| JOY MM DELAWARE, INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110239896 | RACK BAR HAULAGE SYSTEM WITH AN IMPROVED RACKBAR - A rack bar haulage system including a plurality of rack bars, each having spaced apart gear teeth extending between cheek sections at opposite sides of the rack bar. The haulage system also includes a clog including two spaced apart sidewalls, and openings through the sidewalls. One cheek section has a clog wall receiving cavity adapted to receive one of the clog sidewalls, the clog wall receiving cavity being defined by spaced apart cheek section flanges. The cheek section flanges each have an opening there through, and the cheek section flange openings are aligned with the clog sidewall openings. A pin is insertable through the sidewall openings and the openings in the cheek section flanges, and the spaced apart cheek sections are positioned so that the envelope formed by the gear teeth is at the same level on the rack bar as the pin for retaining the rack bar in the clog. | 10-06-2011 |
| 20110184597 | DEVICE FOR REDUCING THE LIKELIHOOD OF DAMAGE TO A TRAILING CABLE - A device for reducing damage to an electric vehicle powered by a trailing cable, the device including an electric sensor for determining the mobile equipment's position relative to a hazard, and an electric controller responsive to the electrical means for operating a motor to change the operation of the electric vehicle to reduce the likelihood of adverse effects to the trailing cable if the electric vehicle's position is near the hazard. | 07-28-2011 |
| 20110181098 | MINER CUTTING BIT HOLDING APPARATUS - An assembly for mounting a cutter bit on a driven mechanism, the assembly comprising a bit holder including a holding portion adapted to receive the bit and a mounting base rear portion. The bit holder holding portion is a forward portion, the forward portion being separate from but connected to the mounting base rear portion. | 07-28-2011 |
| 20110181097 | MINING MACHINE WITH DRIVEN DISC CUTTERS - A mining machine including a cutting mechanism comprising an arm having an arm end, a disc cutter adapted to engage the material to be mined and mounted on the arm end. The disc cutter is driven by the arm into the material to be mined, and the arm further includes a main portion, and a wrist portion pivotally attached to the main portion. | 07-28-2011 |
| 20110181096 | RACK BAR HAULAGE SYSTEM WITH AN IMPROVED RACKBAR TO LINE PAN CONNECTION - A rack bar haulage system forms part of a drive system for moving the mining machine along a conveyor including a plurality of conveyor pans. The pans are arranged end to end, and the rack bar haulage system includes a plurality of rack bars, each rack bar end including a pillar portion extending downwardly. One rack bar is adapted to be mounted adjacent an end of a line pan, and another rack bar is adapted to be mounted adjacent the adjacent end of the adjacent line pan. The haulage system also includes a chain-link, the chain-link surrounding and engaging the two adjacent pillar portions on the ends of the one rack bar and the adjacent other rack bar. The chain-link is adapted to extend over the adjacent ends of the line pans. The haulage system also includes a clog for receiving the rack bar, the clog including an extension that engages the chain-link and traps the chain link between the extension and the rack bar. | 07-28-2011 |
| 20110181095 | RACK BAR HAULAGE SYSTEM WITH AN IMPROVED RACKBAR TO LINE PAN CONNECTION - A disclosed rack bar system utilizes a forged or cast clog with integral lugs that accept a retainer plate. The plain rack bar pins cannot pass fully through the clog and are held in place by a plate retainer. The retainer is simply secured by a spring pin, or is held in place by gravity. | 07-28-2011 |
| 20110156470 | CUTTER HEAD CONTAINING ITS MOTORS AND GEARCASE - An apparatus for mining a mineral seam, comprising a motor, and a cutting drum carried on the frame for winning aggregate material from the mineral seam. The cutting drum encloses the motor, and a gear case drivingly connected between the motor and the cutting drum transmits power from the motor to the cutting drum. The gear case is also enclosed within the cutting drum. | 06-30-2011 |
| 20110088367 | LINK CHAIN - A link chain comprises a chain link including two shank portions and two arc portions connecting the two shank portions. The two shank portions and the two arc portions define an interior space of the first chain link; and a dividing element extends inwardly from an inside surface of one of the two shank portions and extends inwardly from the inside surface of the other shank portion. The dividing element divides the interior space into two movement spaces, and the dividing element has a centerline, and the centerline is not a straight line perpendicular to the shank. | 04-21-2011 |
| 20110063139 | EXPLOSION PROOF ELECTRO-MECHANICAL JOYSTICK - A joystick comprising a housing, a ball supported and held within the housing, and a joystick handle attached to the ball. The joystick also includes a first device held within the housing, and a second device held within the housing. The joystick also includes a first engagement shaft extending from the first device to the ball, the first engagement shaft having an end adjacent the ball and engaging the ball, and a second engagement shaft extending from the second device to the ball, the second engagement shaft having an end adjacent the ball and engaging the ball. | 03-17-2011 |
