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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 |
| 8021213 | Acrylic polisher An acrylic polisher includes: a base with two oppositely disposed sideboards with a notch on each of them and a disposition surface in between, a cutting blade set performing a cutting process along the edge of the disposition surface, a stopping board driven by a d... | 09/20/2011 |
| 7578729 | Apparatus at a flat card or roller card for grinding a clothing drawn onto a rotating roller, having a carrying device In an apparatus at a carding machine for grinding a clothing drawn onto a rotating roller, having a carrying device with at least one grinding element, the carrying device is attached to the carding machine. In order to make it possible, by means that are simple in ... | 08/25/2009 |
| 7255636 | Hybrid burnishing head design for improved burnishing of disk media A hybrid burnishing head for processing of surfaces of hard disk media comprises a solid body including a first major surface and a second, opposed major surface comprising a burnishing surface including first and second surface portions, wherein the first surface p... | 08/14/2007 |
| 7172500 | Knife sharpener A knife sharpener has a housing, a base, a sharpening device and an adjustable device. The housing has a case, a cavity and a slot. The cavity is defined in the case and the slot is defined in the case and communicates with the cavity. The base is mounted on the hou... | 02/06/2007 |
| 7140949 | Tool and process for chrome plating a vehicle wheel surface A cutting tool having a crystalline tip is pressed with a uniform pressure against the outboard surface of a vehicle wheel as the wheel is rotated. The smoothed wheel surface is then chrome plated to provide a cosmetic finish to the wheel face. ... | 11/28/2006 |
| 7104868 | Turning tool for grooving polishing pad, apparatus and method of producing polishing pad using the tool, and polishing pad produced by using the tool Disclosed is a turning tool for cutting circumferential grooves into a surface of a polishing pad formed of a resin material and utilized for polishing semiconductor devices. The turning tool comprising a cutting part arranged to have a tooth width within a range of... | 09/12/2006 |
| 7101263 | Flank superabrasive machining The present invention relates to a quill to be used to superabrasively machine complex shapes, such as airfoil shapes, into a substrate. The quill has a shaft portion, an enlarged head portion adjacent the shaft portion, and a tapered grinding portion adjacent the e... | 09/05/2006 |
| 6971949 | Sharpening guide for dental tools A sharpening guide for a dental tool is provided, with the dental tool having a handle, a working portion, and a shank extending between the handle and the working portion. The sharpening guide includes a guide body and at least one opening formed in the guide body ... | 12/06/2005 |
| 6893330 | Tool and process for chrome plating a vehicle wheel surface A cutting tool having a crystalline tip is pressed with a uniform pressure against the outboard surface of a vehicle wheel as the wheel is rotated. The smoothed wheel surface is then chrome plated to provide a cosmetic finish to the wheel face. ... | 05/17/2005 |
| 6890243 | Processing method and apparatus of distal end of optical fiber A method and apparatus are disclosed wherein, while holding an optical fiber 1 by an optical fiber holder section 4 so as to serve a distal end 1a of the optical fiber 1 as a free end and holding the distal end 1a of ... | 05/10/2005 |
| 6866569 | Blade sharpening apparatus An apparatus for sharpening a blade having a base member with a slot for receiving and guiding a blade to be sharpened, first and second apertures disposed on either side of the slot, first and second resilient biasing members disposed in association with each of th... | 03/15/2005 |
| 6848983 | Drywall knife or blade refinisher tool Presented is a blade sharpener, resurfacer, and planer, for sharpening flat or beveled blades of a linear edged tool, such as a drywall finishing tool and other tools edges, such as concrete trowel blades. The device of the invention makes using a file for such task... | 02/01/2005 |
| 6679767 | Device for processing a knife-edge The invention concerns a device for sharpening or polishing the blade of a knife, having a slit 2 which is provided in a base plate 1 and which is open towards the outside, for guiding the knife blade, and with processing rods 3, 3' which are pivotably di... | 01/20/2004 |
