Bizarre Patents
Mouse device with a built-in printer
A mouse device for use as an input device of a computer is provided that includes a housing in which recording paper is loadable, and a printer unit provided within the housing for printing on the recording paper print information received from the computer.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7975784 | Drill bit assembly for fluid-operated percussion drill tools A drill bit assembly for fluid-operated percussion drill tools. The assembly comprises a percussion bit (1) having a head portion (3) formed with an axially extending stub shank (32). A drive bush (2) is releasably connectable to the bit ... | 07/12/2011 |
| 7428938 | Percussion bit drill drive collar with retention mechanism and method of assembling A drive collar is disclosed for use in a percussion drilling apparatus of the type for boring into the earth. Embodiments of the drive collar include a generally tubular, one-piece body further having an inner surface, an outer surface, a first end and a second end.... | 09/30/2008 |
| 7419018 | Cam assembly in a downhole component In one aspect of the invention, a downhole drill string component has a shaft being axially fixed at a first location to an inner surface of an opening in a tubular body. A mechanism is axially fixed to the inner surface of the opening at a second location and is in... | 09/02/2008 |
| 7419017 | Multi-sectional percussive drill bit assembly A multi-sectional percussive drill bit assembly for drilling holes in earth formation primarily used in conjunction with a pneumatic percussive device. The drill bit assembly is comprised of an easily removable bit that is rotationally driven by a lug and pocket str... | 09/02/2008 |
| 7392863 | Rock drill bit The present invention relates to a rock drill bit for percussive drilling. The drill bit comprises a bit body; a head portion defining a longitudinal center axis. The head portion comprises a front face having an outer surface portion, and an inner surface portion d... | 07/01/2008 |
| 7377338 | Downhole percussion tool A pressure fluid actuated downhole percussion tool includes a reciprocating piston hammer with differential transverse pressure surfaces cooperable with a cylinder housing, a guide sleeve and a bit carried exhaust tube to form opposed pressure fluid chambers to whic... | 05/27/2008 |
| 7325633 | Rock drill bit and a thread joint therefor A drill bit intended for percussive rock drilling is formed to reduce the occurrence of cavitation during percussive drilling. The drill bit includes an integral skirt and at least one channel for transport of flush medium, such as water. The drill bit has a front f... | 02/05/2008 |
| 7290622 | Impact device with a rotable control valve An impact device includes a frame to which a tool is connectible, and a stress element that is supported on the frame and disposed between the frame and the tool. A hydraulic control system leads pressurized hydraulic fluid into and out of a hydraulic fluid space su... | 11/06/2007 |
| 7281594 | Rock drill bit The present invention relates to a rock drill bit for percussive drilling. The drill bit comprises a bit body, a head portion defining a longitudinal center axis. The head portion includes an axially forward rock-crushing surface and a skirt that extends axially rea... | 10/16/2007 |
| 7267185 | Bit retainer system A bit retainer system comprising a casing, a driver sub adapted to be disposed around a shank of a bit, and a bit retainer. The driver sub comprises a threaded connector, a threaded pin end configured to engage with the hammer case, and a stop. The bit retainer comp... | 09/11/2007 |
| 7258180 | Rotary hammerdrill bit A rotary hammerdrill bit for use with a percussion drilling device or a hammer drilling device, with a shank and a drill head attached to or configured on the shank, wherein a front side pointing in the advance direction of the drill head has a main cutting plate fo... | 08/21/2007 |
| 7255181 | Method and device for the drilling of holes in ground or rocky material In a method and device for drilling, in particular percussion drilling or rotary percussion drilling, holes in soil or rock material, wherein a borehole is formed by a percussive and/or rotational movement carried out by a drill bit (1) mounted on a drill rod... | 08/14/2007 |
