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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 |
| 8028587 | Method and apparatus for testing shafts Methods and apparatus are provided for testing shafts, such as golf club shafts. In one embodiment, the invention can be characterized as a shaft tester comprising: a frame; a first shaft support supporting a first portion of a shaft at a first fixed position; a sec... | 10/04/2011 |
| 7926358 | Method for testing fatigue of a lead A method and apparatus for testing the fatigue of an implantable lead by simultaneously bending and un-bending it at a plurality of successive positions wherein the bending and un-bending positions comprise a substantial length of the lead and wherein the bending ra... | 04/19/2011 |
| 7788982 | Method and apparatus for testing shafts Methods and apparatus are provided for testing shafts, such as golf club shafts. In one embodiment, the invention can be characterized as a shaft tester comprising: a frame; a first shaft support supporting a first portion of a shaft at a first fixed position; a sec... | 09/07/2010 |
| 7690265 | Constant moment testing device for elongated members A testing device applies a load controlled bending moment which is constant along a length of an elongated member. The testing device also includes a drive system which rotates the elongated member while the bending load is applied to rapidly find defects which may ... | 04/06/2010 |
| 7543507 | Failure analysis system for printed circuit board and method using the same A failure analysis system (900) for printed circuit board (600) includes testing equipment (100) and a monitor (200). The testing equipment includes a base (120), a fixing body (180), a supporting arm (140) and a micr... | 06/09/2009 |
| 7360441 | Board deflection metrology using photoelectric amplifiers Manufacturers test printed circuit boards (PCB) to ensure that all components have been soldered to the correctly. Some tests cause the boards to deflect, which can damage component-to-board interfaces (i.e., solder joints) or components. Embodiments of the present ... | 04/22/2008 |
| 7261000 | Methods of assessing characteristics of fibrous substrates and treating fibrous substrates A method of assessing damage of a fibrous substrate comprises the steps of: (a) providing said fibrous substrate having a length, a root end, and a tip end; (b) providing a means for assessing substrate moisture content; (c) using said means for assessing substrate ... | 08/28/2007 |
| 7225681 | Statistical method for identifying microcracks in insulators One embodiment of the invention is a method for evaluating a material such as low-k dielectric, by a stress-generating test tool such as a needle. The evaluation object is shaped as a stack of adhering layers: low-k dielectric, first metal (preferably copper), barri... | 06/05/2007 |
| 7226652 | Large-size OSB panel having improved properties, especially for the construction industry The invention relates to a large-size OSB-board having improved technical and mechanical properties. The aim of the invention is to solve the technical problems posed by an OSB-board which is suitable for using on large surfaces and also, for example, for the constr... | 06/05/2007 |
| 7201064 | Panel bending machine A panel testing device, and a method of its use, for flexing and measuring mechanical properties of a panel are provided comprising a panel bending assembly operable to engage a panel and impart a bending force on the engaged panel, and a linear actuator having an o... | 04/10/2007 |
| 7194916 | Apparatus and method for testing stiffness of articles An apparatus for testing stiffness characteristics such as modulus of elasticity E of an article such as a piece of lumber moving in a conveying direction transverse to the testing axis, comprises a bearing unit capable of contacting the piece of lumber at two space... | 03/27/2007 |
| 7089802 | Method and apparatus for determining hydrogen embrittlement A method and apparatus for determining failure of a test component. The apparatus, according to a selected method, is able to determine the embrittlement potential of a selected procedure for a selected material. The apparatus is able to determine the embrittlement ... | 08/15/2006 |
| 7080561 | Visual documentation of micro-cracks during tensile coupon testing A test method for visual documentation of micro-cracks during tensile coupon testing includes the steps of: assembling a test unit; inserting a carbon-reinforced composite specimen having a prepared edge into the tensile coupon testing machine; illuminating the prep... | 07/25/2006 |
| 6962279 | Apparatus and method for glass separation for flat panel displays A method and apparatus for separating glass panels that minimizes process failures and improves separation process consistency by utilizing a separation handle which applies the minimal pressure necessary to remove the edge portion from the glass panel. The glass pa... | 11/08/2005 |
| 6931942 | Panel bending and testing device A panel testing device includes a frame, a first roller assembly pivotally mounted to the frame including a first roller and a second roller spaced apart from and substantially parallel to the first roller. The panel testing device also includes a second roller asse... | 08/23/2005 |
| 6904389 | Remote computer testing A product under test is tested remotely. A network accessible site receives input for the product under test from a remote user connected to a network accessible site. The input for the product under test is forwarded to a process that presents the input to the prod... | 06/07/2005 |
| 6684167 | Method and apparatus for measuring energy consumed during plastic deformation in multi-ply board systems A method and an apparatus for predicting a score-line cracking propensity of a multi-ply substrate. The method includes the steps of: bending the multi-ply substrate; acquiring tensile load data from the multi-ply substrate during bending; and computing a... | 01/27/2004 |
| 6591692 | Bend-test device for wire harnesses A bend-test device for wire harnesses capable of handling a plurality of samples at the same time. The bend-test device includes a fixed frame unit, a hinge unit with a fulcrum axis, and a mobile frame unit connected to the fixed frame unit via the hinge ... | 07/15/2003 |
| 6557421 | Mandrel supported tensile test to evaluate weld bonding A tensile test apparatus and method for testing a circumferential weld on a tubular member wherein the tube region of the weld is completely supported by a mandrel and the tubular specimen is gripped on both sides of the weld along the specimen's longitud... | 05/06/2003 |
