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| Number | Title | Issue Date |
| 8015850 | Spring manufacturing machine A swing bar is connected to a slide by attaching a first pivot to one end of the swing bar, and a bending die is mounted to the other end. A connecting piece is provided on the upper surface of the swing bar, and a second pivot capable of freely turning is inserted ... | 09/13/2011 |
| 7353680 | Universal compression spring former The compression spring former disclosed by the present invention contains an external diameter mechanism, spacing mechanism, wire-feeding mechanism, cutting mechanism, length-detecting mechanism, sorting mechanism, and microcomputer control mechanism. Within the wor... | 04/08/2008 |
| 7143620 | Spring manufacturing apparatus and driving force transmitting component mounted on the apparatus The slide motions of tools mounted on tool units (400A, 400B, 400C) are realized by a single ring gear (10) serving as a common driving force for all the tool units and arranged on a forming table (200), and cam shaft blocks (20... | 12/05/2006 |
| 7080537 | Spring manufacturing machine To efficiently manufacture springs having various kinds of shapes, a spring manufacturing machine is structured such as to bend a wire by two inner engagement projections (47) by adjusting a position of a position adjusting table (34), fitting a gap ( | 07/25/2006 |
| 7012217 | Method and apparatus for making welded large pipes In a method and apparatus for making welded large pipes, a leading end of a hot strip is connected to a trailing end of a leader strip and then subjected to a two-stage leveling for strip flatness in transverse direction and strip flatness in longitudinal direction.... | 03/14/2006 |
| 6951160 | Cutting device for spring manufacturing machines A cutting device for spring manufacturing machines includes an actuator, a transmission mechanism and a sliding mechanism. The actuator includes a connecting rod with a pin hole formed therein. The sliding mechanism includes a track, a slider and a switching pin. Th... | 10/04/2005 |
| 6928846 | Method of manufacturing a coil spring having an oblique and straight axial line In a cold coil forming process, a pitch control tool is moved in synchronism with the displacement of the outer diameter control roller so as to form a coil spring having a straight and oblique axial line, and, at the same time, maintain a pitch of the coil wire sub... | 08/16/2005 |
| 6142002 | Spring manufacturing apparatus and tool selection apparatus Plural types of tools are mounted on the tool selection table 210 so as to be selectable by rotation of the tool selection table 210. The tool selection table 210 is made movable by numerical control in the X, Y and Z directions, by virtue of the front-to... | 11/07/2000 |
| 6092407 | Ring bending machine The invention relates to a ring bending machine for pipes and metal profile rods comprising two supporting shafts supported in spaced relation to one another in a carrier plate and rotatably driven, and a pressing shaft arranged centrically with respect t... | 07/25/2000 |
| 6045136 | Split sealing element A split sealing member for a rotary shaft comprising a coiled body, with non-adjoined ends, having a plurality of turns about a central axis, bent along the course of the body such that the body is divided into a radially-inner portion and a radially-oute... | 04/04/2000 |
| 6023955 | Device for the bending of springs for spring interior mattresses A device for the manufacture of elastic springs for spring interior mattresses, vehicle cushions, cushions and the like. The springs are constructed from a row of continuous, spiral shaped parts arranged after each other. The device comprises a feeding to... | 02/15/2000 |
| 5941289 | Apparatus for making and inserting helical wire binders An apparatus for converting a length of metallic or other wire into a series of successive helical wire binders and for threading successive binders into rows of holes in the spines of successive stacks of sheets at a binding station includes an elongated... | 08/24/1999 |
| 5937685 | Method and apparatus for linear spring A method and apparatus are provided for forming the linear springs. In the apparatus three or more forming tools are arranged radially about the center of the quill for guiding the linear material are rotated within a predetermined angle about the centerl... | 08/17/1999 |
| 5875666 | Spring manufacturing apparatus and position adjustment apparatus for tools A tool assembly 120 is attached on a forming table 101 movably in a vertical direction with respect to the forming table 101. The tool assembly 120 has a wedge tool assembly 140 which inserts a wedge tool between coils of wire W being continuously rolled ... | 03/02/1999 |
| 5868996 | Device for manufacturing curved helical springs The objects are a reliable and economical method of and device for manufacturing helical springs that are curved when unstressed from sections of wire or rod heated to coiling temperature. The spring is coiled straight and then curved it to its final shap... | 02/09/1999 |
| 5829293 | Automatic spring formation apparatus An automatic spring formation apparatus includes a frame on which a tool support plate is mounted. A plurality of tool sets are substantially angularly equally-spaced mounted on the support plate and extending in a radial direction with respect to a cente... | 11/03/1998 |
| 5816091 | Wire shaping apparatus, in particular universal spring winding machine, with cutting device In order to obtain better noise protection, longer service life of machine and tools, and to increase the productivity of wire shaping apparatuses, in particular, a universal spring winding machine with a cutting device (16) consisting essentially of a mo... | 10/06/1998 |
| 5706687 | Spring coiling machine A spring coiling machine has a rotary feed assembly with a servo motor for driving the feed rolls mounted therein and forming a part thereof. Substantially all tooling including a coiling tool, a pitch tool and an auxiliary arbor are also servo motor oper... | 01/13/1998 |
| 5657657 | Spring coiling machine with hybrid servo motor-cam torsion control A spring coiling machine has a feed assembly with a servo motor for driving the feed rolls. Substantially all tooling including a coiling tool, a pitch tool and an auxiliary arbor are also servo motor operated with three axes of servo control including a ... | 08/19/1997 |
| 5600984 | Device for bending tubes A device for bending tubes including a platform, a feeding mechanism having a sliding seat, a pair of lugs, and a chuck, a chuck controlling mechanism having a direction controller and a chuck driving gearing, an idle gear pivotally mounted on the sliding... | 02/11/1997 |
