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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 |
| 4557244 | Method of machine cutting silicon metal particulates with Si3 N4 A method is disclosed of machine cutting a semidense silicon comprising particulate body by relatively moving a substantially fully dense silicon nitride cutting tool against the body. The silicon nitride tool experiences increased tool life over that of ... | 12/10/1985 |
| 4533286 | Tool compensation method A tool compensation method for cutting a surface on a workpiece having a slanted surface. A radius at a final point is determined by a path computing unit using coordinates of the final cutting point and a tool height. Based on these values thus determine... | 08/06/1985 |
| 4493138 | Vapor cooled electrical inductive apparatus Vapor cooled induction apparatus having a winding with predetermined surface irregularities on the turn surfaces of the winding to provide spaces to permit a cooling/insulating vaporizable liquid dielectric to flow between the turn surfaces of the winding... | 01/15/1985 |
| 4426179 | Tester for key duplicating machines A system for testing key duplicating machines to determine the accuracy thereof. This system is provided with a pair of identical detector plates each of which are intended for alignment positioning of the key and key blank within the two vises of the key... | 01/17/1984 |
| 4388027 | Process for milling long workpieces A distorted workpiece is initially held in a position in which it has a free sag near the center of its length. The distorted workpiece is subsequently supported near the center of its length so as to eliminate only the elastic deformation of the workpiec... | 06/14/1983 |
| 4383785 | Method for milling and drilling glass A process for machining glass by placing a rotating carbide working surface under minimum pressure against an area of glass to be worked and concurrently wetting the region between the working surface and the area of glass with a lubricant consisting esse... | 05/17/1983 |
| 4337566 | Gauging system for machining surfaces An arrangement for removing excess material from an object surface, to provide a desired finished surface. Holes are drilled into the object so that the bottoms of the holes lie on the desired finished surface. The holes have a shape so that the observed ... | 07/06/1982 |
| 4323325 | ethod of using Si3 N4.Y.sub.2 O3.SiO.sub.2 ceramic system for machine cast iron A process for machine cutting of cast iron with a shaped tool which is a ceramic having as constituent ingredients about 4 to about 12% by weight Y2 O3 and a balance consisting essentially of Si3 N4 and which ha... | 04/06/1982 |
| 4297061 | Steam generator shell parting method and apparatus A method and apparatus for effecting within a nuclear power plant horizontal separation of the vertically-extending cylindrical wall of the shell of a steam generator by an accurate cutting technique that generates a weld accommodating profile in preparat... | 10/27/1981 |
| 4292006 | Manufacture of ceramic ware A handle-cutting device comprises a conveyor in the form of a horizontal table arranged to be rotated step-by-step to bring handle holders in turn to a handle-cutting station where the handle is lightly clamped. While the holder is stationary at the handl... | 09/29/1981 |
| 4260304 | Method for machining an impeller cover In a method of machining an upper conical surface in an annular impeller cover, a rotatable milling cutter has its cutting surface ground to an angle approximately equal to that of the desired conical surface configuration of the cover. The milling cutter... | 04/07/1981 |
| 4248556 | Method for smoothing the surface of bar material A method and apparatus for smoothing local unevenness from the surface of bar material, such as anode bars, consisting of clamping the bar rigidly against a supporting frame and moving a smoothing device along the bar, said smoothing device maintained in ... | 02/03/1981 |
| 4227842 | Method of using Si3 N4.Y.sub.2 O3.SiO.sub.2 ceramic system for machining cast iron A process for continuous or interrupted machine cutting of solid cast iron by milling, turning or boring with a shaped tool, wherein said shaped tool is a ceramic consisting essentially of Si3 N4 and 4-12% by weight Y2 O | 10/14/1980 |
| 4221513 | Method of continuously machining supports for electromagnetic wave guides Continuous machining of grooves in a cylindrical dielectric rod is achieved by guiding the rod into a heating machining head incorporating a rotating cutter made from a chemically etched stainless steel sheet and guiding the rod downstream of said head. A... | 09/09/1980 |
| 4218164 | Apparatus and method for perforating tubing Corrugated tubing is advanced along its axial path by rotatably driven lead screw members the screw threading of which is in meshing engagement with the corrugations of the tubing, the lead screw members being in pairs with the screw threading of the memb... | 08/19/1980 |
| 4183283 | Methods of cutting patted hollow filaments Hollow filaments, which are suitable for use in separating one or more components from a fluid mixture by selective permeation, are embedded, or potted, in a solid potting mass and the potting mass is severed to expose fluid communication openings of the ... | 01/15/1980 |
| 4180357 | Apparatus and method for perforating tubing and method of producing part of such apparatus Corrugated tubing is advanced along its axial path by rotatably driven lead screw members the screw threading of which is in meshing engagement with the corrugations of the tubing, the lead screw members being in pairs with the screw threading of the memb... | 12/25/1979 |
| 4176992 | Numerically controlled milling with parabolic profile tools for surface smoothness An arrangement for machining surfaces with a numerically controlled tool in which the tool is provided with a parabolic profile to obtain a substantially smooth surface finish. The workpiece to be machined is moved relative to the cutting tool in substant... | 12/04/1979 |
| 4165402 | Chip-removing machining method and apparatus for semiconducting crystals, specifically suited for the production of force and pressure measuring cells A method and apparatus for shaping semiconducting crystals for utilization in force and pressure measuring devices by chip removing machining of at least one surface portion of the crystal member. The shaping is effected by mounting the crystal member to ... | 08/21/1979 |
| 4133361 | Method for machining joints for miters, grooves and other joinery in a beveled or straight panel edge and apparatus for same Improved method and apparatus for machining the mitered edge surface of a composite material panel uses a multibladed cutting head rotatable about an axis of rotation that intersects the surface. The cutting blades are positioned transverse to the axis of... | 01/09/1979 |
| 4008515 | Method of transporting toolholder There are disclosed herein methods for transporting a toolholder between a tool storage rack and a machine tool spindle which include the steps of, in one continuous operation, causing a tool carrier to remove a toolholder from said storage rack and trans... | 02/22/1977 |
| 3990332 | Oxygen assisted machining A method to reduce the growth rate of localized tool wear at the depth-of-cut line by the enrichment of the cutting zone atmosphere with gaseous oxygen.... | 11/09/1976 |
| 3987712 | Fixture for cutouts in drain troughs For removable attachment to a sheet metal drain trough or gutter a cutting fixture which has rigid template portion having an opening therethrough defining the size and shape of a hole to be cut through the bottom of the gutter. Pivotable brackets extendi... | 10/26/1976 |
| 3975866 | Method and apparatus for machining housings for slant axis rotary mechanisms Method and apparatus for machining an end surface for a housing for a slant axis rotary mechanism having a slant angle of .crclbar. and a rotor to shaft to housing timing ratio of SR /SS SH. The method includes the steps o... | 08/24/1976 |
| 3964367 | Device for machining trochoidal inner walls, especially for the cylinders of Wankel engines A machine for machining the inner walls of the cylinder of a Wankel engine in which a support is provided for the cylinder to be machined which rotates the cylinder about a first axis in one direction with the first axis moving bodily about a second axis ... | 06/22/1976 |
| 3954043 | Method and apparatus for clamping and milling work in a lathe A method and apparatus for use on an automatic multispindle lathe of the type wherein the spindles are indexed into various positions about a central axis, the present method and apparatus including stopping rotation of the spindle and work piece in one o... | 05/04/1976 |