| 6553320 | Method for testing the stability of vertically braced masts A method for testing the stability of vertically braced masts wherein the relevant mast is subjected to the load of a bending force starting from a defined initial value, and increasing to a maximum pre-set testing force above its bracing, the mast thereb... | 04/22/2003 |
| 6422091 | Apparatus for testing the life expectancy of a straw An apparatus for testing the life expectancy of a straw having a test straw holder, an upper jaw, a lower jaw, and a frame. One end of the test straw is connected to the test straw holder and the other end is disposed between an upper jaw and a lower jaw.... | 07/23/2002 |
| 6350533 | Welded sheet metal component A sheet metal component, obtained by press-forming a one-piece metal sheet comprised of two metal sheets into a desired shape, has an expanding portion having an external appearance varying in dependence on a weld state of a weld portion of the one-piece ... | 02/26/2002 |
| 6142022 | Process and device for wear testing on a pressing clamp A test body is compressed a reference measure in the wear test on compression pincers. The test body is compressed preferably between two compression jaws. The test body is a bolt which is compressed to become flat, with at least one volumetric measure, p... | 11/07/2000 |
| 6053052 | Panel performance test system The invention is a performance testing system for wood-based panels. The testing includes performance of a material under a load concentrated in a single area, performance of edge support systems under a concentrated load and performance of a material und... | 04/25/2000 |
| 6041661 | Method and apparatus of testing board product This invention relates to a method and apparatus for obtaining data relating to the compressive failure characteristics of a liner of a board sample which includes the following. A sample is aligned within a pivotal retaining mechanism of a testing device... | 03/28/2000 |
| 6038931 | Method and apparatus for the testing of plastically deformable objects A method for testing the integrity at least two test objects, each object is made of a plastically deformable material, by a. contacting a moving means with the objects at a first point in time, the moving means at a first position and the objects at a fi... | 03/21/2000 |
| 5962778 | Device for monitoring stresses undergone by a tire A tire which, during use is subjected to one or more severe stresses lead to an appreciable reduction of its potential lifetime of use under nominal conditions. In order to be able to determine whether a tire has undergone such severe conditions, the tir... | 10/05/1999 |
| 5902936 | Compression test device for paper strips The present invention relates to a compression test device for a paper strip, including means for laterally holding the strip to limit its buckling during the testing. The lateral holding means include a tube in which the strip is freely rolled with more ... | 05/11/1999 |
| 5616848 | Plate testing apparatus and method of testing An apparatus for evaluating the ultimate strength of a plate of material includes a fixture for holding the plate and a loading element for applying a load to the plate, The fixture has a support element for supporting the plate at first and second points... | 04/01/1997 |
| 5585570 | Rising step-load test apparatus A rising step-load test apparatus for subjecting the notched region of a fracture specimen to tension by applying four-point bending to the specimen, and having an adaptor that can fit into the test apparatus in four-point bending and convert the bending ... | 12/17/1996 |
| 5505095 | Rising step-load test apparatus A rising step-load test apparatus for subjecting the notched region of a fracture specimen to tension by applying four-point bending to the specimen, and having an adaptor that can fit into the test apparatus in four-point bending and convert the bending ... | 04/09/1996 |
| 5199305 | Method and apparatus for measuring the strain developed in a coated surface A method and apparatus are provided for determining the strain developed in a coated surface. A beam with a coating on a surface thereof is mounted as a cantilever and a force is applied to the free end of the beam to cause deflection of the beam until th... | 04/06/1993 |
| 5184517 | Printed circuit board test fixture and method There is disclosed a printed circuit board text fixture and method for testing printed circuit boards. The test fixture and test method is designed to establish statistical information concerning the breaking force for and deflection of a printed circuit ... | 02/09/1993 |
| 5165287 | Determining fracture mode transition behavior of solid materials using miniature specimens A method of determining fracture mode transition behavior (FMTB) of solid materials by using stress field modified miniature specimens. The method is an improvement in the method of determining mechanical behavior information from specimens only so large ... | 11/24/1992 |
| 5080732 | Method for determining the relative HAZ toughness of steel A method for determining the relative HAZ toughness of steel. The method comprises determining at least two thermal cycles of the steel for at least one weld heat input value and then simulating the HAZ that would result if the steel were actually welded ... | 01/14/1992 |
| 4941359 | Articulating flexure test fixture An articulating fixture for the flexure testing of ceramics, having a lower structure for supporting the bottom of a specimen to be tested and an upper structure for placing a load into the top surface of the specimen. Each such structure includes at leas... | 07/17/1990 |
| 4901582 | Fixture for brittle pre-crack introduction in ceramic specimen A fixture capable of a brittle pre-crack introduction of prescribed shape and size in a ceramic specimen with high reproducibility comprises an anvil provided on the upper side thereof with a central groove perpendicularly intersecting a specimen to be mo... | 02/20/1990 |
| 4864867 | Determining fracture mode transition behavior of solid materials using miniature specimens A method of determining fracture mode transition behavior (FMTB) of solid materials by using stress field modified miniature specimens. The method is an improvement in the method of determining mechanical behavior information from specimens only so large ... | 09/12/1989 |
| 4763529 | In-situ beta alumina stress simulator Method and apparatus for static fatigue testing of ceramic material is described wherein a thin plate of ceramic material is supported at opposite ends thereof in a liquid sodium bath inside an enclosure containing a gaseous atmosphere inert to reaction w... | 08/16/1988 |
| 4461168 | Hydrogen embrittlement tester A hydrogen embrittlement tester, for a metal sample, has a vise device for holding the sample. For testing bend fracture, the distance between both ends of the sample is measured, which corresponds to that of the distance between the sample holding member... | 07/24/1984 |