| 5586461 | Methods and apparatus for manufacturing helical products Methods and apparatus for forming devices including dead-ends and insulator ties from flat and other strips of material, as well as the devices themselves, are disclosed. Components of these devices may be formed continuously from a single strip, avoiding... | 12/24/1996 |
| 5363681 | Apparatus for shaping wire The invention relates to a wire shaping device. State of the art: DE 39 15 784 C1 discloses a wire shaping device comprising a program controlled rotating and displacing head which carries shaping tools and on to which moves the wire arriving from a stati... | 11/15/1994 |
| 5301529 | Coil winding method and apparatus A close wound coil is formed by a sequence of steps including supplying a wire to be formed into a coil onto a rotating mandrel by means of a guide wheel and urging the wire against the mandrel by means of a pressure wheel so as to form a coil. The formed... | 04/12/1994 |
| 4996861 | Apparatus for forming an elogated tubular element into a helix The apparatus of the present invention includes an externally threaded spindle to which one end of a thin walled metal tube is detachably secured. The spindle is rotated to wind the tube into the external thread, thereby producing a helix. As the tube is ... | 03/05/1991 |
| 4993250 | Variable gear ratio coiling machine A variable power input wire coiler for coiling wire of different diameters, singly, in tandem, or in triple form, there being interchangeable drive gears to the coiling rolls astraddle the mandrel, such gears being disconnectable from flexible drive shaft... | 02/19/1991 |
| 4836514 | Preloaded spring, method and apparatus for forming same A closely wound, coil type tension spring of one hand having an initial tension exceeding that obtainable by prior spring forming techniques is formed by reverse winding an open-wound compression spring of the opposite hand. Alternative methods and appara... | 06/06/1989 |
| 4719683 | Preloaded spring, method and apparatus for forming same A closely wound, coil type tension spring of one hand having an initial tension exceeding that obtainable by prior spring forming techniques is formed by reverse winding an open-wound compression spring of the opposite hand. Alternative methods and appara... | 01/19/1988 |
| 4700558 | Wire coiling method and device A coil-forming apparatus includes three pinch wheels spaced about the periphery of an idler roller rotatably mounted to a platen. Wire is fed through the platen between the pinch wheels and idler roller where the wire is held in place. Rotation of the pla... | 10/20/1987 |
| 4698994 | Mechanism for preliminary anchoring of a wire rope bolt The invention relates to a method and mechanism for preliminary anchoring of a wire rope bolt in a bore by means of friction. The object is to eliminate the need to use wooden wedges or to bend the strands of the rope backwards, procedures which are time-... | 10/13/1987 |
| 4606209 | Disc roller mechanism for forming helical shapes A disc roller mechanism and method for forming helical-shaped structures from a feed wire or rod, wherein the feed wire is drawn through a plurality of staggered disc-shaped forming rollers by rotation of the rollers, while the wire is also being rotated ... | 08/19/1986 |
| 4592223 | Wire forming apparatus Wire forming apparatus has a pair of rotary dies movable together and apart on a rectilinear path. The dies are adapted to hold a length of wire at opposite ends thereof such that on contra-rotation the dies approach each other while deforming said ends i... | 06/03/1986 |
| 4569216 | Sequential variable pitch coiler A wire coiling machine for pattern forming resistance wire coils with controlled spacing of the turns, one of the two forming rolls being axially shiftable relative to the other by an actuator motor, the coiling rolls each having a surface configuration s... | 02/11/1986 |
| 4561278 | Coiling machine A wire coiling machine of simplified construction, direct one-to-one synchronized drive from a rear drive arbor through a pair of friction drive rolls astraddle it, to a pair of flexible drive shafts connecting the drive rolls to a pair of front forming r... | 12/31/1985 |
| 4546631 | Roller mechanism for forming helical shapes A roller mechanism and method for forming helical shaped structures from a feed wire or rod, wherein the feed wire is drawn through a plurality of staggered forming rollers by rotation of the rollers, while the wire is also being rotated about its own axi... | 10/15/1985 |
| 4435886 | Pipe-welding mill for production of coiled pipes A pipe-welding mill for production of coiled pipes from coiled strips comprises a coil preparation section including unwinders disposed in a manner allowing displacement thereof in a direction perpendicular to the direction of pipe movement, and a magazin... | 03/13/1984 |
| 4426871 | Apparatus for producing helical wire coils Apparatus for producing a helical wire coil which can be subdivided into discrete spiral binders for use in steno pads or other types of stationery products has a driven mandrel with a cylindrical intermediate section flanked by two frustoconical sections... | 01/24/1984 |
| 4402205 | Apparatus for forming helical springs The method of forming helical springs and the installation for carrying same into effect relate to manufacture of springs and can be used with particular advantage for the purpose of forming helical springs by winding hot bars on a rotating mandrel. Accor... | 09/06/1983 |
| 4387498 | Method for making helically wound surface-coated tubes, and apparatus for carrying out this method A method of making a multi-layer tube includes the steps of pre-heating two elongate metal strips and bending each to a substantially arcuate curvature. Each strip is then wound helically with abutting edges, one strip being closely concentrically wound a... | 06/14/1983 |
| 4302959 | Method of forming helical springs The method of forming helical springs and the installation for carrying same into effect relate to manufacture of springs and can be used with particular advantage for the purpose of forming helical springs by winding hot bars on a rotating mandrel. Accor... | 12/01/1981 |
| 4287743 | Method and device for the manufacture of helical rotor blanks for helical gear machines The method and device for the manufacture of helical rotor blanks for helical gear machines by moving a straight cylindrical shaft in a direction along the shaft axis while rotating it around the shaft axis by means of passing the shaft between at least t... | 09/08/1981 |
