E01B 31/175
Using grinding belts
Official title: {using grinding belts}
E01B31/175 (Using grinding belts) appears on 8 US grants and 0 published applications in this corpus.
Search patents in E01B- Granted patents
- 8
- Published applications
- 0
- Assignees
- 8
- Inventors
- 15
- Latest grant
- 7 Dec 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Device for the continuous and fine reprofiling in situ of the surface of the head of at least one rail of a railway track7 Dec 1999US 5,997,391 ASpeno International S. A.
- Rail grinding machine22 Oct 1996US 5,567,196 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H.
- Rail grinding apparatus19 Apr 1994US 5,303,514 ARailway Technical Research Institute
- Tangential grinding machine3 Sep 1991US 5,044,126 ARotrafer S.p.A.
- Method and apparatus for grinding the running and/or guide surfaces of rails or the like16 Jul 1991US 5,031,365 AElektro-Thermit GmbH
No published applications in this class yet.
Most cited
By later US patents
- Mobile rail grinding machine and method9US 4,249,346 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1981
- Rail grinding machine5US 4,896,460 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1990
- Rail grinding machine4US 5,567,196 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1996
- Rail grinding machine3US 4,768,312 AWilliams & White Machine Shop · 1988
- Method and apparatus for grinding the running and/or guide surfaces of rails or the like3US 5,031,365 AElektro-Thermit GmbH · 1991