Fire tube for a heating boiler
US4214627A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1978 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Nov 7, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S165/524
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fire tube for a heating boiler comprising two metal tube halves each having a base portion and two leg portions projecting at an angle from the base portion, the tube halves being disposed relative to one another such that the terminating ends of the leg portions abut one another and are joined by welding. A plurality of substantially U-shaped elements extend longitudinally within the fire tube, each of the U-shaped elements having a base section and projecting leg sections, the base sections being welded to the base portion of one of the tube halves, the leg sections being parallel to one another and extending substantially across the width of the fire tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.