Switch tongues
US6464177B1 · kind B1 · utility
7Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2000 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Jul 17, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B2202/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
With a device for switching switch tongues the tongue tip of which lies on a roller plane of a slide chair, the switch tongue can be switched more easily when the front roller (7a) of a roller pair (6) is positioned lower than the rear roller (7b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.