Friction and rack and pinion locomotive
US4287831A · kind A · utility
2Cited by
12References
10Claims
0Family size
Inventor
Key dates
| Filing date | Sep 12, 1978 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Sep 12, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1967
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
This invention relates to a suspension railroad in mines, including a monorail having an elongated friction section and an elongated rack section located above the friction section, a car suspended on the monorail and driven for moving the car along the rail including a friction wheel in frictional engagement with the friction section, a gear wheel coaxial with the friction wheel, and a shiftable device for moving the gear wheel into and out of engagement with the rack section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.