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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7121919 | Chemical mechanical polishing system and process Chemical mechanical polishing (CMP) systems and methods are provided herein. One aspect of the present subject matter is a polishing system. One polishing system embodiment includes a platen adapted to receive a wafer, and a polishing pad drum that has a cylindrical... | 10/17/2006 |
| 7101269 | Cylindrical grinding machine Disclosed is a cylindrical grinding machine of the type that a workpiece support device composed of a work head and a foot stock is mounted on a forward upper portion of a bed while a wheel head unit composed of a slide base and a wheel head is mounted on a rear upp... | 09/05/2006 |
| 6923603 | Machine tool with a feature for preventing a thermal deformation A machine tool 1 comprises a spindle head 11 for supporting a spindle 9 to which a tool 7 is fitted, a column 5 for supporting the spindle head 11 and a table 13 for mounting a workpiece 15, and machines the wo... | 08/02/2005 |
| 6685536 | Method for grinding convex running faces and outside diameters on shaft-like workpieces in one set-up and grinding machine for carrying out the method The invention relates to a method for grinding convex running surfaces and exact outside diameters on undulated workpieces. In a clamping, a first convex running surface is ground on a discoid partial section of an undulated workpiece during a first grind... | 02/03/2004 |
| 6592430 | High-precision machining system A rotation axis of a work spindle and a rotation axis of a spindle primary-axis portion are rotated relative to each other and feeding of a work-piece to a tool is accordingly adjusted, whereby warpage of the tool in accordance with a change in machining ... | 07/15/2003 |
| 6358115 | Dicing apparatus A dicing apparatus is provided with a first position for feeding a workpiece before dicing, a movable machining table capable of retaining the workpiece, a second position for mounting the workpiece before dicing on the machining table, a third position f... | 03/19/2002 |
| 6203401 | Device for superfinishing treated surfaces A device for superfinishing of ground surfaces of workpieces has a finishing block, which can be displaced by means of a drive device in a plane which is orthogonal with respect to the surface to be worked and is pivotable in this plane. By means of this ... | 03/20/2001 |
| 6200204 | Roll grinder with vibration dampening A roll grinder system including a roll grinder bed of high dynamic stiffness, having a roll support and a grinding wheel support fixedly mounted to the roll grinder bed. The roll grinder bed is comprised of a monolithic epoxy granite block with a steel pl... | 03/13/2001 |
| 6190242 | Universal grinding machine A universal grinding machine having a plurality of workpiece holders, each of which can be moved independently of each other or jointly, by a separate slide, in the longitudinal direction of the workpiece on a slide guide disposed on the machine bed, or w... | 02/20/2001 |
| 5839944 | Apparatus deterministic magnetorheological finishing of workpieces A method and apparatus for finishing a workpiece surface using MR fluid is provided wherein the workpiece is positioned near a carrier surface such that a converging gap is defined between a portion of the workpiece surface and the carrier surface; a magn... | 11/24/1998 |
| 5800249 | Fiber shaper Reconditioning a fiber for laser applications by cleaving off its tip and shaping the cleaved end into a conical or pyramidal shape with a grinder. The cleaved end is grasped in a fiber holder. The grinder is driven, e.g., to rotate. The fiber holder is m... | 09/01/1998 |
| 5738564 | Numerically controlled grinding machine for grinding workpieces, in particular tools A numerically controlled grinding machine for grinding workpieces, such as tools, and other metallic or ceramic elements, comprises a machine bed (1) having fixedly connected to it a rigid, distortion-free portal (9) which has a reinforcing rear wall (13)... | 04/14/1998 |
| 5738572 | Grinding machine A grinding machine has a machine frame and a grinding spindle support positioned on the machine frame. At least one grinding spindle is arranged with upwardly slanted axis at the grinding spindle support. A grinding wheel is connected to the grinding spin... | 04/14/1998 |
| 5727990 | Method for mirror-polishing chamfered portion of wafer and mirror-polishing apparatus A method and an apparatus, which enable mirror-polishing a peripheral chamfered portion of a semiconductor wafer effectively, are disclosed. Mirror-polishing a peripheral side surface of the chamfered portion of the wafer, beveled surfaces thereof, and ro... | 03/17/1998 |
