Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7316456 | Roadheading or mining machine with roof bolt drilling and setting devices In a roadheading or mining machine including cutting tools movable over the mine face and roof bolt drilling and setting devices, at least two roof bolt drilling and setting devices are pivotally connected with the machine laterally outside the longitudinal central ... | 01/08/2008 |
| 7198332 | Device for producing a gas-liquid mixture in the vicinity of cutting tools In a device for producing a gas-liquid mixture and, in particular, air-water mixture in the region of cutting tools, particularly chisels, arranged on at least one cutter head (10) rotationally mounted on a cutter arm (5) of a cutting machine (1... | 04/03/2007 |
| 7175237 | Hewing or cutting roll In a hewing or cutting roll including a central roll part and at least one lateral roll part telescopically extractable in the axial direction of the roll, wherein the central roll part and the extractable roll part have each a connection site for a hydraulic cylind... | 02/13/2007 |
| 6942301 | Method for boring and placing bolts for imbedding adhesively and device for carrying out this method A method and device for drilling and setting adhesive anchor bolts close to the mine face during the cutting operation of a tunneling or mining machine which is capable of being displaced on a traveling mechanism and includes a cutting cylinder or cutting head rotat... | 09/13/2005 |
| 6854952 | Device for extending or shortening a network of pipes In a device for extending and shortening tubings used to transport drill cuttings and stripped material, a tube storage or tube magazine is provided on a frame (1) capable of being supported on the floor, wherein at least one lifting means (3) capable ... | 02/15/2005 |
| 6785988 | Driving or mining machine A driving or mining machine includes a pivotable cantilever arm that is hinged so as to be pivotable in the height direction to a pivoting mechanism capable of being pivoted about a substantially vertical axis and on its free end carries rotationally mounted excavat... | 09/07/2004 |
| 6428109 | Mining machine with sliding cutting tool assembly In a cutting machine (2), including rotatably mounted cutting or shearing tools (19), a loading ramp and a hauling means (4) extend in a direction towards a mine face for receiving and hauling cut or sheared material. The cutting or shearing tools (19) ar... | 08/06/2002 |
| 5913573 | Roof bolt drilling and setting apparatus A displaceable mining machine (1) comprises roof bolt drilling and setting apparatus (5, 13). A conveyor (6) is articulately pivotable in a rear portion of the machine about axes (16, 16') in order to provide space for a roof bolt drilling and setting app... | 06/22/1999 |
| 5881832 | Method of controlling interlinked vehicles in mining and tunnelling as well as arrangement for carrying out this method A method of controlling interlinked vehicles in mining and tunnelling operations with at least one of the vehicles having a travelling mechanism is disclosed. Distance measurements to adjacent wall surfaces which define a path of movement are taken on opp... | 03/16/1999 |
| 5673974 | Dry dust removal device The dry dust removal device for tunnelling or extraction machines includes a suction fan (15) and suction openings (14) close to the cutting rolls (23). There is a filter element (12) arranged above the conveyor device (2) of the tunnelling or extraction ... | 10/07/1997 |
| 5498069 | Bit holder with a detachably fixed bit bushing The bit holder (1) is nonpositively connected to a bit bushing (3) with adherence to a pressure per unit of surface area of >100N/mm2 between the conical outer surface of the bit bushing (3) and the inner wall of the receiving bore (2) of the b... | 03/12/1996 |
| 5333936 | Low profile mining machine having a cutter mounted on a slidable carriage A cutter machine has cutter heads or rollers rotatably mounted on a pivoting cutter arm. It also has a loading ramp and a conveyor running in a direction towards the work face of the cutter machine to take up and convey away cut material. The cutter arm i... | 08/02/1994 |
| 5178494 | Roof support for underground excavations such as coal mines A roof support for the ceilings of excavated spaces underground and particularly for supporting caving edges for pillar recovery in coal mines is described. The roof support has a roof bar connected to a base frame by hydraulically extendable props and by... | 01/12/1993 |
