Warning device and method to prevent clutch burning
US7228899B2 · kind B2 · utility
12Cited by
18References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2004 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | May 22, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0021
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This invention is generally directed towards a system designed to assist the rig operator by alerting him/her that the air pressure is too low to be using the drum clutch, to provide a log for studies on rig operation technique, and to provide a training tool for rig operators. If the pressure on the clutch bladder is above a predetermined range, the clutch is allowed to engage. If the signal is below the range, the clutch is assumed to have not been engaged. If the signal is within the range, the clutch is not allowed to engage and the rig operator is notified of the problem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.