| 20110037308 | CONTINUOUS MINER CENTER DRUM WITH OFFSET SPLIT SURFACES - A pair of semi-cylindrical segments adapted to be connected to form a center drum of a cutter head of a mining machine. The split line between the semi-cylindrical segments is not continuous, but lies on more than one plane. | 02-17-2011 |
| 20100276260 | MOBILE MACHINE IN MAIN CONVEYOR AND METHOD OF USING SUCH MACHINE - A storage platform is incorporated into the main conveyor. The machine is movable, and incorporates space for the storage of main conveyor structure. The machine also includes a mechanism for raising the top of the endless belt, and for permitting the lower or return portion of the endless belt to pass through the mobile machine. | 11-04-2010 |
| 20100270131 | ARMORED FACE CONVEYOR EXTENDABLE AT HEAD GATE END - A device is provided for detecting and adjusting the tension of the scraper chain. The device identifies broken chain as it leaves the return sprocket and enters the top race of the conveyor. When detected, the chain can be stopped automatically by the armored face conveyor control system, to avoid the potential for further damage, and warn the operators that repair of the chain is required. | 10-28-2010 |
| 20100270130 | DUAL SENSOR CHAIN BREAK DETECTOR - A device is provided for detecting and adjusting the tension of the scraper chain. The device identifies broken chain as it leaves the return sprocket and enters the top race of the conveyor. When detected, the chain can be stopped automatically by the armored face conveyor control system, to avoid the potential for further damage, and warn the operators that repair of the chain is required. | 10-28-2010 |
| 20100270128 | AUTOMATED FACE CONVEYOR CHAIN TENSION LOAD SENSOR IN CHAIN TENSION PLATE - A device is provided for detecting and adjusting the tension of the scraper chain. The device identifies broken chain as it leaves the return sprocket and enters the top race of the conveyor. When detected, the chain can be stopped automatically by the armored face conveyor control system, to avoid the potential for further damage, and warn the operators that repair of the chain is required. | 10-28-2010 |
| 20100266346 | ROOF BOLTING CABLE FEEDING DEVICE - A cable bolt lifting and feeding device that is a lightweight unit that mounts into a drill rig rotation unit. The device uses the mechanical power provided in the rotation unit to drive a set of wheels that engage with the cable bolt, causing the cable bolt to be pushed through the device and into a pre-drilled hole. | 10-21-2010 |
| 20100003120 | DRILLING RIG - A bolting apparatus and method for inserting a rod into a surface, the bolting apparatus including a base having a foot end and a head end, at least one stabilizing rod extendable from the base head end and having a stabilizing rod end adapted to contact a surface to be drilled, and a mechanism attached to the base between the base foot end and the stabilizing rod end and adapted to grip the rod. | 01-07-2010 |
| 20090293242 | CLIP FOR PIN RETENTION - A clip for a pin that extends from an outer surface of a member, the clip comprising a pin retaining portion and a clamp portion that surrounds the member outer surface, the clamp portion having a pin receiving opening therein adapted to receive the exposed end of the pin, and a pin retaining portion adjacent the pin receiving opening to retain the pin in the member. | 12-03-2009 |
| 20090066148 | CONTINUOUS MINER HAVING A SUMPING FRAME - A continuous miner including a support frame having a support frame front, and a sumping frame mounted on the support frame for forward and rearward movement relative to the support frame. The sumping frame has a sumping frame front, and the miner further includes a cutting drum pivotally mounted on the sumping frame, the cutting drum being positioned near the sumping frame front. The miner also includes a gathering head for gathering mined minerals pivotally mounted on the sumping frame front, and a hydraulic cylinder for pivoting and fixing the gathering head relative to the sumping frame in both the raising and lowering directions. The continuous miner also includes a first drilling platform pivotally mounted on the support frame front, a second drilling platform pivotally mounted on the support frame front and spaced apart from the first drilling platform, a hydraulic cylinder for pivoting and fixing the first drilling platform relative to the support frame independently of the second drilling platform, and a hydraulic cylinder for pivoting and fixing the second drilling platform relative to the support frame independently of the first drilling platform. | 03-12-2009 |
| 20090066147 | CONVEYOR PAN WITH IMPROVED EDGE SHAPING - A conveyor pan for use with a shearer with a skid-type shoe in a longwall mining operation, the conveyor pan including a side member having a surface adapted to be engaged by the shearer skid-type shoe, the surface being formed by a piece of the side member that extends horizontally for the length of the side member. The piece has a first end and a second end, each piece end having a top, a rear, a front and an edge. The first end edge and the second end edge are each formed by each edge being between 45 degrees removed from a vertical plane extending at 90 degrees to the horizontal plane formed by the side member surface. | 03-12-2009 |
| 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 |
