Drill rig
US5794724A · kind A · utility
15Cited by
11References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Nov 6, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/554
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a preferred embodiment the core drilling rig of the present invention includes a base, a vertically extending mast, a movable carriage mounted on the mast, an electric powered motor for rotatably driving a core drill bit, and a control system for controlling the supply of electric power to the drive motor. The control system includes a motion sensitive device for detecting the unwanted movement of the base and suspending the supply of electric power to the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.