Famous Patents
In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
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 |
| 7314253 | Plough for underground mining A coal plough for underground mining has a plough body that is guided along a plough guide. The plough body has at least one foot piece which receives a sliding skid. The sliding skid has at least one contact surface formed on its underside, which surface slides on ... | 01/01/2008 |
| 7125859 | Nucleic acid antioxidant compositions, methods for obtaining such compositions and formulations thereof Compositions containing purified nucleic acid wherein the nucleic acid acts as an antioxidant. Such compositions also include materials subject to oxidative damage such as antioxidants, vitamins, lipids, foods and pharmaceuticals. The invention also includes methods... | 10/24/2006 |
| 6666523 | Reef miner with disk and drum cutters A mining machine is employed in a mechanized method for removing mineral from a reef in a rock face. The mining machine comprises a first cutting disc rotatably mounted on one side, a second cutting disc rotatably mounted on the machine, at a position off... | 12/23/2003 |
| 5941154 | Guide shoe for a cutting machine The guide shoe according to the invention for cutting machines with a pintype drive has an insertion pocket in which a coupling piece engages from above, which coupling piece is arranged on a guide arm of the cutting machine and to which the guide shoe is... | 08/24/1999 |
| 5931541 | Drive mechanism for a combined cutter loader The subject of the invention is the drive mechanism especially of the combined cutter loader in which the indirect toothed wheel (4) is placed between the toothed wheel (3) and the drive wheel mechanism (5) and is mounted on axis (8), which is mounted in ... | 08/03/1999 |
| 5234256 | Cutting apparatus for mining operations with automatic control A cutting machine for mining minerals from a seam thereof, the machine executing reciprocal movements parallel to the face of the seam and being provided with switches for generating signals indicative of the direction of movement of the machine for contr... | 08/10/1993 |
| 5228751 | Control system for longwall shearer Apparatus for measuring the degrees of roll of the body of a longwall shearing machine and providing signals proportional to the roll angle which are used to control drum cutting positions for controlling roof and floor horizons of a coal tunnel.... | 07/20/1993 |
| 5224762 | Sliding seal for mining machine power tranmission A power train for driving a functional mechanism of a mining machine includes a sealing mechanism extendable across the space between drive and driven units in the power train and surrounding a drive shaft extending between the two units. The sealing mech... | 07/06/1993 |
| 5180251 | Underground protection underneath a dump A dump sitting on the ground is isolated by first driving a tunnel longitudinally through the ground underneath the dump, then cutting from at least one side of the tunnel with a longwall-mining machine a longitudinally and transversely extending slit hav... | 01/19/1993 |
| 5106162 | Method of steering a mining machine A method of steering a double-ended ranging drum mining machine includes the steps of positioning two previous cut roof followers spaced apart longitudinally of the machine, measuring machine tilt using a second means, estimating coal thickness using thir... | 04/21/1992 |
| 4955668 | Drum cutter-loader equipped with an auxiliary drum A drum cutter-loader mining machine equipped with an auxiliary debris crushing drum. The machine includes a cutter drum support arm and an auxiliary drum jib which are independently pivotable about a common pivot axis. The device further includes means fo... | 09/11/1990 |
| 4944558 | Drum cutter-loader for underground mining In order to overcome problems associated with drum cutter-loader mining machines having a cutting drum mounted at one or both ends of the machine on pivotable support arms and further having cutting drum drive motors positioned outside of the machine body... | 07/31/1990 |
| 4943120 | Force transmitting housing for longwall mining machine An improved drum-cutter mining machine design which transmits force exerted upon a drive wheel during translation of the mining machine along a rack structure to the machine. A protective housing encloses gears and a drive wheel in a manner such that feed... | 07/24/1990 |
| 4898428 | Power supply system for an underground mining machine A power supply system for a drum-cutter mining machine utilized in longwall mining operations. Three-phase electrical power is supplied to a rectifier circuit positioned remote from the mining machine to rectify the three-phase electrical power. Rectified... | 02/06/1990 |
| 4896920 | Drum-cutter mining machine A drum-cutter mining machine for longwall mining operations which is adaptable for use upon longwall conveyor systems having rack structures positioned on either, or both, sides thereof. Drive motors are removably supported in a capstan housing of the min... | 01/30/1990 |
| 4889393 | Drum cutter-loader for underground mining machine In a drum cutter-loader underground mining machine, wherein the drum is rotatably carried by an arm arranged adjacent to the coal face side of the machine. The arm is pivotally adjusted by a number of pressure cylinders and carried on an axis arranged bet... | 12/26/1989 |
| 4887867 | Ranging drum shearers The invention relates to ranging drum shearers having cutting drums driven by electric motors mounted on the respective ranging arms. A coal sizer is pivotably mounted on a shroud of the motor and is maintained at a constant disposition regardless of the ... | 12/19/1989 |
| 4883323 | Longwall mining machine for the mining of thick mineral seams A drum cutter mining machine translatable along a longwall conveyor includes an auxiliary cutting drum for breaking up pieces of mineral carried by the longwall conveyor system. The auxiliary cutting drum is supported by a jib and an arm extension affixed... | 11/28/1989 |
| 4828326 | Shearer loader for underground mining operation A shearer loader for underground mining operations including a duplex-input transmission coupled to the haulage box drive motor of the shearer loader. A first input of the duplex-input transmission is coupled to the haulage box office motor, and a second ... | 05/09/1989 |
| 4822105 | Double ended ranging drum shearer and method of controlling working height in mining face in use of the same A double ended ranging drum shearer is provided with a shearer body and a pair of drums disposed at front and rear end portions of the shearer body to be movable up- and down-wardly. The shearer is further equipped with detectors for respectively detectin... | 04/18/1989 |
