Mining machine conveyor with deflectible boom
US4008797A · kind A · utility
4Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1975 |
| Grant date | Feb 22, 1977 |
| Priority date | — |
| Expiry date | Aug 14, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/20
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A mobile mining machine having an elevatable conveyor boom with a vertically deflectible end section. The end section of the boom is connected to the main section of the boom by a pivoted connection to provide relative vertical tilting movement. Stacks of leaf springs fastened flatwise to upper and lower surfaces of the boom side rails at the pivoted connection normally hold the end section in a working position aligned with the main section but enable vertical deflection of the end section when an abnormal and possibly destructive force is applied to the end of the boom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.