| 7252154 | Percussion device with a transmission element compressing an elastic energy storing material A percussion device for a rock drilling machine or the like, which comprises means for providing an impact, i.e. a stress pulse, to a tool connected to the percussion device. The means for proving the stress pulse include a stress element (4) of liquid, which... | 08/07/2007 |
| 7252158 | Pilot valve for a pneumatic tool A pneumatic tool (20) for impacting a workpiece (22) is provided. The tool (20) comprises a casing (42) defining a chamber (48). A piston (54) is slidable within the chamber (48) along an operational axis (A). An exha... | 08/07/2007 |
| 7185721 | Male portion, drill bit and threaded joint for percussive rock drilling A male portion for percussive rock drilling includes sections of reduced cross-sectional area. At least one thread for percussive rock drilling is provided at an end of the male portion. The end of the male portion comprises an abutment surface for the transfer of i... | 03/06/2007 |
| 7159676 | Fluid distributor device for down-hole-drills A fluid distributor device is for a percussive drill assembly including a generally tubular casing (2) having a longitudinal centerline and a piston (6) disposed within the casing so as to define a reservoir chamber (27) in the casing. The distr... | 01/09/2007 |
| 7152699 | Connection rod and method for production thereof A connection rod (1) for rock drilling includes a first rod part (2) whidh has an external thread (4) provided at one end thereof, wherein the end of the rod opposite to the one end includes an end portion (6) which carries an internal th... | 12/26/2006 |
| 7140814 | Spade-type drill bit having helical configuration A spade bit including a longitudinally extending shaft having a cutting member located at a distal end thereof. The cutting member comprises a pair of helically shaped, opposed blades joined along the longitudinal axis of the shaft and an axially extending pilot spu... | 11/28/2006 |
| 7093677 | Percussion drill head The invention relates to a method for horizontal drilling with a percussion implement and a percussion head or percussion head element mounted in a movable manner relative to the percussion implement, the percussion impulse being transmitted in at least three steps.... | 08/22/2006 |
| 7059432 | Cup-shaped rock drill head A cup-shaped drill head with an inner conical surface (2) for force-locking connection with an exterior conical surface (3) of a driving drill shaft (4), which at the leading end changes over into a cup base (5) with a center point (P), w... | 06/13/2006 |
| 7055633 | Concrete drill A concrete drill for a rotary and percussively driven hand tool machine with a cutting part (1) and a striking part (2) that is axially and limited displaceable relative to the cutting part (1). Each of the cutting part (1) and the striki... | 06/06/2006 |
| 7040416 | T-post hole-forming device and use for installing a T-post The invention provides a T-post hole-forming device, comprising (a) a shaft; (b) a head for receiving a driving force at the top of said shaft; (c) a flat plate affixed to one side of said shaft, the shaft terminating in a pointed end for piercing the ground. Also p... | 05/09/2006 |
| 7001120 | Drilling tool The invention relates to a drilling tool (36), in particular for working concrete, rock, masonry and suchlike materials, having a single- or multi-edge tool head with at least one cutting body (1) which comprises a central region (12) which is d... | 02/21/2006 |
| 6945340 | Roof bit and insert assembly A center vacuum rotary drill bit including a rotary drill bit body and an insert. The bottom surface of the slot has a projecting key that cooperates with a depression keyway of the insert. Generally vertical sidewall surfaces of a depression keyway and vertical sur... | 09/20/2005 |
| 6929079 | Drill bit cutter element having multiple cusps Cutter elements for use in rolling cones rock bits are disclosed having a crown that includes multiple, spaced-apart cusps for enhancing formation removal by creating overlapping Hertzian contact zones. The cusps may be partially dome-shaped, berm shaped or otherwis... | 08/16/2005 |
| 6926104 | Drill crown A drill crown (1) used for drilling purposes, especially for rotary percussion drilling of a mouth of a blast furnace. The drill crown (1) consists of a drilling head (4) provided with a plurality of hard material or hard metal inserts (6... | 08/09/2005 |
