Class / Patent application number | Description | Number of patent applications / Date published |
299055000 | Rotary cutter head with advance direction coincident or parallel to rotary axis | 15 |
20090058172 | MINING MACHINE WITH DRIVEN DISC CUTTERS - A mining machine includes a cutting mechanism with an arm, and a substantial weight of more than a thousand pounds attached to the arm. The mining machine also includes a first disc cutter adapted to engage the material to be mined and mounted on a first disc cutter assembly for eccentrically driving the first disc cutter, the first disc cutter assembly being mounted within the substantial weight. The mining machine also includes at least a second disc cutter spaced apart from the first disc cutter assembly and adapted to engage the material to be mined, and mounted on a second disc cutter assembly for eccentrically driving the second disc cutter, the second disc cutter assembly being mounted within the substantial weight. | 03-05-2009 |
20090079256 | ROTARY CUTTER FOR TUNNEL BORING MACHINE - A rotary cutter for a tunnel boring machine or similar machine has a cutter ring mounted to a hub. The hub is mounted on a shaft. A sleeve bearing system is positioned between the hub and the shaft for supporting the hub on the shaft and allowing relative rotation. A duo-cone seal assembly is positioned between the hub and the shaft to seal out contaminants from the sleeve bearing system. An oil gallery with lubricating oil for lubricating the sleeve bearing system is provided in the shaft. | 03-26-2009 |
20100052405 | Base for a Drilling Device - In a starter car for a drilling device for mining underground deposits, including a base frame ( | 03-04-2010 |
20130264860 | Cutting Head Tool for Tunnel Boring Machine - A ripper tool for a tunnel boring machine includes a tool body and a plurality of cutting element inserts. The tool body has a plurality of socket cavities. A tool body blank can be heat treated to increase the hardness of the tool body blank. The socket cavities can be machined in the tool body blank after the tool body blank is heat treated. The cutting element inserts are mounted to the tool body. The cutting element inserts are respectively press fit in the socket cavities. The ripper tool can be pivotably mounted to a cutter head of the TBM. | 10-10-2013 |
20130341998 | TUNNEL BORING MACHINE WITH CUTTERHEAD SUPPORT ASSEMBLY SUPPORTING A VARIABLE NUMBER OF DRIVE SYSTEMS - A tunnel boring machine ( | 12-26-2013 |
20140084667 | APPARATUS FOR THE MILLING CUTTING OF ROCK, MINERALS OR OTHER MATERIALS - An apparatus for the milling cutting of rock, minerals or other hard materials has a tool drum which is rotatably mounted on a drum carrier about a drum axis and on the peripheral shell surface of which are disposed, in distributed arrangement, a plurality of tool carriers, which carry cutting tools and can be rotatingly driven, where their shaft axes run transversely to the drum axis. A first group of tool carriers and a second group of tool carriers are provided, where the rotational direction of the first group is counter to the rotational direction of the second group, and the shaft axes of the tool carriers of the first group and of the second group are oriented at different setting angles relative to the radial direction of the tool drum. | 03-27-2014 |
20140217805 | DRILL BIT EXCHANGE DEVICE FOR SHIELD TUNNELING MACHINE - A drill bit exchange device for a shield tunneling machine includes: a housing with an aperture; a valve body housed in a chamber of the housing, the valve body being pivotable about a pivot axis (Ob) inclined at a predetermined angle with respect to an axis perpendicular to the front of a cutter head; a bit-housing hole formed in the valve body to detachably accommodate a bit; and an exchange seal part located at the front of the chamber and at a symmetrical position from the aperture with respect to the pivot axis (Ob). The valve body is pivoted about the pivot axis (Ob) to move the bit, which faces the aperture, to the exchange seal part, allowing the bit to be removed from the bit-housing hole and exchanged. | 08-07-2014 |
20160097276 | CONTINUOUS MINING MACHINE HAVING CORE CUTTING ASSEMBLY - A core cutting assembly is disclosed for use with a continuous mining machine having a milling drum. The core cutting assembly may have a drive mechanism configured to rotate about a first axis of the milling drum. The core cutting assembly may also have at least one rotary cutting bit powered by the drive mechanism to rotate about a second axis that is substantially orthogonal to the first axis. | 04-07-2016 |
20160130941 | MODULAR CUTTING HEAD - A cutting head for hard rock mining applications is disclosed. The cutting head may have a base member. The base member may have a rotational axis and may include a center bore extending along the rotational axis. The cutting head may also have a drive bushing disposed within the center bore. The drive bushing may be configured to transmit torque from a driving device to the base member. The cutting may further have a plurality of annular tool supports. Each of the plurality of annular tool supports may be concentrically disposed about the rotational axis in a releasable manner. In addition, the cutting head may have a plurality of cutting bit carriers attached to each of the plurality of annular tool supports. Each of the plurality of cutting bit carriers may be configured to rotatably support a cutting bit. | 05-12-2016 |
299058000 | Machine follows cutter into opening formed thereby | 6 |
20080217986 | Extendable cutter drum for a boring machine - A mining machine that includes a rotor assembly disposed on a mobile frame. A cutter drum assembly includes an intermediate drum section and a pair of end drum sections. The end drum sections are drivingly connected by the intermediate drum section. The end drum sections include an axially fixed drum portion and a drum extension that is axially movable on the drive shaft to extend the length of the cutter drum assembly. A hydraulic piston and cylinder arrangement is disposed in shafts supporting the end drum sections, and extends and retracts the drum extension with respect to the fixed drum portion. A torque transfer arrangement is disposed between the fixed and extension drum portions for mutual rotation. | 09-11-2008 |
20100270849 | HEADING MACHINE - In a heading machine ( | 10-28-2010 |
20120274122 | BIT REPLACING DEVICE FOR EXCAVATING MACHINE - A valve containing portion ( | 11-01-2012 |
20160032724 | RIPPING AND SCRAPING CUTTER TOOL ASSEMBLIES, SYSTEMS, AND METHODS FOR A TUNNEL BORING MACHINE - Embodiments of the invention generally relate to tunnel boring machine cutter assemblies, such as ripping and scraping cutter or tool assemblies, (collectively “cutter assemblies”), and related methods of use and manufacturing. The various embodiments of the cutter assemblies described herein may be used in tunnel boring machines (“TBMs”), earth pressure balance machines (“EPBs”), raise drilling systems, large diameter blind drilling systems, and other types of mechanical drilling and excavation systems. | 02-04-2016 |
299059000 | Relatively driven cutters | 2 |
299060000 | Cutting area of one encircled by another | 2 |
20080217987 | Drilling apparatus and system for drilling wells - A device for boring a well. The device is attached to a motor that has a power shaft for imparting rotational movement. The device comprises a driver operatively connected to the power shaft, with the driver containing a tubular body, a first bit having a first end connected to the driver so that rotational movement of the driver is imparted to the first bit, and a sleeve disposed about the power shaft, and wherein the sleeve has a radial shoulder. The device further comprises a housing disposed about the driver and a second bit attached to the housing. A plurality of nozzles is operatively placed within the driver, and the nozzles deliver fluid flow to the second bit. The device may further include a planetary gear anchored to the radial shoulder, and wherein the planetary gear is adapted for imparting rotation from the driver to the housing in a counter radial direction. | 09-11-2008 |
20140084668 | EXCAVATION MACHINE - An excavation machine having a cutter head with a large diameter while making it possible to excavate excavation objects such as hard bedrock etc. with high efficiency is provided. The excavation machine comprises an outer circumference cutter head | 03-27-2014 |