Haulage chain for a mineral winning installation
US5244256A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1992 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Jun 29, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16G13/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A haulage chain for a mineral winning installation, comprises a plurality of first links and a plurality of second links alternating with one another along the longitudinal extent of the chain. Each first link defines a single closed loop and each second link defines three closed loops, two of which are provided by opposite end portions of the second link and lie in a common plane and the other of which is provided by an intermediate portion between the two end portions and lies in a plane normal or substantially normal to the common plane of the two end loops. The first links each pass through opposite end portions of a pair of adjacent second links and maintain a substantially even pitch between the said end portions of all the second links.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.