| 4741577 | Double ranging drum cutter having load controller According to the applicant's invention a load detector is used, in which a load sensor and a vibration sensor are combined using an AND gate. A load signal from the load detector is used for the feedback control of the cutter drum height and double rangin... | 05/03/1988 |
| 4664449 | Drift advancing or mining machine A drift advancing or a partial-cut mining machine (1) comprises a cutting arm (11) being swivellable in a height direction around an axis (10). The front end of the cutting arm (11) is equipped with guides (26) transversely extending relative to the longi... | 05/12/1987 |
| 4660892 | Sectorial sprinkling device for coal mining A sectorial sprinkling device for coal mining includes, in the central portion of a cutting drum of a cutting machine, a plurality of concentric piping systems which are connected to water delivery means. An interior piping system is permanently connected... | 04/28/1987 |
| 4648659 | Method and hydraulic system for controlling supply of fluid to combine for extracting minerals A method for controlling the supply of fluid to a combine, wherein fluid is fed for actuating hydraulic cylinders 14, 15 of the drive for moving the combine and to a dust suppression hydraulic system 1. The same fluid, which is discharged from the hydraul... | 03/10/1987 |
| 4643482 | Steering of mining machines A double-ended ranging drum shearer is steered along a longwall face by using a series of spaced reference locations A, B, C, D, E, F, G, H. I . . . . The machine position is sensed so as to identify when the leading and trailing drum reach each desired r... | 02/17/1987 |
| 4634186 | Control system for longwall shearer A control system for controlling the elevation of a cutter of a longwall shearer in which the attitude of the body of the shearer and the rate of change of attitude with longitudinal movement of the shearer are monitored and the elevation of the cutter is... | 01/06/1987 |
| 4571003 | Apparatus for controlling the position of a mineral mining machine Apparatus for controlling the position of a mineral mining machine, such as a coal plough, guided for movement back and forth along a guide employs inclined piston and cylinder units coupled via ball-and-socket joints to brackets on a conveyor supporting ... | 02/18/1986 |
| 4568128 | Rotary cutter heads for mineral mining machines A rotary cutter head for a mining machine is provided with a plurality of cutter tools mounted on an annular end component which defines the end of the cutter head remote from the mining machine. Ventilating means are provided comprising air flow guide pa... | 02/04/1986 |
| 4565410 | Apparatus for controlling the supply of high-pressure liquid to a cutter drum assembly High-pressure liquid is controlled for delivery to nozzles disposed near cutting tools or on the periphery of a shearer drum for a longwall mining machine. The shearer drum includes a central shaft which is extended to project from a support arm for the d... | 01/21/1986 |
| 4514011 | Power and liquid supply system for mining machines An electrical power supply and liquid supply arrangement for a mining machine, particularly a longwall mining machine, wherein extended lengths of a power supply cable and liquid supply conduit are disposed within a housing structure extending along one s... | 04/30/1985 |
| 4509799 | Apparatus for controlling the position of a mineral mining machine Apparatus for controlling the position of a mineral mining machine, such as a plough, guided for movement along a guide comprises inclined piston and cylinder units connected via ball-and-socket joints between connectors at the ends of elongate beams guid... | 04/09/1985 |
| 4466491 | Apparatus for removing rocks and objects Apparatus is provided for moving objects which may be partially buried. The apparatus comprises a hook-like element which may be attached to the side of a vehicle, such as a bulldozer. The hook-like element is pivotally attached so that its orientation is... | 08/21/1984 |
| 4465319 | Integrated cutter, breaker and haulage drive gearcase A longwall coal-mining machine has a gearcase at each of its ends, each gearcase carrying two ranging arms respectively mounting a cutter drum and a lump breaker, and also carrying a haulage drive. Each gearcase comprises a casing having therein first and... | 08/14/1984 |
| 4461512 | Feed system of a mining combine A feed system of a mining combine includes a track made up of pivotally interconnected tubular segments on which is installed the combine being moved. The combine has a drive gearwheel meshing with a traction rack. The traction rack is formed by individua... | 07/24/1984 |
| 4453774 | Driving arrangement for longwall mining machines The invention is particularly adapted for use with a longwall mining machine of the type having a rack extending along a track for the mining machine, a gear wheel on the machine engageable with the rack for moving the machine along a track, at least two ... | 06/12/1984 |
| 4367902 | Tool for hydromechanical or hydraulic mining or for cutting mineral or bituminous materials A tool for cutting a material along a path with a liquid jet directed onto the material for hydromechanical or hydraulic mining or for cutting mineral or bituminous material is disclosed. The tool includes a housing having an interior chamber with an open... | 01/11/1983 |
| 4357052 | Device for directing the rack The subject of this invention is a device for directing the rack of a ties feed gear to co-operation with the driving wheel of a mining machine. The guide shoe (1) is provided with an external slipper (6) and an internal slipper (7), whereby the distance... | 11/02/1982 |
| 4287831 | Friction and rack and pinion locomotive This invention relates to a suspension railroad in mines, including a monorail having an elongated friction section and an elongated rack section located above the friction section, a car suspended on the monorail and driven for moving the car along the r... | 09/08/1981 |
| 4273385 | Device for safety guiding of hauling chain especially at ranging drum shearer in coal mining A device for safety guiding of hauling chain, especially for a ranging drum shearer in coal mining equipment having chain haulage means, consists of chain screening /5/ at a guard /6/ of conveyor /7/ and of chain guides /11/ fixed to a ranging shearer /1/... | 06/16/1981 |
| 4236758 | Rack drive for a drum cutter mining machine A hollow gearwheel has internal teeth that mesh directly or through an intermediate gear with the teeth of a drive gear of a machine drive on a drum cutter mining machine. External teeth on the hollow gearwheel mesh with the teeth of a rack extending over... | 12/02/1980 |
