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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 |
| 8096157 | Method and device for rolling up a metal strip The invention relates to a method for rolling up a metallic strip (1), in particular a steel strip, to a coil (2), the strip (1) being kept under longitudinal tension between a driver (3), consisting of at least one driver top roll (4 | 01/17/2012 |
| 7584638 | Device and method for calibrating a planishing roller device by means of an instrumented bar A device for calibrating a multi-roll leveler for leveling a metal strip includes an assembly having two series of rolls, namely upper rolls and lower rolls which face each other so as to imbricate the rolls of one series into those of the other. The series of rolls... | 09/08/2009 |
| 7347074 | Drawbench of a wire A drawbench (11, 111) of a wire (13), unwinding from a reel (14) and pulled step by step by an utilizing machine (15) of drawn wire, said drawbench (11, 111) having an unusually high productivity and comprising a drawing die (17... | 03/25/2008 |
| 7251977 | Temper rolling machine of a metal band The invention relates to a method and a machine for temper rolling a metal band including at least two temper rolling units E, E′ each carrying an active cylinder (2) and a set (7, 70) of back-up members mounted rotatably on a transversal chassis ( | 08/07/2007 |
| 7192551 | Inductive heating process control of continuous cast metallic sheets An apparatus for rolling of a powder metallurgical metallic workpiece is provided having a feeding device, a first induction heating apparatus in operable communication with a first RF generator and at least a first hot rolling mill. A process control device monitor... | 03/20/2007 |
| 7185523 | Rolling process and rolling system for rolling metal strip A metal strip rolling system (18), having a first reeling device (21) for reeling-off strip (18), a rolling stand (12) having at least two working rolls (13, 14) between which there is formed a roll gap (17) whose width is c... | 03/06/2007 |
| 7159431 | Method of operating a section straightening machine A section straightening machine is operated by a method which involves passing the structural sections through the array of straightening tools. Section straightening forces are applied to adjustable shafts carrying the tools and adjusters at the service sides of th... | 01/09/2007 |
| 7073363 | Method for processing drawn material and drawn material production installation In order to increase safety with regard to methods for processing drawn materials, the invention proposes a method for processing drawn materials, especially rod- and tube-shaped metal drawn materials in which the drawn material is drawn through drawing dies using a... | 07/11/2006 |
| 7055354 | Method for adjusting a flattener under traction and corresponding device The invention concerns a method for adjusting a flattener under traction and a corresponding device, for providing a metal strip (5) in particular a cold-rolled steel plate, comprising a cage (1), cage posts (8), two stacked cassettes (2, 3 | 06/06/2006 |
| 7013693 | Method of and apparatus for the continuous stretch leveling of metallic strip A tension leveling system for thin metal strip has between a brake roll set and a tension roll set, additional two-roll bridles in which one or more inlet stretch leveling regions are followed by an elastic deformation region and the latter is followed by one or mor... | 03/21/2006 |
| 6994819 | Method to locally reround plastic pipe An apparatus for rerounding plastic pipe includes a housing having a pipe passage extending therethrough. The housing has a moveable outer frame top positionable between an open position and a closed position to enclose a pipe to be rerounded. A pair of opposing jaw... | 02/07/2006 |
| 6925845 | Method and device for tension leveling a cold-rolled strip and regulating the degree of leveling The invention relates to a method for tension levelling a cold-rolled strip, whereby the strip passes through a series of break rolls and a series of traction rolls and in the course of its extension is subjected to traction between the two series of rolls. The stri... | 08/09/2005 |
| 6920774 | Drive system for multi-roll leveler A drive system for a multi-roll leveler. The drive system is coupled to a set of upper work rolls of the leveler. Preferably, the lower, and not the upper set of work rolls provide the bending necessary to flatten the strip of material. The drive system employs a ge... | 07/26/2005 |
