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| Number | Title | Issue Date |
| 7269987 | Method of manufacturing connecting devices The invention relates to a method of manufacturing a connecting device having common axial core material and a plurality of helical fins, flanges or ridges that extend outwards from the core. The method uses an elongate preform member, and comprises forcing the pref... | 09/18/2007 |
| 7219855 | Rising and moving apparatus and manufacturing method thereof A fluid-structure interactive analysis is performed while n types of wing structure models are caused to flap in accordance with a prescribed model of flapping manner. Based on an analysis, data 1, data 2, . . . data n of physical values related to flu... | 05/22/2007 |
| 7132910 | Waveguide adaptor assembly and method A flange adaptor assembly for coupling a waveguide to any number of flange interfaces, wherein the assembly includes a flange adaptor having a predetermined flange coupling interface. The flange adaptor of the present invention is constructed for engaging the common... | 11/07/2006 |
| 7111483 | Method and apparatus for fabricating helically shaped ribbons of material Apparatus and methods are utilized to form turbulators. The apparatus includes a first mechanism for accepting a ribbon of material along an axis, a second mechanism for rotating an end of the ribbon of material, and a third mechanism for moving the second mechanism... | 09/26/2006 |
| 7096705 | Shear-extrusion method A shear-extrusion method of severe plastic deformation for fabrication of metal shapes with ultra-fine structures is described. The improvements of the method include unidirectional shear of any required intensity during one step processing and under high hydrostati... | 08/29/2006 |
| 7069757 | Twisting apparatus for ultrafine rectangular bar The present invention relates to a twisting apparatus for an ultrafine rectangular bar, comprising: a chuck; chuck driving means; at least two vise clamps each of the vise clamps having a pressing surface capable of contacting to a side surface of the ultrafine rect... | 07/04/2006 |
| 6804980 | Metal stock bender twister adaptor Adaptor and twister apparatus, which adapts an existing bender apparatus to also twist vertically oriented metal stock, is provided. Removing the alternate function's parts avoids interaction between them. The twister has an adjustable clamp which grips the supporti... | 10/19/2004 |
| 5634363 | Method of mechanical descaling and mechanical descaling equipment In a bending type mechanical descaling method, streak-like scales remain, which cause a die seizure in the subsequent drawing process. In the present invention, there is provided a quite new mechanical descaling technique capable of eliminating such strea... | 06/03/1997 |
| 5183442 | Double helix, method of making same and spiral link belt made therefrom A double helix is formed from two partial helices each having the same winding direction and each having an oval cross-section with nearly straight upper and lower winding legs. The facing winding arcs of the two partial helices encircle each other. The u... | 02/02/1993 |
| 5107694 | Twisting apparatus Apparatus for twisting a strip of flat material into a helix or other suitable shape comprising one or more feed rollers adapted to feed the strip in to means for guiding and locating the strip in the plane of its longitudinal axis, and from whence the st... | 04/28/1992 |
| 4770016 | Method of wire straightening and a wire straightening machine for carrying out the method A wire straightening method involves feeding a wire from a reel to a wire twisting and stretching mechanism, where by wire straightening elements having working surfaces in each pair of such mechanisms arranged in opposition to each other, the wire is twi... | 09/13/1988 |
| 4766751 | Apparatus for continuously producing tube having helical grooves in its inner surface An apparatus for continuously producing a tube having helical grooves in its surface comprises a first drum, a flier having an axis intersecting the axis of the first drum at right angles therewith and rotatable around the first drum, and a second drum. O... | 08/30/1988 |
| 4604884 | Twisting apparatus of root canal reamer or file material and method for manufacturing root canal reamer or file An apparatus for the manufacture of a root canal reamer and a method of manufacture of the same. An apparatus for twisting reamer material has a triangular or rectangular cross-sectional opening, a chuck portion holding root part of taper-like reamer mate... | 08/12/1986 |
| 4601187 | Twisting apparatus and method Apparatus and method for twisting thin strip material such as thin aluminum strip in which the strip material is guided from a supply of strip material along a feed path 21 to a guide mechanism 11 which maintains the strip in a first plane and is then pas... | 07/22/1986 |
| 4367641 | Apparatus for bending and twisting elongated pieces A method and apparatus for bending an elongated piece, wherein the piece is fed to and held by feeding rolls and bending rolls which are spaced from each other, the piece is bent by displacing the bending rolls in directions perpendicular to the longitudi... | 01/11/1983 |
| 4300378 | Method and apparatus for forming elongated articles having reduced diameter cross-sections A method and apparatus for forming elongated articles whereby a torque is transmitted to the deforming material as it passes through a die cavity to facilitate the reduction in the cross-section thereof as it passes therethrough. In one embodiment, the ap... | 11/17/1981 |
| 4194380 | Corrugated elliptical waveguide with permanent twist A corrugated elliptical waveguide comprises a unitary, fluid-impervious, corrugated metallic tube with a substantially elliptical cross section. The corrugated tube is permanently twisted about its longitudinal axis for connecting two terminals having the... | 03/25/1980 |
| 4075880 | Machine for continuously cold working steel bar A method and apparatus for cold working steel lengths on a continuous basis so as to impart the cold working properties to the steel. The steel is twisted and immediately untwisted so as to impart torsional force into the steel. Tensile forces are also im... | 02/28/1978 |
| 3961514 | Twist drawn wire, process and apparatus for making same This invention comprehends torsional strengthening of two-phase metal materials. One application of the torsionally strengthened material is in the field of springs wherein the energy storage capacity is increased. The invention provides for methods and p... | 06/08/1976 |
| 3955390 | Twist drawn wire, process and apparatus for making same This invention comprehends torsional strengthening of two-phase metal materials. One application of the torsionally strengthened material is in the field of springs wherein the energy storage capacity is increased. The invention provides for methods and p... | 05/11/1976 |