| 6468132 | Grinding arrangement A grinding arrangement for grinding knives of a chopper drum of a forage harvester includes a movement arrangement for effecting movement of a grinding stone over the length of each of the knives, where individual locations of the knives can be associated... | 10/22/2002 |
| 6273793 | Apparatus and method for reducing disc surface asperities to sub-microinch height A honing head for microburnishing surface of a recording/reproducing disc to a smoothness at which asperities are limited to submicron heights including a hardened contact bearing surface having an array of depressions with abrupt trailing edges interconn... | 08/14/2001 |
| 6007413 | Apparatus and method for midspan access of encapsulated optical fibers Midspan access to selected optical fibers which are encapsulated in an optical ribbon or tube is achieved by placing the desired span of the encapsulated fibers to be accessed between opposing abrasive layers and controllably urging at least one of the ab... | 12/28/1999 |
| 5863237 | Low speed burnishing of asperities in a disc drive A method of and apparatus for burnishing a surface of a magnetic disc of a disc drive are disclosed. The disc drive has a data head and an actuator supporting the head as the head flies above the surface of the disc. A controller causes the disc to be rot... | 01/26/1999 |
| 5853318 | Roll surface grinder A roll surface grinder includes a frame mounted on a carriage assembly for traversing movement between opposite sides of the frame in a direction parallel to the axis of the roll subject to grinding. The carriage assembly includes a linear drive system fo... | 12/29/1998 |
| 5807167 | Foam pad resurfacer A resurfacer for resurfacing a working surface of a foam pad used for polishing auto finishes, in particular, includes a base having a support surface for supporting a polishing pad while it is being driven by a polisher power unit with which the polishin... | 09/15/1998 |
| 5382189 | Hand held abrasive disk A hand held abrasive disk for deburring, honing, finishing and polishing, or sharpening a material that can be easily held in one's hand. The abrasive surface has a concave section for receiving the filings from the abraded material. A cap is releasably a... | 01/17/1995 |
| 5185967 | Apparatus for truing out of round rotating components An apparatus for truing out of round components of rotating mechanisms includes a grindstone and a weighted hand held holder for the grindstone. The holder includes a sleeve with a passageway for receiving the grindstone telescopically therein and for rem... | 02/16/1993 |
| 5121573 | Wire cleaning apparatus and system Apparatus, for in-line cleaning of wire being formed, disposes abrasive elements in confronting relationships on opposite sides of the travel path and in surface contact with the wire running between them.... | 06/16/1992 |
| 4539776 | Methods of and apparatus for polishing an end portion of a terminated lightguide fiber An apparatus (20) is provided for polishing an end of a plug-terminated lightguide fiber so that when it is disposed together with another plug-terminated fiber within a biconical sleeve (38), there is precise end separation of opposing end portions of th... | 09/10/1985 |
| 4357864 | Pneumatic grain conveyance rice mill A rice mill comprising grain feed means, grain husking means connected to said grain feed means, paddy removing means connected to said grain husking means, first grain elevating means connected to said paddy removing means, grain polishing and whitening ... | 11/09/1982 |
| 4182084 | Blade sharpener A multi-part assembly of a honing disc base and a blade carrying cover to permit rotational contact of blade edges and honing surface for correct angle sharpening of the blade cutting edge of rotary type shavers.... | 01/08/1980 |
| 4170849 | Rotary machine for three-dimensional polishing of workpieces shaped as solids of revolution in a magnetic field using ferromagnetic abrasive powders The rotary machine for three-dimensional polishing of workpieces shaped as solids of revolution in a magnetic field using ferromagnetic abrasive powders comprises an electromagnetic system incorporating an annular working air gap adapted for the ferromagn... | 10/16/1979 |
| 4169713 | Machine for three-dimensional polishing of workpieces shaped as solids of revolution in a magnetic field using ferromagnetic abrasive powders The machine for three-dimensional polishing of workpieces shaped as solids of revolution in a magnetic field using ferromagnetic abrasive powder comprises an electromagnetic system having an air gap for the ferromagnetic abrasive powder to retain therein,... | 10/02/1979 |
