Electrically heated flexible tube having temperature measuring probe
US4038519A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1974 |
| Grant date | Jul 26, 1977 |
| Priority date | — |
| Expiry date | Nov 15, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/779
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A flexible heating tube especially for medical use, e.g. for taking blood away from and returning it to the body, in which a flexible pipe of transparent plastics material is provided with at least one electrical helical resistance heating conductor and at least one helical filiform temperature measuring resistance probe. The two elements are wound on the same axis and are embedded in the wall of the pipe and are in surrounding relation to the bore in the pipe. The helical turns of the at least one electrical resistance conductor and of the at least one temperature measuring probe are of the same pitch and are coextensive along the length of the pipe. Electrical connection terminals at at least one end of said pipe are connected to said at least one heating conductor and said at least one temperature measuring probe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.