Famous Patents
Pong, the Atari creation that launched the computer game craze, came with these instructions: "Avoid missing ball for high score."
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 |
| 7219585 | Cutting workstation A cutting workstation which includes a cutter mounted on an arm type configuration. The arm configuration is slidably moveable relative to a divided work piece support table, the cutter moveable there between. Further, the cutter is capable of elevating the arm eith... | 05/22/2007 |
| 7197805 | Embedment removal method Draft tube embedments of a hydroelectric turbine are removed for replacement and/or upgrading. Several shafts for saw wire access, forming a horizontal polygonal shape are drilled outside the draft ring and a circular slot cut below the bottom ring to meet the shaft... | 04/03/2007 |
| 7185954 | Method and device for removing part of concrete structure This invention refers to a method for removing a part of concrete construction that comprises a base concrete; a reinforced concrete formed on the base concrete; rebars embedded in the base concrete and upwardly extending through the reinforced concrete; the method ... | 03/06/2007 |
| 7032978 | Crushing method using large boreholes in underwater rock The present invention relates to a crushing method using large boreholes in an underwater rock in which plural large boreholes are drilled on the rock in a predetermined space, the drilled boreholes form plural free surfaces, and the large drop hammer gives a blow t... | 04/25/2006 |
| 7032657 | Effervescence keeper An effervescence keeper is shown as an elongated body for placement into an open container having a quantity of carbonated liquid. The effervescence keeper includes a stopper for supporting the effervescence keeper on the neck of the container and adjusting holes or... | 04/25/2006 |
| 7014726 | Rock laminate A rock laminate has been provided that includes a layer of rock and a flexible layer. The layer of rock has a plurality of pores that can receive fluid. The flexible layer is positioned above the layer of rock and has a portion which extends into the pores of the la... | 03/21/2006 |
| 6520591 | R.B. Jun's method of openwork mining utilizing pit wall consolidation The invention relates to the mining industry and can be used for working out mineral deposits, no matter what their thickness and dip angle are, and allows to reduce the volumes of overburden operations. The invention provides the working out the main res... | 02/18/2003 |
| 6102483 | Process for preparing the exposed surface of a rock formation to permit the extraction of parallelepiped shaped blocks of rock ready for final processing, and process and extractor for extracting such blocks The present invention refers to the extraction from rock formations of blocks of rock that are already of a paralellepiped shape and thus do not require final time consuming finishing operations. The process of the invention involves cutting a long slot i... | 08/15/2000 |
| 5765924 | High pressure water jet channeling horizontally into a solid mountain of granite A method and apparatus for horizontal channeling into a mountain of granite automatically have been developed in which a water jet nozzle contained in a rigid lance assembly advances in and out of the mountain to the depth of the lance in a horizontal pla... | 06/16/1998 |
| 5653508 | Chimney demolition device and method An apparatus and method is provided for demolishing concrete chimneys. The apparatus for demolishing concrete chimneys from the top downward comprises: (a) a first support, (b) a second support, (c) means for forcibly vertically moving the supports relati... | 08/05/1997 |
| 5570934 | Traction boring device using multiple trepans for producing large cuts in concrete works and the like and method of producing cuts A multiple trepan boring device for producing substantially large cuts in large works, such as concrete dams, comprises a drilling shaft adapted to be translationally displaced along its longitudinal axis and carrying a series of spaced apart cylindrical ... | 11/05/1996 |
| 5472262 | Double slot wire sawing apparatus and method The invention relates to a double slot wire sawing machine and to a method of mining using the machine. The machine has a mobile chassis with a driving arrangement for simultaneously and independently driving two separate wire saws which each cut their ow... | 12/05/1995 |
| 5332293 | Apparatus for cutting erosive materials using high pressure water device Apparatus for cutting erosive materials such as stone and the like includes a high-velocity, high-pressure water lance which can be raised and lowered as necessary. The lower end of the water lance carries a cutting head in the form of a nozzle assembly a... | 07/26/1994 |
| 5087100 | Method of fracturing rock or similar material and apparatus therefore A method of fracturing a hard compact material such as rock or concrete, having a hole pre-drilled in the material area to be fractured which includes inserting a outer slug of solid material into the hole to a bottom thereof, and impacting the outer slug... | 02/11/1992 |
| 4962967 | Stone slotting machine A stone slotting machine includes a main frame movable on tracks disposed on the ground at a stone quarry. The slotting machine further includes cutting blade having an arbor frame, a number of cutting cylinders attached and aligned together and being rot... | 10/16/1990 |
| 4950034 | Shaft excavation method A method for sinking a shaft having a wide diameter e.g. 4 meters. A concrete diaphragm wall is formed with five radially inwardly extending sections (12), in each of which a guide hole (13) is formed. Five outer boreholes are drilled to depth using the g... | 08/21/1990 |
| 4838614 | Method of excavation and apparatus therefor A tunnel is constructed by progressively cutting away a predetermined depth of rock from a face using rotary diamond saws. Slots are cut into the face (12) at an acute angle to the face such that first slots intersect second slots to detach blocks from th... | 06/13/1989 |
