Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7461712 | Track-mounted drilling machine with active suspension system A drilling machine includes a frame, a tower that is supported by the frame, two tracks for movement over the ground, at least three yokes that interconnect the frame and the two tracks, at least three hydraulic cylinders, an inclinometer that senses the inclination... | 12/09/2008 |
| 7438143 | Track-mounted drilling machine with active suspension system A drilling machine includes a frame, a tower that is supported by the frame, two tracks for movement over the ground, at least four yokes that interconnect the frame and the two tracks, a plurality of hydraulic cylinders, a plurality of sensors, and a controller. Th... | 10/21/2008 |
| 7413036 | Sub drilling sub A telescoping sub (50) for mining operations and the like. The telescoping sub (50) includes a rotor (94) portion coupleadle to the rotary head of a drilling rig, and a stator (74) portion that is coupleable to a drill rod. The rotor (... | 08/19/2008 |
| 7347285 | Drilling machine having a movable rod handling device and a method for moving the rod handling device A drilling machine including a frame, a tower, a rotary head, and a rod handling device. The frame is supported for movement over the ground and the tower is mounted on the frame. The rotary head is movable along the tower and is engageable with the drill string for... | 03/25/2008 |
| 7325634 | Track-mounted drilling machine with active suspension system A drilling machine includes a frame, two tracks, and a plurality of yokes interconnecting the frame and the tracks. Each yoke is pivotable with respect to the frame by the extension and retraction of a hydraulic cylinder. Each of a plurality of sensors senses a para... | 02/05/2008 |
