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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 |
| 7441994 | Machine tool having a C-shaped frame A machine tool includes a machine frame, a worktable, and a spindle unit. The worktable is movable on the machine frame along a first horizontal direction, a second horizontal direction perpendicular to the first horizontal direction, and a vertical direction. The s... | 10/28/2008 |
| 7281608 | Loading/unloading device for shelving The invention relates to a rack serving device (1) with a load-bearing means (4) displaceable in the height direction of a mast (2), the mast (2) being guided by means of bogie assemblies (7, 8) on bottom and top guide tracks and m... | 10/16/2007 |
| 7273333 | Methods and apparatus for counterbalance-assisted manufacturing operations Methods and apparatus for counterbalanced manufacturing operations are disclosed. In one embodiment, an apparatus for supporting a tool relative to a surface of a workpiece includes a base adapted to be attached to the workpiece, a tool support coupled to the base, ... | 09/25/2007 |
| 7237991 | Machine tool The present invention provides a machine tool capable of reducing residual vibration occurring at the location time, thereby achieving responsiveness to a recent demand for higher acceleration/deceleration speed. The machine tool is configured such that a column ... | 07/03/2007 |
| 7201548 | Weight-compensating device The present invention relates to a weight compensating device comprising a carrier and a component which is supported on the carrier and is displaceable particularly in vertical direction by means of a drive, characterized in that the carrier and the component have ... | 04/10/2007 |
| 7147595 | CNC machine tool A CNC machine tool includes a worktable supporting two workpieces and rotatable on a base so as to exchange the positions of the workpieces. A post member is fixed on the base. A first horizontal rail unit is movable vertically on the post member. A second horizonta... | 12/12/2006 |
| 7097399 | Cutting machine for gear shaping or the like A cutting machine includes linear electrical actuation for controlling linear reciprocating movement of a spindle and cutting tool. The cutting machine is suited for gear shaping cutting operations and the like. Linear electrical actuation may be used to control pos... | 08/29/2006 |
| 6932549 | Mandrel-holding slide or sleeve pod for numerical-control machine tools In a numerical-control machine tool use is made of a mandrel-holding structure that makes it possible for the machine tool to be used to smoothing/facing and polishing purposes under utilization of traditional pan-like tools, in which the force acting on the working... | 08/23/2005 |
| 6916141 | Three dimensional tool guide A three dimensional tool guide includes first, second and third elongate guide arms mounted orthogonally and in series so as to provide X, Y and Z axes for the guide. The arms are interconnected by carriage means allowing free relative movement between adjacent arms... | 07/12/2005 |
| 6908266 | Apparatus for forming a microlens array mold An apparatus for making microlens molds and microlens array molds is described which utilizes a forming element having a rotating half radius diamond cutting member. A substrate is alignably arranged with the diamond cutting member so that the cutting member can mil... | 06/21/2005 |
| 6902362 | Machine tool In an automatic machine tool (1) comprising a spindle mounting slide (4) which is driven by a linear electric motor (9) in a vertical direction (V) in a slideway (8), the slide (4) is equipped with a counterweight device (13... | 06/07/2005 |
| 6865788 | Numerical-control milling machine A numerical-control milling machine having a supporting frame; a worktable fitted to the supporting frame so as to oscillate about a substantially horizontal first axis of rotation, and in turn having two rotary platforms, each for accommodating a workpiece; and two... | 03/15/2005 |
| 6835033 | Parallel kinematic structure for a machine tool A device for using a parallel structure designed for positioning and displacing a mobile member including at least a fixed element and at least three actuators each including a fixed part and a mobile part, the mobile member including a support-sheath of a tool spin... | 12/28/2004 |
| 6612792 | Work table having tool counterbalancing means The present invention provides a work table for use with a tool, comprising an inclined work surface, which is substantially planar and is supported by a frame having a base; a gantry movably attached to the work surface and having two ends, a longitudina... | 09/02/2003 |
| 6540459 | Apparatus for counterbalancing weight The invention relates to an apparatus for counterbalancing the weight of movable machine parts of a machine tool. A simply and compactly designed apparatus of this kind enabling a weight compensation even without complex pressure supplies is, according to... | 04/01/2003 |
| 6474915 | Compensating system for a hexapod A hexapod, for example, a hexapod used to position a tool with respect to a part to be machined, includes two spaced plates interconnected by six articulated and extensible legs. The two plates, including a base plate and a mobile plate, and the six legs ... | 11/05/2002 |
