Feed chain automatic tensioner
US8267202B2 · kind B2 · utility
1Cited by
26References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 2010 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Mar 19, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49963
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An automatic tensioning system for a chain drive system of a rock drill assembly is disclosed. A hydraulic cylinder is coupled to one end of the feed channel of a rock drill assembly. When pressurized hydraulic fluid is provided to the hydraulic cylinder, a plunger within the hydraulic cylinder pulls on a tensioner sprocket, which in turn provides tension to the chain of the chain drive system. This allows for a constant tension to be applied to the chain throughout a long duration of operation as opposed to a manually adjusted chain drive system in which the chain tension varies during operation in between manual adjustments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.