Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7371034 | Drilling attachment A drilling attachment for use in wet and dry drilling operations includes a housing having first and second fluid conduits, and a drive shaft mounted within the housing and having fluid transmitting first and second end portions in fluid communication with a respect... | 05/13/2008 |
| 7198120 | Down-the-hole drill assembly The invention provides a down-the-hole drill assembly having exhaust passages from upper and lower chambers past the inner end of a bit and through the body of the bit to exit through the bit face. The construction of the assembly and bit obviates a foot valve tube ... | 04/03/2007 |
| 7159674 | Method and device for directional down-hole drilling The invention concerns a method and a device for directional drilling of a hole, in particular when drilling curved holes for mining, drift mining or similar, whereby a drill support is used in the form of a flexible continuous drill tube with a proximal end and a d... | 01/09/2007 |
| 7156189 | Self mountable and extractable ultrasonic/sonic anchor Self drilling anchors and related methods and apparatus. In one embodiment an apparatus comprises a drill bit, a hammer mechanism for hammering the drill bit in a first direction and in a second direction, and a selection mechanism for controlling whether, at a give... | 01/02/2007 |
| 7139219 | Hydraulic impulse generator and frequency sweep mechanism for borehole applications This invention discloses a valve that generates a hydraulic negative pressure pulse and a frequency modulator for the creation of a powerful, broadband swept impulse seismic signal at the drill bit during drilling operations. The signal can be received at monitoring... | 11/21/2006 |
| 7134512 | Method of downhole drilling and apparatus therefor A downhole drilling apparatus suspended by tubing includes a drill bit driven by an electric motor powered by a cable means. The motor is mounted upon a hollow shaft which allows fluid to pass through, so that a fluid circuit along the tube and back along the annulu... | 11/14/2006 |
| 7118609 | Motorized tool with suction and dust collection capacity The present invention refers to a motorized tool with suction and dust collection capacity. The tool comprises: means for extracting dust suitable for producing a flow of air; means for collecting dust having a first duct for the entrance of the air, that can be con... | 10/10/2006 |
| 7066279 | Pneumatic ground piercing tool A ground piecing tool includes a housing and an air distributing mechanism that reciprocates a striker to impact a chisel shaft in response to a supply of compressed fluid including a fluid inlet tube mounted in the bore of the striker having a radial port, a rear e... | 06/27/2006 |
| 7051995 | Device for generating a reciprocating movement, valve arrangement therefore and pheumatic tool A pressure-fluid driven device for generating a reciprocating movement includes a first (5) and a second relatively movable part (3), wherein a working chamber (7) is intended to be alternatively pressurised and depressurised so as to drive the ... | 05/30/2006 |
| 7040421 | Liquid driven downhole drilling machine In a liquid downhole drilling machine, the guiding bushing (31) for the drill bit is rotatably journaled in the housing (11, 12) and, via a one-way coupling (29), coupled to a turning sleeve (22) that has axial ridges (24) that bou... | 05/09/2006 |
| 7040417 | Drilling systems The present invention discloses, in certain aspects, systems and methods for producing cyclical impacts and, in certain aspects for moving a drilling apparatus for drilling a borehole in a formation, the system in certain embodiments including a housing with a longi... | 05/09/2006 |
| 6830113 | Dust suppression guard A dust suppression guard includes a shroud defining an enclosed space. The guard also includes a clamp mounted adjacent a first end of the shroud, a reinforcing member attached to a central portion of the shroud, and a boot attached adjacent a second end of the shro... | 12/14/2004 |
| 6464023 | Hydraulic in-the-hole percussion rock drill A hydraulic percussion drill includes a piston hammer disposed in a cylinder for reciprocating movement in response to pressure fluid acting continuously on one transverse face of the piston hammer and in response to valving of pressure fluid alternately ... | 10/15/2002 |
| 6315063 | Reciprocating rotary drilling motor An improved downhole fluid pressure powered reciprocating rotary drilling motor includes an automatic fluid valve means and a fluid controller that in combination provide a fluid driven periodic forcing function to excite a drill bit both axially and rota... | 11/13/2001 |
| 6293357 | Hydraulic in-the-hole percussion rock drill A hydraulic reciprocating piston hammer percussion drill includes an elongated piston hammer having opposed reduced diameter shank portions and disposed in a cylinder for reciprocating movement in response to pressure fluid acting continuously on one tran... | 09/25/2001 |
| 6155361 | Hydraulic in-the-hole percussion rock drill A hydraulic reciprocating piston hammer percussion drill includes an elongated piston hammer having opposed reduced diameter shank portions and disposed in a cylinder for reciprocating movement in response to pressure fluid acting continuously on one tran... | 12/05/2000 |
| 6050346 | High torque, low speed mud motor for use in drilling oil and gas wells A improved "mud motor" for use in oil and gas well drilling includes a reciprocating valve and piston arrangement that generates power using drilling fluid media (e.g., drilling mud) pumped through an inlet port to form a differential across a piston seat... | 04/18/2000 |
| 6047778 | Percussion drill assembly A compressor piston divides a first compartment into two compression chambers, while a hammer piston divides a second compartment into two drive chambers, each of the compression chambers being connected to a respective one of the drive chambers to form a... | 04/11/2000 |
| 5992537 | Back end connection in a downhole drill A pneumatic downhole impact drill has a backhead for mounting an inlet check valve and a mounting hub for mounting a fluid delivery tube. A split ring has an interior circumferential groove forming upper and lower shoulders and comprises two substantially... | 11/30/1999 |
| 5984021 | Porting system for back chamber of pneumatic hammer A pneumatic downhole impact drill has a porting system for automatically supplying pneumatic pressure fluid from a fluid delivery tube received within an axial bore in the impact piston to the opposite ends of the piston operating cylinder as the piston r... | 11/16/1999 |