| 6439813 | High-speed production unit for machining operations A machine tool includes a spindle-headstock structure with a horizontal axis which is displaceable along three mutually orthogonal axes. The headstock structure is mounted so that it slides along an axis Z parallel to the axis of the spindle on a slide. T... | 08/27/2002 |
| 6435784 | Method and device for the surface machining of a structure such as a cellular structure In order to make notches in partitions separating substantially aligned recesses issuing onto the surface of a structure (10), use is made of a machining head (26) having a cutting tool (28) and at least one rotary member (52) adjacent to said tool. The r... | 08/20/2002 |
| 6334745 | Apparatus and method for working double sided workpiece An apparatus for working on both sides of a flat workpiece includes a first support surface having a first axial line thereacross, a second support surface juxtaposed to and associated with the first support surface and having a second axial line thereacr... | 01/01/2002 |
| 6145178 | Milling machine with horizontal and vertical spindles A machine tool comprises a base with an upstanding column, a vertical spindle axis tool driving unit symmetrically located and vertically movable on the front of the column, a frontwards oriented horizontal spindle axis tool driving unit symmetrically loc... | 11/14/2000 |
| 5988959 | Spindle supporting box structure, a damping structure, a gas supply related device, and a balance cylinder gas actuated device for machine tools A spindle supporting box structure, wherein longitudinal parts forming both ends of lateral parts at each of right and left longitudinal side faces facing, with a spindle therebetween, in a direction almost perpendicular to longitudinal side faces facing ... | 11/23/1999 |
| 5873685 | Press processing method and press processing device The disclosed press processing method and device can chamfer work, for instance by pressing a chamfering tool against the work at a predetermined contact pressure, without detecting the pressing force of the chamfering tool against the work or without fee... | 02/23/1999 |
| 5569004 | Machine tool positioning arrangement A machine tool is provided in which a carriage is supported on the upper flat surface of a work table by first bearings. The carriage extends beyond the bearings in one direction to support a tool, so that the weight of the carriage and tool creates a mom... | 10/29/1996 |
| 5090279 | Vertical spindle pedestal A vertical spindle pedestal, especially for attachment to a lathe, which vertical spindle pedestal includes a vertical column and a motor driven vertical spindle vertically adjustable relative to the column, the vertical column being a hollow one on which... | 02/25/1992 |
| 4923345 | Device for adjusting the position of a tool-hoder head along an axis and process employing it A device and process for adjusting the position of a tool-holder head along an axis with the tool-head moving along a guiding element and with a pulley mounted to rotate freely on a shaft secured to the tool-holder head and which is moveable along a taut ... | 05/08/1990 |
| 4787786 | Laminate cutting device The present invention relates to a cutting device suitable for cutting one part of a laminate to conform its shape to the other part of the laminate. The device comprises a vertical motion means mounted on a horizontal motion means, the vertical motion me... | 11/29/1988 |
| 4447178 | Horizontal drilling and milling machine with a headstock moving up and down in guides A horizontal drilling and milling machine comprises a vertically movable headstock and a spindle sleeve mounted for horizontal run-out from the headstock. Typically, an outer end of the spindle sleeve undergoes a vertical deflection relative to the headst... | 05/08/1984 |
| 4444534 | Vertical and horizontal machine tools A machine tool apparatus having a bifurcated column structure comprising spaced apart columns which enclose and slidably secure the mounting end of an arm, the opposite end of which receives a rotating spindle adapted to engage and rotate a variety of mac... | 04/24/1984 |
| 4149822 | Headstock balancing arrangement for machine tools This invention relates to a machine tool having an upright column movably supported on a bed with a saddle movable along the guide surface of the column, supported on the bed of the machine tool and a headstock with a balancing arrangement, comprising a b... | 04/17/1979 |
| 4091712 | Spindlehead with spindle driving motor A spindlehead arrangement having a headstock and a driving spindle motor mounted separately of each other for vertical movement on separate tracks. The headstock is capable of being removed from its set of supporting tracks without necessitating a removal... | 05/30/1978 |
| 4048902 | Balancing and compensating arrangement This invention relates to an arrangement for balancing and compensating for the overhang effect caused by longitudinal movement of a movable part of a machine along a supporting table, in which the said movable part is suspended at a point situated substa... | 09/20/1977 |
| 3988965 | Two pressure counterbalance system for machine tool headstocks A counterbalance mechanism for a vertically movable machine tool headstock in which the net counterbalance force applied to the headstock is the same for both upward and downward movement of the headstock so that the accuracy of the spindle alignment is n... | 11/02/1976 |