| 6918455 | Drill bit with large inserts A percussion drill bit is provided that has at least two different pluralities of inserts extending from the bit head to better match the conditions seen on the bit head during drilling. The preferred embodiment has a plurality of large inserts with a polycrystallin... | 07/19/2005 |
| 6905278 | Connection point A connection point (1) between two tool parts is proposed which are joined by means of a threaded spindle (7) oriented in longitudinal direction of the tool parts. The threaded spindle has two oppositely threaded sections (13, 15) which interact... | 06/14/2005 |
| 6854538 | Rock drill A rock drill includes a shank. A percussion piston is arranged to hit the back end of the shank. Further, a pulling element is arranged around the shank, to which a pulling force can be directed in such a manner that the shank can, by the pulling force, be moved tow... | 02/15/2005 |
| 6845827 | Rock drill head A drill head for rock drilling comprising cutting edges (1) made of hard material, which is detachably connected axially, over a bearing surface (3), with a drilling shaft (4) with at least one radially projecting driver blade (5a | 01/25/2005 |
| 6827162 | Self-retaining downhole-hammer drill bit The present invention relates to a downhole-hammer drill-bit assembly for removable attachment to a substantially tubular casing of a downhole hammer. The drill-bit assembly has a substantially tubular chuck, a drill-bit, and a substantially tubular retainer. The ch... | 12/07/2004 |
| 6810974 | Quick release drill bit for down-hole drills A retainer device (10) is provided for retaining a drill bit (12) within a percussive drill assembly casing (2). The retainer device (10) includes a generally annular body (16) having a central axis and an inner circumferential sho... | 11/02/2004 |
| 6789632 | Rock drilling apparatus A rock drilling apparatus includes a drill string terminating in a drill chuck (32) and a drill bit (16) detachably fitted into the drill chuck, the drill bit having a shank (18) received in the drill chuck, the drill chuck (32) and the d... | 09/14/2004 |
| 6698537 | Bit retention system A bit retainer for a percussion bit assembly has a bore and upper and lower lips extending into the bore. Multiple slots extend from the lower end of the retainer member to a terminal end disposed intermediate the upper and lower ends, forming multiple ca... | 03/02/2004 |
| 6658968 | Percussive rock drill bit and buttons therefor and method for manufacturing drill bit A percussive rock drill bit includes a head portion with a forward surface surrounded by a peripheral surface. The peripheral surface supports a wreath of peripheral buttons. Front buttons are mounted to the forward surface inside the wreath of peripheral... | 12/09/2003 |
| 6571890 | Twist drill A twist drill (1) has a plurality of of protuberances (9) arranged in the grooves (6) of the helix (4) which project radially outward partially into the groove cross section to prevent clumps.... | 06/03/2003 |
| 6557653 | Working tool for a percussion power tool A working tool for use with a percussion power tool and including a cushioning elongate stem (3), and a head (4) connected with the stem (3) for joint rotation therewith and for a limited axial displacement relative thereto, with the tool head (4) being a... | 05/06/2003 |
| 6543558 | Drilling and/or chiseling tool A drilling and/or chiseling tool (1) comprises a shaft (2) and a cylindrical insertion end (4) connected with the shaft (2) with at least one elongated recess (5 to 8), open toward the outer surface of and toward the free end of the insertion end (9) and ... | 04/08/2003 |
| 6508318 | Percussive rock drill bit and buttons therefor and method for manufacturing drill bit A percussive rock drill bit includes a head portion with a forward surface surrounded by a peripheral surface. The peripheral surface supports a wreath of peripheral buttons. Front buttons are mounted to the forward surface inside the wreath of peripheral... | 01/21/2003 |
| 6431292 | Device for drilling and draining holes in soil or rock The invention relates to a device (1) for the drilling, notably by percussion or rotary-percussion drilling, and draining of holes in soil or rock. A drill bit (2, 3) mounted on a drill rod (4) creates a bore hole and a jacket tube (6) is coupled to the d... | 08/13/2002 |
