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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7290624 | Method and device for drilling holes in soil or rock material The invention relates to a method and device for the drilling, in particular the percussive drilling or rotary percussive drilling of holes (9) in the ground or in rock, a bore hole (9) being formed by a drill bit (1) that is mounted on a drill ... | 11/06/2007 |
| 7240744 | Rotary and mud-powered percussive drill bit assembly and method A method and apparatus for boring a hole in the earth including a drill bit assembly including a fluid-powered impact engine contained within a drillpipe sub between an ordinary drillpipe and a modified conventional rotary drill bit. The impact engine is powered by ... | 07/10/2007 |
| 7237625 | Device for simulataneously casing a hole while drilling A driving device for installing a pipe or casing, without the use of hydraulic or pneumatic means, by capturing the rotational motion of the drill string. The driving device is placed at the top end of the pipe being (42) installed and the drill string (2 | 07/03/2007 |
| 7093679 | Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table A drilling machine drills foundation holes known as drilled shafts or bored piles with a drilling tool attached to an end of a kelly. The kelly is rotated with a rotary drive. The rotary drive has a first motor, a final drive gear coupled to the kelly so as to rotat... | 08/22/2006 |
| 7013996 | Impact device An impact device for a rock drill. The rock drill includes a tool and a mechanism for delivering a stress pulse to the tool. That mechanism includes an impact element supported to a frame of the drill, and a mechanism for subjecting the impact element to stress and ... | 03/21/2006 |
| 6976298 | Methods and apparatus for connecting tubulars using a top drive An apparatus for facilitating the connection of tubulars using a top drive, the apparatus comprising a stator attachable to said top drive, and a supporting member for supporting a tool, wherein means are provided to allow substantially horizontal movement of said s... | 12/20/2005 |
| 6814166 | Direct push drilling swivel and method for its use A power swivel provides the rotational force to drill consolidated subsurface strata while an unrestricted airflow through the swivel and down a drill string remove cuttings from the borehole. The power swivel is configured to mount on direct push/driven-vibrating e... | 11/09/2004 |
| 6745836 | Down hole motor assembly and associated method for providing radial energy The down hole motor is a self-contained radial drive unit that is driven by a linear input, which can be supplied from various sources. As linear motion is applied to the input of the tool, drive pins on a drive shaft follow a helical path, converting the linear mot... | 06/08/2004 |
| 6702045 | Drilling apparatus There is provided drilling apparatus (10) comprising a hammer casing (11), a free piston motor piston guide and porting sleeve (12), a drive sub (13), a drill bit (15) splined by shank (16) to the drive sub (13). Below the splined portion (17) the drive s... | 03/09/2004 |
| 6675916 | Boring machine and auger bit A method and apparatus for boring holes in the ground. The apparatus includes an auger translating along a guide. Because the auger translates along the guide, the auger bores a straight hole in the ground. The present invention also contemplates a method... | 01/13/2004 |
| 6371222 | Hammer device A hammer device has a machine housing (1) with a hammer piston (2) movable to-and-fro. The to-and-fro movement of the hammer piston is controlled by a valve body (6) movable to-and-fro in the machine housing. The valve body, via a channel (7), alternative... | 04/16/2002 |
| 5860482 | Multiple force hole forming device A device and method for forming a downwardly extending hole in the surface of the earth for seismic exploration or for forming a larger diameter hole such as made during exploratory drilling. The hole forming device includes an elongated rigid planting me... | 01/19/1999 |
| 5353940 | Alignment system for crane works and method of alignment A system for aligning a crane upper works with a crane lower works for redecking the upper works with the lower works comprises at least one roller operatively connected to at least one of the upper works and the lower works, and at least one surface oper... | 10/11/1994 |
| 5305841 | Hammer device A down-the-hole hammer includes a drill bit and a piston reciprocating therebehind to periodically strike the drill bit. The drill bit includes front and rear portions of difference impedance, and the piston includes front and rear portions of difference ... | 04/26/1994 |
| 5092411 | Drilling apparatus A drilling apparatus, especially for drilling blast holes, includes a carriage, a drilling rod, a pressure-operated drive system movable along the carriage for transmitting a back and forth rotation to the drilling rod, a flushing head arranged on the car... | 03/03/1992 |
| 5032039 | Underground excavator An underground excavator includes a chamber defined in the forward section of an excavator body for receiving excavated material such as soil, sand, gravel, clay and their mixtures. A rotary cutter is mounted to the forward end of a rotary shaft for penet... | 07/16/1991 |
| 4993504 | Device for efficient energy transfer and damping of impact drilling machines Device in impact machines. The device comprises a first chamber (5) which is connected to an accumlator (6) and the pressure of which is used to hold together a set of rods (2) forming part of the drill tool. Furthermore there is a second chamber (7) to d... | 02/19/1991 |
| 4742876 | Submarine drilling device A device for submarine foundation drilling includes: a drilling unit including a head and body interconnected by at least one cylinder, the body being equipped with at least one cutter, the drilling unit being equipped with at least one excavating pump, a... | 05/10/1988 |
| 4550788 | Roof bolt hole groover A hole groover comprising a pair of grooving bits radially protruding from the surface of a drill rod and connected to swivel upwardly and downwardly near the end of the drill rod where the drill bit is connected. A connecting rod is connected to the insi... | 11/05/1985 |