| 6910830 | Method for pipelaying from a coil to the sea bed, controlling thermal expansion A method for laying a pipeline on the sea bed from a lay barge in order to achieve controlled thermal expansion, comprises the following steps: Feeding out of the pipeline having a radius of initial residual curvature from a pipeline reel, preferably via a stinger t... | 06/28/2005 |
| 6840076 | Strip treating line for leveling metal strip A strip treatment line in which downstream of the processing roll stand for stainless steel strip, first and second tension rolls are provided to directly form a prestretching zone A for elastic or elastoplastic stretching of the strip following the dressing mill st... | 01/11/2005 |
| 6755066 | Bending device for bending plastically deformable strip material A bending device for bending plastically deformable strip material. The reverse bending that is required for workpieces with narrow processing tolerances in particular takes place independently of the actual bending. This increases the processing precision of the wo... | 06/29/2004 |
| 6732561 | Method and apparatus for leveling and conditioning sheet metal A method of processing sheet metal comprises the steps of: providing a tension-leveling apparatus; providing a surface conditioning apparatus; leveling a portion of the sheet metal with the tension-leveling apparatus; and conditioning a surface of the portion of the... | 05/11/2004 |
| 6615634 | Plate width adjusting apparatus and plate width adjusting method A plate width adjusting apparatus 1 for adjusting a strip 53 for a predetermined plate width, which is installed on a production line for the strip 53, is provided with bridle rolls 2 and 3. The bridle rolls 2 and 3 give tension in the transfer direction ... | 09/09/2003 |
| 6449999 | Device for feeding the front end of a wire coil into a drawing installation The aim of the invention is to reduce the amount of space and the technical effort required to feed the front end of a wire coil into a wire drawing installation. To achieve this, the arm of the device is formed from a base section and an end section, whe... | 09/17/2002 |
| 6439022 | Rolling apparatus A rolling apparatus is disclosed which forms a thin walled portion on part of a steel strip by allowing the steel strip to intervene between a pair of upper and lower rolling rolls, in which the upper rolling roll is vertically movable. The steel strip wh... | 08/27/2002 |
| 6327883 | Method of flattening metal strip Strip tension in metal strip subjected to a plastic deformation such as skin or dressing rolling, stretch bend leveling or stretching is adjusted by local variation of the temperature to establish a temperature profile which minimizes waviness and camber ... | 12/11/2001 |
| 6240762 | Method of leveling strips and leveling equipment of strips A leveling technique that produces a high degree of flatness of strips and gives strips a characteristic such that parts cut from the strips by etching do not warp. Also, a method of leveling strips including the steps of rectifying a trip by tensioning a... | 06/05/2001 |
| 6205830 | Method and apparatus for processing sheet metal A sheet metal processing apparatus comprises a stretcher-leveler and a surface conditioner in combination. The stretcher leveler has an input end, an output end, and a stretching mechanism between the input and output ends. The input end of the stretcher-... | 03/27/2001 |
| 6128937 | Method and installation for shaping metal strip in a hot strip rolling mill A method and an installation for shaping metal strip in a hot strip rolling mill which includes a finishing train, a cooling line, a pinch roll unit, and a coiling unit, wherein, after emerging from a cooling line, the strip material is alternatingly cond... | 10/10/2000 |
| 6067834 | Method for stamping bowed piece-parts A method of forming finished piece-parts having a slight but variably adjusted three-dimensional bow from a continuous web. The method comprises the steps of advancing the web axially of its length by bowing the web in the same direction of desired bowing... | 05/30/2000 |
| 5927118 | Method for making hot-rolled steel sheet and apparatus therefor Making method of hot-rolled steel sheet comprises rough rolling a slab into a rough bar, heating the rough bar, guiding the rough bar with side guides and finish rolling the rough bar. The apparatus comprises a rough rolling mill, a heating device for hea... | 07/27/1999 |
| 5906128 | Drawing assembly for bending machines Drawing assembly for bending machines used for metal shapes, in particular round pieces (11) for reinforcement purposes or metallic wire, the drawing assembly comprising at least a drawing device placed upstream of the shears (13) and the bending unit (14... | 05/25/1999 |