| 4838615 | Apparatus for excavating a recess Apparatus for excavating a tunnel of generally quadrilateral cross-section, the apparatus comprising a cutting head having the head being mounted for rotation about a first axis and a second axis to change the angle of inclination of the cutter. The cutte... | 06/13/1989 |
| 4832411 | Method and apparatus for cutting reinforced concrete The invention relates to a method of cutting an interior surface in reinforced concrete. Holes are drilled to define the shape of the concrete (usually a rectangular block) to be removed, these can be drilled to any suitable depth, which was not possible ... | 05/23/1989 |
| 4821703 | Opening method for reinforced concrete wall The opening method to drill openings with required largeness on thick reinforced concrete walls such as a reinforced concrete dam body is presented. This method comprises (1) the process of drilling cable penetrations in the depth direction on each corner... | 04/18/1989 |
| 4673218 | Tunnel excavation method A method of excavating a tunnel in bedrock, including the steps of boring an outer peripheral slot in the bedrock, boring a plurality of horizontal slots in a bedrock section surrounded by the outer peripheral slot such that the bedrock section is divided... | 06/16/1987 |
| 4671367 | Pole hole digger with percussive core drilling A drilling attachment for a utility truck designed for digging pole holes for ordinary utility and telephone poles is disclosed herein. The attachment is intended to replace the auger portion of a conventional auger digger when it is necessary to drill th... | 06/09/1987 |
| 4542940 | Method and apparatus for cutting a trench through rock-like material Apparatus and method for digging deep trenches having parallel generally vertical walls in solid rock such as limestone. The apparatus includes a transport means for providing support and for moving along a traverse on the earth's surface while cutting a ... | 09/24/1985 |
| 4520880 | Automatic stone cutter This invention relates to an automatic stone cutter having a construction in which a base can slide on right and left rails, a cylinder main body having a drill is mounted to the base so as to be capable of elevating in the longitudinal direction and the ... | 06/04/1985 |
| 4433871 | Machine for cutting curbstones, sidewalls and the like Machine including a powered truck-like vehicle having a support base at the rear end and an apparatus for cutting a drive-in passage across a concrete curbstone, a sidewalk or the like. The apparatus is mounted on the base and essentially comprises two sp... | 02/28/1984 |
| 4311343 | Apparatus for breaking rock or concrete A method of breaking rock, concrete or other hard compact material adjacent to a hole drilled thereinto and an apparatus for performing the method wherein the apparatus contains a notch-forming means to form a circumferential notch in the drillhole wall, ... | 01/19/1982 |
| 4298232 | Mining machine A mining machine in which a cutting drum undercuts a vein of coal and side relief cutters make vertical kerfs in the vein upwardly from the undercut. A chisel plate is forced into the coal vein and breaks loose the material above the undercut and between ... | 11/03/1981 |
| 4230372 | Dual rock cutter wheel trencher Apparatus and method for digging deep vertical walled trenches in solid rock such as limestone. The apparatus comprises a base supported by four crawler type traction means. A turntable is translatably carried by the base and in turn supports a prime move... | 10/28/1980 |
| 4190293 | Rock splitting attachment for a breaking hammer A rock splitting attachment for a breaking hammer comprising a primary shaft and an elongated primary wedge assembly that is telescopically attached to the primary shaft. The primary shaft has a plurality of principal wedge surfaces on its outer surface a... | 02/26/1980 |
| 4176883 | Oscillating liquid jet system and method for cutting granite and the like A method and apparatus for cutting rock materials has been devised in which a series of jets are produced by a nozzle assembly, the nozzle assembly being constructed and arranged to advance along the surface of the rock material and to form a channel or l... | 12/04/1979 |
| 4145086 | Method and machine for digging ditch Disclosed is a method and machine for digging a ditch for use in, for example, duct disposition therein. In the floors and walls of a concrete structure, for example, three preparatory ditches or channels are dug by means of rotary blades. By inserting a ... | 03/20/1979 |
| 4134620 | Channelling machine for cutting a preliminary groove around the working face of a tunnel A channelling machine for cutting a preliminary groove around the working face of a tunnel being excavated. A guide and drive track assembly comprising at least two guide rails and a drive rail displaceable into the immediate proximity of the working face... | 01/16/1979 |
| 4114950 | Method and apparatus for breaking a hard compact material such as rock or concrete A method for breaking a hard compact material such as rock or concrete. The method includes drilling a hole into the material, gripping a portion of the wall of the hole by applying a radially outwardly directed force thereto, and applying an axially outw... | 09/19/1978 |
| 4073353 | Sonic large bore earth auger Means are provided to rotatably drive a cutter blade device about a central point so as to bore a circular hole in the ground. Elastic bar means is vibrationally excited at a sonic frequency by means of an orbital mechanical oscillator, the frequency of t... | 02/14/1978 |
| 4072353 | Thrust-impact rock-splitter A rock splitting tool having elongate laterally expanding metal pressure bars or feathers and an axial sliding wedge or spreader for radially separating the feathers, the wedge being driven by the combined and superimposed forces of a hydraulic thrust ser... | 02/07/1978 |
| 4013319 | Tunneling machine with massive guide for impact tools A tunneling machine is described which uses an array of impact tools for cutting a deep kerf that defines the wall of the tunnel. The impact tool provides impact blows through drill steels to which drill bits are attached. A substantial portion of the dri... | 03/22/1977 |
