Undercutter Shiftable Horizontally Patents (Class 299/66)
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Patent number: 8573705Abstract: A mining apparatus includes a miner, a conveyor unit and a steering unit connecting the miner and conveyor unit. The apparatus also includes a heading sensor and a controller responsive to the heading sensor. A first actuator is carried on the miner, the control unit or the steering unit. The first actuator is positioned to a first side of a midline of the miner. Further a second actuator is carried on one of the miner, the conveyor unit and the steering unit. The second actuator is positioned to a second opposite side of the midline of the miner. The first and second actuators are utilized to adjust a connection angle between the miner and the conveyor unit either side of parallel in order to maintain the miner on the desired directional heading.Type: GrantFiled: April 1, 2004Date of Patent: November 5, 2013Inventors: John A. Baird, Jr., Ian T. Carr
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Patent number: 8240776Abstract: A continuous mining machine in which the machine is capable of mining a width exceeding the width of the machine chassis by articulating the cutter end of the machine relative to the rear of the machine.Type: GrantFiled: March 2, 2009Date of Patent: August 14, 2012Inventor: Roger Dale Plumley
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Publication number: 20090066148Abstract: 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.Type: ApplicationFiled: September 8, 2007Publication date: March 12, 2009Applicant: JOY MM DELAWARE, INC.Inventor: John E. Willison
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Patent number: 6694119Abstract: A perfecting press apparatus for forming images on both sides of a transfer medium. With respect to a transferring current Ipt of an image forming unit, current Ipc is made large which flows from a charge control instrument for controlling charge polarity of the toner on the transfer medium in the direction of the transfer medium. In particular, in the image forming unit causing retransfer, a de-charging light source is installed between the a developing device and a transferring device for canceling charges other than at a latent image part of an image carrier, so that the relationship between Ipt and Ipc is to be 3×Ipc≦Ipc≦6×Ipt, whereby the retransfer is suppressed to minimum for producing satisfied quality of image.Type: GrantFiled: March 7, 2003Date of Patent: February 17, 2004Assignee: Hitachi Printing Solutions, Ltd.Inventors: Takashi Rokutanda, Yukio Otome, Hiroyuki Mabuchi
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Patent number: 5653508Abstract: 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 relative to each other, (d) a crane carried by said first support, and rotatably attached through an upright axis, and (e) means for power actuated rotation of the crane about the upright axis.Type: GrantFiled: August 15, 1995Date of Patent: August 5, 1997Inventor: Gary Lee Carney
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Patent number: 4550787Abstract: This invention is a machine assembly, including a post, an earth excavating machine and a crane interchangeably mountable on the post; the earth excavating machine including a sleeve enclosure around the post, a radially extending ground surface toothed scraper attached to the enclosure, a vertical screw inside the enclosure, and a loose earth conveyor belt extending from the sleeve, and the crane including a horizontal arm, a structure that rotates or elevates the arm and a cable assembly that suspends the arm adjustably from the post.Type: GrantFiled: July 5, 1983Date of Patent: November 5, 1985Inventor: Alexander Stefan
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Patent number: 4080000Abstract: An excavating and/or tunneling machine having a mobile support unit with suitable endless tracks for advancing the unit. The support unit serves as the base or chassis for an excavating screw, impact devices and excavating boom tools which all are cooperatively brought into operation to cut into material to be mined, excavated and/or tunneled.Type: GrantFiled: September 30, 1976Date of Patent: March 21, 1978Inventor: Friedrich-Wilhelm Paurat
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Patent number: 4059309Abstract: An apparatus for cutting a deep slot, having a large depth to thickness ratio, in earth formations, which includes two main components, a motive means and a cutting assembly; the motive means, such as a crawler tractor, supports the projecting end of the cutting assembly, supplies a small portion of the driving force needed to advance the cutting assembly, and provides, through various connections, power, control functions, and the fluids required for operation of the cutting assembly; and the cutting assembly, extending the full depth of the slot along its advancing edge, includes an elongated support, a reciprocating cutter bar mounted on the leading edge of the support, a passage incorporated in the support for transmitting a fluid, generally a high gel strength clay paste, along the support and discharging the fluid in the interior of the slot, in a sufficient amount and under sufficient pressure to resist the earth pressure tending to close the slot and to provide a major portion of the force necessary tType: GrantFiled: August 12, 1975Date of Patent: November 22, 1977Inventor: James M. Cleary
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Patent number: 3999805Abstract: According to the present invention, an articulated support arrangement for carrying a tool comprises a support member, a turret pivotally attached thereto, means to rotate the turret with respect to the support member, link means pivotally connected between one part of the turret and one part of a boom, at least one ram pivotally connected between another part of the turret and another part of the boom, means to rotate the link means about the pivotal connection thereof at the turret, the boom comprising a rear portion having a part capable of rotation about the longitudinal axis of the boom, means to effect such rotation, and a front portion attached at one end to that part and at the other end pivotally attachable to a tool or mounting thereof, with a ram pivotally attached at one end to the front portion of the boom and the other end being operable on the tool.Type: GrantFiled: November 26, 1974Date of Patent: December 28, 1976Assignee: Lockwood Bennett Ltd.Inventor: Peter Lockwood
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Patent number: 3998493Abstract: A support displaceable along a tunnel or gallery floor by means of a caterpillar drive is provided with a rotatable milling tool that can be brought into engagement with a lower portion of a face wall and with a reciprocal hammer engageable with an upper portion of the wall. The miller is operated to cut or grind material off the lower portion so as to undercut the wall. Then the hammer is operated to chip or break off the upper portion of the undercut wall. Both the miller and hammer are mounted on adjustable and directable arms. The loosened rock is carried off by a scoop-transport belt arrangement.Type: GrantFiled: June 25, 1975Date of Patent: December 21, 1976Inventor: Friedrich Wilhelm Paurat