| 5829286 | Method for continuously leveling strip by measuring nonplanarity of the strip The stretch leveling or stretch-bend leveling of aluminum or stainless steel strip of a thickness of 0.1 to 0.5 mm is carried out following a measurement of strip nonplanarity or strip profile by regulating the stretch in the stretch leveler or the contou... | 11/03/1998 |
| 5829287 | Method for continuously leveling thin metal The stretch leveling or stretch-bend leveling of aluminum or stainless steel strip of a thickness of 0.1 to 0.5 mm is carried out following a measurement of strip nonplanarity or strip profile by regulating the stretch in the stretch leveler or the contou... | 11/03/1998 |
| 5802901 | Process for correcting the distortion of electrolytic seed plates Bent or twisted electrolytic seed plates are caused to undergo primary straightening by a total of at least 15 vertically staggered work rolls having a diameter not exceeding 50 mm. Then, ribs are formed on the seed plates by groove-forming rolls having a... | 09/08/1998 |
| 5724845 | Bowing correction apparatus for temper rolling mill A bowing correction apparatus for a temper rolling mill corrects vertical bowing of a cold-rolled steel sheet. The bowing correction apparatus includes at least a first bowing correction auxiliary roll, first deflector roll, second deflector roll and seco... | 03/10/1998 |
| 5704237 | Apparatus for continuously leveling thin metal strip The stretch leveling or stretch-bend leveling of aluminum or stainless steel strip of a thickness of 0.1 to 0.5 mm is carried out following a measurement of strip nonplanarity or strip profile by regulating the stretch in the stretch leveler or the contou... | 01/06/1998 |
| 5687595 | Method of and apparatus for correcting curvature of rolled metal strip Downstream of an uncoiler, a stretch-bend leveler is provided in a strip line to correct curvature in the strip plane. One or more rollers of the stretch-bend leveler are swingable about a horizontal or vertical axis at the end of the roller in response t... | 11/18/1997 |
| 5676009 | Pipe straightener and rerounder device A portable device for straightening and rerounding plastic pipe with a straightening unit having three rollers, one of which is adjustable toward and away from the other two for reverse bending plastic pipe passing therebetween and with a rerounding unit ... | 10/14/1997 |
| 5632175 | Rebar fabricating apparatus A rebar fabricating machine is provided that is capable of processing either straight rod stock material or coil stock material. The rebar fabricating machine comprises a main cabinet, a horizontal power driven straightening module mounted adjacent to the... | 05/27/1997 |
| 5592845 | Process for producing bar flats This invention relates to a novel method and apparatus for producing cold finished bar flats with improved bright surface condition. The bar flats are produced by a rolled method in a continuous economical process. A strip is fed to a shaving apparatus fo... | 01/14/1997 |
| 5579658 | Method of and apparatus for producing large metal plates Method and apparatus for producing large-area metal, especially steel, plates. The metal strip unwound from a coil is continuously treated by a heat treatment followed by stretch-bend leveling and then stretcher-leveling, the latter being discontinuously ... | 12/03/1996 |
| 5456098 | Process and apparatus for controlling the loading of a processing machine with band-like material For loading a processing machine with band-like material from a coil, a rotatable support, on which the coil rests with its axis substantially vertical, is driven by a motor. Since the circumference of the coil decreases during unwinding, a sensor is prov... | 10/10/1995 |
| 5400631 | Method to obtain on the cold state single finished section from cold single multi-section elements, and relative machine Method to obtain in the cold state single finished sections (11) from substantially cold single multi-section elements (12) produced by hot rolling, extrusion or drawing, the single multi-section element (12) consisting of at least two finished sections (... | 03/28/1995 |
| 5341664 | Roll set for thin metal strip The bridle or bridles of a stretching or levelling line for a thin metal strip, e.g. of a thickness of up to 1 mm, can have at least one roll of a periphery variable between an outwardly convex and an inwardly concave bulge to compensate for dishing of th... | 08/30/1994 |