| 5957220 | Percussion drill assembly A compressor piston divides a first compartment into two compression chambers, while a hammer piston divides a second compartment into two drive chambers, each of the compression chambers being connected to a respective one of the drive chambers to form a... | 09/28/1999 |
| 5808380 | Self lubricating VANE air motor A vacuum impregnated porous cylinder is utilized in a vane type air motor to provide a continuous source of lubrication for the vane tips rotating within the cylinder thereby eliminating the need for lubricant dispersion in the air supply.... | 09/15/1998 |
| 5680904 | In-the-hole percussion rock drill A hydraulic reciprocating percussion tool, particularly adapted for drilling applications, comprises an elongated cylinder, opposed fronthead and backhead members and a central bore in the cylinder for supporting a reciprocating piston hammer. The piston ... | 10/28/1997 |
| 5586606 | System for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker A system for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker includes a unitary valve assembly positioned within a bore of a rear portion of a tool housing, the valve assembly having an oil reservoir for lubricating ... | 12/24/1996 |
| 5582257 | System for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker A system for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker includes a unitary valve assembly positioned within a bore of a rear portion of a tool housing, the valve assembly having an oil reservoir for lubricating ... | 12/10/1996 |
| 5564510 | Pneumatic drill hammer According to the invention, a drill hammer (10) generally comprises an outer tube (55), a control casing jacket (60) inclusive of check valve (59) and a central tube (80) having radial passages (81, 83). A ram (75) is guided on central tube (80), onto the... | 10/15/1996 |
| 5562170 | Self-lubricating, fluid-actuated, percussive down-the-hole drill A fluid-actuated, percussive, down-the-hole drill having a piston slidingly supported in a casing and passageways for transmitting flow of percussive fluid to actuate the piston is provided with self-lubricating bearings and self-lubricating seals within ... | 10/08/1996 |
| 5542484 | Liquid reciprocating piston hammer drilling arrangement without cavitation A drilling arrangement is provided having a reciprocating piston hammer which hammers a drill bit for hydraulic down-the-hole piston hammer drilling. The drilling arrangement uses a liquid for driving the reciprocating piston hammer with respective impact... | 08/06/1996 |
| 5524714 | System for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker A system for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker includes a unitary valve assembly positioned within a bore of a rear portion of a tool housing, the valve assembly having an oil reservoir for lubricating ... | 06/11/1996 |
| 5472130 | Powered fastener inserting machine A powered machine for inserting an attachment member having a filament with a head at one end through an opening in an article and including a needle which is projected from machine in order to penetrate that article and convey the filament head therethro... | 12/05/1995 |
| 5402854 | Fluid distributor for a debris flushing system in a percussive, fluid-activated apparatus A fluid distributor for a debris flushing system in a fluid-activated jackhammer includes a bore through a reciprocal piston, for fluid flow into an exhaust chamber, a fluid distributor removably mounted in the piston bore, the fluid distributor operating... | 04/04/1995 |
| 5396965 | Down-hole mud actuated hammer Improvements in down-hole mud actuated hammers are disclosed. According to its broadest aspect the invention is a down-hole mud actuated hammer for use in a drill string, which includes a housing with an upper end having means for connecting to the drill ... | 03/14/1995 |
| 5307881 | Flushing system for a percussive, fluid-activated apparatus A debris flushing system for a percussive, fluid-activated apparatus includes a first and second separate and independent flushing system in the apparatus, each flushing system having a separate combination of passageways in the apparatus for fluid commun... | 05/03/1994 |
| 5259463 | Throttle lever system for a percussive, fluid-activated apparatus A throttle lever system for operating a flushing system on a percussive, fluid-activated apparatus includes a fluid inlet port, passageways in the apparatus for exhaust fluid, a seal device for opening and closing the passageways, and a throttle lever sys... | 11/09/1993 |
| 5207280 | Device in hammer machines Device in hammer machines. The device comprises a machine housing (1) and a hammer piston (2) movable to-and-fro in the machine housing. A drilling tool connected to the machine housing comprises a drill bit (5), a set of tubes (4) for rotating the drill ... | 05/04/1993 |
| 5131476 | Down hole percussion drill apparatus A downhole percussion drill or hammer (100) is disclosed having an outer casing (2) in which a reciprocating piston (26) which periodically impacts a drilling bit (16) disposed at a bottom end of the casing. A top chuck (1), attached to the top end of the... | 07/21/1992 |
| 5117923 | Hydraulic jackhammer The hydraulic jackhammer is provided with a rotor turbine which is driven by a liquid stream in order to activate the tup for driving against a jumper rod. After passing by the turbine rotor, the liquid stream is mixed with air and passed through a nozzle... | 06/02/1992 |
| 5080179 | Down the hole hammer equipment The invention is concerned with pneumatic percussion drilling equipment with advantageous manufacturing simplicity and effective piston area to casing size consisting essentially of an elongate hollow casing housing a piston assembly and having a backhead... | 01/14/1992 |
| 5058686 | Sliding-weight operated hole boring tool A sliding-weight operated hole boring tool can be used to make holes of various length or depth in varied soil conditions. A uniquely-shaped tool bit helps to form a smooth, clean hole. In preferred embodiments, detachable elongated stems are used to vary... | 10/22/1991 |
| 4993501 | Hydraulic hammer in particular for use in dusty and/or corrosive environments A hydraulic hammer is provided, suitable for use as a crust-breaker of aluminum electrolysis pots, having a hydraulically actuated beating mass reciprocally movable in a cylindr to strike against a tool, an intake duct with a filter and a one way valve fo... | 02/19/1991 |
