including a heating wire therein, and an internal cover provided inside the heating layer to enclose the heating layer, wherein the heat insulating layer includes a polyimide foam layer formed of polyimide foam, and a protection layer is interposed between the heat insulating layer and the heating wire to prevent bubbles distributed in the polyimide foam layer from dissipating due to heat transferred from the heating wire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.