Road surface heating apparatus for reproducing the deteriorated road surface
US4969772A · kind A · utility
26Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Aug 9, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A road surface heating apparatus for repairing a deteriorated asphalt paved road includes an air shut out device with skirt members surrounding the heating panel so as to prevent air from entering into the heating apparatus, thereby restraining smoke generation. The generated smoke is filtered and purified by an after-burner and a catalyst burner and then exhausted, thus air pollution problems at the work site are solved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.