| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 072146000 | To form spiral coil | 11 |
| 20090158800 | COIL FORMING METHOD, COIL FORMING DIE ASSEMBLY AND COIL MANUFACTURED THEREBY - A coil forming method, a coil forming die assembly and a coil manufactured by the coil forming method are disclosed. The coil forming method comprises conducting preliminary forming work on a coil under a linear state before conducting bending work on the coil. The preliminary forming work including conducting compression work on the coil under the linear state to compress the coil in a region covering a rounded corner portion formed when bending work is conducted to decrease a dimension of the coil in a widthwise direction. The dimension of the coil is decreased in the widthwise direction by the nearly same dimension as that of the coil bulged in the widthwise direction when bending work is conducted in the absence of the preliminary forming work. This prevents the occurrence of bulging of the coil during bending work with an increase in lamination factor. | 06-25-2009 |
| 20100050725 | APPARATUS FOR MANUFACTURING COIL SPRING - An apparatus for manufacturing a coil spring. In the apparatus, a body is provided and a pair of machining units are disposed on the body to oppose each other at one end thereof. In each of the machining units, a mandrel is disposed in an upper central part of the body. The mandrel is rotatably configured to wind a coil spring material around an outer circumference thereof. A first motor is disposed at the other end of the machining unit to provide a driving force for rotating the mandrel. Also, a guide roller part is disposed movable along a length direction of the mandrel to guide the coil spring material to be wound around the mandrel. Two coil spring materials produced from a furnace are wound around the mandrels, respectively to produce two coil springs through one process. | 03-04-2010 |
| 20100236312 | COILER MANDREL - The invention relates to a reel mandrel ( | 09-23-2010 |
| 20110048092 | APPARATUS FOR PRODUCING MOTOR COIL - An apparatus for producing a motor coil is to produce a coil to be used for a stator of a motor by automatically winding a flat rectangular conductive wire by use of a winding machine. This apparatus comprises: an uncoiler for feeding the conductive wire wound and accumulated on a bobbin to the winding machine; an inertia measuring device for measuring inertia of the uncoiler when feeding the conductive wire; chucks and for measuring a resistance value of the conductive wire; and an operating console for setting the winding condition of the rectangular wire to be wound by the winding machine based on the measured inertia and the measured resistance value. The operating console controls the winding machine based on the set winding condition to wind the conductive wire. | 03-03-2011 |
| 20110174038 | METHOD AND APPARATUS FOR ROLLING ELECTRIC WIRE FOR STATOR COIL OF ELECTRIC ROTATING MACHINE - Disclosed is an apparatus for rolling a substantially planar electric wire by more than one turn into a spiral shape. The apparatus includes an inner pressing member having an outer surface, an intermediate pressing member having radially inner and outer surfaces, and an outer pressing member having an inner surface. The inner and intermediate pressing members together press a first part of the electric wire between the outer surface of the inner pressing member and the inner surface of the intermediate pressing member, thereby plastically deforming the first part to extend along the outer surface of the inner pressing member. The intermediate and outer pressing members together press a second part of the electric wire between the outer surface of the intermediate pressing member and the inner surface of the outer pressing member, thereby plastically deforming the second part to extend along the outer surface of the intermediate pressing member. | 07-21-2011 |
| 20110174039 | METHOD AND INSTALLATION FOR CONSTRUCTING A LAYER OF AMOUR STRIPS - A method and an installation for constructing a layer ( | 07-21-2011 |
| 20120103046 | FORMING HEAD FOR FORMING SPIRALLY SEAMED TUBE - The invention relates to a forming head ( | 05-03-2012 |
| 20120167652 | LINEAR-SPRING FORMING APPARATUS - An inventive linear-spring forming apparatus has: a rotatable table ( | 07-05-2012 |
| 20130086962 | PIPE BENDER AND METHOD FOR SPIRAL PIPE BENDING WITH THE PIPE BENDER - Provided are a pipe bender which is capable of spiral pipe bending and a method for spiral pipe bending with radii of bend using the pipe bender. The pipe bender includes an XY sliding mechanism), which has a Y-axis movement means travelling back and forth and an X-axis movement means travelling from side to side; a turning table device for rotating a turning table provided on top thereof, the turning table device being placed on the XY sliding mechanism; a bender with a cylindrical shaft rotatably supported, the cylindrical shaft placed on the turning table and secured to a worm wheel; a center shaft passing through the hole of the cylindrical shaft and having a lower end secured to a bottom; and a bending roller provided on top of the cylindrical shaft rotatable about the center of a support roller and which is disposed adjacent to the support roller. | 04-11-2013 |
| 072148000 | With core inside coil | 2 |
| 20100263423 | Method and device for coiling thin metal strip, especially hot rolled or cold-rolled thin steel strip - A method for coiling thin metal strip, especially hot-rolled or cold-rolled thin steel strip, on a coiler mandrel, which is adjusted in diameter, in which, at the beginning, the inner windings of the coil are coiled on the adjusted coiler mandrel diameter, and, after the final winding of the coil, the coiler mandrel is pulled out, or the coil is taken off, wherein one or more profile grooves are pressed into one inner winding or into several adjacent inner windings on the circumference during rotation of the coil. | 10-21-2010 |
| 20150298190 | MANDREL OF COIL BOX - A mandrel of a coil box comprises: a cylindrical mandrel body having a center shaft disposed therein and a slot into which a front end portion of a hot bar is inserted; and a guide part which is arranged towards the inside of the mandrel body from a peripheral wall of one side of the slot so as to prevent the cooling and plastic deformation of the front end portion of the bar inserted through the slot. | 10-22-2015 |