| 5187900 | Auxiliary device for a machine tool An auxiliary device for a machining tool that converts a standard rotary machining tool into an oscillation-machining tool. The device has a chuck, or other workpiece gripping device, at an upper end of a shaft. The shaft may be rotated around an axis par... | 02/23/1993 |
| 5035086 | Cylindrical grinding machine suitable for use on the rolls of a rolling mill or the like A grinder capable of disassembling a pair of rolls of a rolling mill each having a pair of bearing assemblies on its opposite ends, separately grinding and reconditioning the disassembled rolls, and reassembling the reconditioned rolls. Included are a pai... | 07/30/1991 |
| 4989378 | Method for internal grinding Apparatus for internally grinding rotationally-symmetrical workpieces, the grinding disc of which only abuts against the end face of the workpiece and has a generatrix which extends in a substantially flat manner and, by subtending a small clearance angle... | 02/05/1991 |
| 4989377 | Apparatus for internal grinding Apparatus for internally grinding rotationally-symmetrical workpieces, the grinding disc of which only abuts against the end face of the workpiece and has a generatrix which extends in a substantially flat manner and, by subtending a small clearance anle,... | 02/05/1991 |
| 4850146 | Apparatus for grinding a workpiece A wheel slide 20 for supporting a grinding wheel 40 is mounted on a carriage 100 which extends across a work area to engage parallel horizontal ways 61, 62 on opposite sides of the axis of rotation B of a workpiece W. The carriage 100 has ways 114, 115, 1... | 07/25/1989 |
| 4813186 | Apparatus for converting a compressed air operating pulse to a hydraulic operating pulse for a grinding machine especially for a precision griding machine An apparatus is provided for converting a pressurized air operating impulse to a hydraulic operating impulse, especially for a precision grinding machine. The apparatus comprises at least one tool support, a compressed air control system for a plurality o... | 03/21/1989 |
| 4672776 | Circular blade sharpening device A sharpening device for a circular-shaped blade of the type used on a rotary meat trimming knife. The blade is rotatably mounted on a power driven blade holder which is movable horizontally along a base. A grinder which includes a motor and a power driven... | 06/16/1987 |
| 4580367 | Abrading apparatus Apparatus for grinding irregular surfaces of a workpiece includes a frame, a slide movable longitudinally on this frame, a shaft mounted for rotation on the slide and having a workholder mounted on it, a grinder adapted to contact the surface to be ground... | 04/08/1986 |
| 4510716 | Grinding machine having improved dressing means An automatic external cylindrical grinding center (10), having a pair of driven grinding wheels (86, 88) capable of straight and angular wheel feed for grinding a workpiece in on-center or chucking configurations. The grinding center (10) has a base (16) ... | 04/16/1985 |
| 4468891 | Machine for point grinding drills A method of and machine for point grinding drills by supporting the drill to be pointed in a relatively fixed position and thereafter moving the drill and a bevelled grinding surface relative to each other while rotating the drill about its axis, and by s... | 09/04/1984 |
| 4443975 | Dual wheel cylindrical grinding center An automatic external cylindrical grinding center (10), having a pair of driven grinding wheels (86, 88) capable of straight and angular wheel feed for grinding a workpiece in on-center or chucking configurations. The grinding center (10) has a base (16) ... | 04/24/1984 |
| 4330962 | Assembly of grinding-wheels of grinding machines The grinding machine comprises a frame, a stationary table for supporting a grinding-wheel carriage, and a bed for supporting a movable table. The workpiece to be ground is mounted between a headstock and a tailstock which are carried by the movable table... | 05/25/1982 |
| 4274229 | Frames of grinding machines The grinding machine comprises a frame having an upper portion in the form of a stationary table for supporting a grinding-wheel carriage, and a bed provided with slideways for supporting the headstock and tailstock between which is mounted the workpiece ... | 06/23/1981 |
| 3959930 | Apparatus for cutting off cast parts from a runner of a casting body An apparatus for cutting off cast parts from a cylindrical runner of a casting body comprises a slidable mount supported on a bed, holding means provided on the slidable mount for supporting and indexing the casting body and a cutting grinder supported up... | 06/01/1976 |
