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Class 72/138 - By use of means acting by and during machine operation to form coil of irregular pitch and/or diameter


Subclass of Class 72 - Metal deforming
Definition: Subject matter including use of means to produce a coil
No. of patents: 71
Last issue date: 04/08/2008


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NumberTitleIssue Date
7353680Universal 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
7198187Spring manufacturing machine
To improve a spring processing performance, a spring manufacturing machine is structured such that a rotating casing (26) is rotated around a common center line (C1), a final wire rod guide (17) is rotated around the common center line (C1
04/03/2007
7198068Cassette pigtailing machine for a coil spring
A pigtailing machine includes a B forming head and a support pedestal secured to a cassette base. The cassette base is located upon a base which mounts the A forming head to provide for a relatively quick changeover should another double pigtail coil spring need be ...
04/03/2007
7143620Spring 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
7107806Spring manufacturing machine
In order that a moving locus of a leading end of a tool 55 provided to a tool mounting device 54 is aligned with a direction orthogonal to a center line W of a wire rod passage (not shown) of a final wire rod guide 13, a tool operating apparatus...
09/19/2006
7080537Spring 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
7024901Wire spring forming apparatus
A high-speed wire spring forming apparatus capable of easily adjusting a coil diameter is provided that includes: a wire feeder having a pair of feeding rollers for feeding a wire to a spring forming stage via a quill serving as a wire guide; a revolving mechanism f...
04/11/2006
6948348Method of arranging coils in a spring coil assembly
A spring coil assembly having a first row of coils arranged in a first spacing pattern and a second row of coils adjacent the first row and arranged in a second spacing pattern that is different from the first spacing pattern. The spring coil assembly can be assembl...
09/27/2005
6939418Process for the thermomechanical treatment of steel
A process for thermomechanical treatment of steel for torsionally-strained spring elements, the initial material being heated with a heating rate of at least 50 K/s and austenitized, and then, being formed in at least one forming step with the formed product being q...
09/06/2005
6928846Method 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
6836964Method and apparatus for producing a helical spring
A method for producing a helical spring by coiling an element wire while feeding the wire, and performing an after-treatment includes at least a warm setting process. The method includes (1) providing a plurality of parameters for defining a desired configuration of...
01/04/2005
6758079Coil spring forming machine
A coil spring forming machine for forming a coil spring having a dimensional characteristic, such as a coil diameter and a coil pitch, includes a frame, a control tool movably mounted on the frame, and a control mechanism mounted on the frame and coupled to the cont...
07/06/2004
6648996Method and apparatus for producing a helical spring
The present invention is directed to a method for producing a helical spring which comprises the steps of providing a plurality of parameters for defining a desired configuration of a target helical spring, setting at least bending positions and twisting ...
11/18/2003
6640836Coil and coil head formation dies for coils with non-conventional terminal convolutions
Machinery for automated manufacture of formed wire structures such as innerspring assemblies for mattresses and seating and flexible support structures includes one or more coil formation devices configured to produce generally helical spring coils having...
11/04/2003
6550301Method for producing an inclined helical spring
The present invention is directed to an inclined helical spring having a plurality of coils along an inclined coil axis. Each coil constituting a part or the whole length of the helical compression spring is increased and decreased in diameter along the l...
04/22/2003
6470725Method of continuously and controlledly varying the initial stress of springs during their production and a machine for carrying out such a method
A method for the production of springs in winding machines provided with one or two winding noses at the winding mandrel of the spring, wherein the or at least one of the winding noses is initially rotated through a given angle such as to create the appro...
10/29/2002
6393888Spring winding device, particularly for spring winding machines
In a spring winding device for producing right-hand or left-hand helical springs from wire, with pull-in rollers, a wire guide and two winding apparatuses, each of which has a slide guide body with a slide displaceably arranged therein, every slide guide ...
05/28/2002
6378854Methods for manufacturing coils and apparatus for same
A spring assembly having a coil containing a core and methods and apparatus for manufacturing the same are disclosed. The coil includes a core between reduced portions of the coil. One device for manufacturing the coil includes a coiling machine having an...
04/30/2002
6062054Spring forming apparatus
A first large drive gear for slider driving mechanisms and a second large drive gear for a tool rotating driving mechanism are disposed coaxially with an axis of a wire feeding quill and in parallel with a rear surface of a front base frame panel, and a s...
05/16/2000
6023955Device 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
6000265Spring manufacturing apparatus
A point tool assembly includes a vertical moving table disposed on a forming table and movable in a direction parallel to the forming table surface and perpendicular to the feed direction of a wire, and a longitudinal moving table disposed on the forming ...
12/14/1999
5875666Spring 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
5875664Programmable servo-motor quality controlled continuous multiple coil spring forming method and apparatus
A spring forming machine is provided with closed-loop feedback from sensors which monitor dimensions of the coils and heads of the spring being formed, servo motors which control wire feed speed, coil radius and pitch forming elements, and coiling directi...
03/02/1999
5868996Device 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
5791184Spring-making machine
A spring-making machine including a spring wire feeding device having a frame, a driving disk rotatably mounted on the frame, a first sleeve fixedly arranged on one side of the frame and having a plurality of fixing holes, a second sleeve inserted into th...
08/11/1998
5732583Wire forming apparatus
A circular table is provided around a wire forming portion. A plurality of forming tool units are disposed on the surface of this circular table such that they are directed to almost the central position (wire forming portion) of the table. Each forming t...
03/31/1998
5706687Spring 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
5660067Versatile spring making machine
A versatile spring making machine including a processing tool locating unit consisting of a transverse slide moved in the transverse direction and a longitudinal slide moved in the longitudinal direction, a tool assembly moved by the processing tool locat...
08/26/1997
5452598Automatic spring formation apparatus
An automatic spring formation apparatus includes a base on which an upright work table is mounted. A number of linear motion spring formation tools and at least a curved motion spring formation tool are slidably mounted on the front working surface to wor...
09/26/1995
5444905Apparatus for manufacturing mattresses and box springs
An apparatus for forming springs for incorporation into an innerspring mattress is disclosed. The apparatus includes the use of change gears to facilitate the manufacture of a variety of innerspring sizes....
08/29/1995
5442944Auto-feed control mechanism for computerized numerically-controlled spring forming machine
Disclosed is an auto-feed control mechanism for computerized numerically-controlled spring-forming machines. A gooseneck tool handle is fixedly connected at a middle point to a movable supporting arm and pivotly connected at a rear end to a fixing member,...
08/22/1995
5269165Apparatus for making coiled springs
A process for making coiled springs by intermittently rotating feed rollers with a wire held therebetween to feed the wire through a wire guide into engagement with a bending die at the outlet of the wire guide, thereby coiling the wire is provided, where...
12/14/1993
5259226Mechanism for forming spring pitch
A spring manufacturing apparatus has a first mode in which a spring pitch is formed by inserting a wedge tool between coils of a wire material forcibly bent by a point tool, and a second mode in which the spring pitch is formed by pushing the bent wire ma...
11/09/1993
5243746Method for manufacturing coil springs
A method of manufacturing coil springs being performed by giving priority to the free length of coil springs with a feature that the length of wire material used for forming initial- and main-coiling sections and an end coiling section of a single coil sp...
09/14/1993
5182930Method for making coiled springs
A process for making coiled springs by intermittently rotating feed rollers with a wire held therebetween to feed the wire through a wire guide into engagement with a bending die at the outlet of the wire guide, thereby coiling the wire is provided, where...
02/02/1993
5127247Spring coiling machine having interchangeable presettable elements
A coiling device for spring coiling machines, having exchangeable elements that contain adjusting screws. Each coiling pin is mounted in a receptacle so as to rotate therewith and so as to be able to rotate therein about its longitudinal axis after a clam...
07/07/1992
4991277System for manufacturing springs
Springs manufactured to have a desired free length nonetheless exhibit a slight difference in free length from one spring to another. This results from a change in elasticity caused by a difference in wire material or a non-uniformity in wire cross sectio...
02/12/1991
4947670Universal automatic spring-making machine
A spring-making machine includes a plurality of forming tools reciprocatively sliding in a plurality of tool guides radially disposed on a panel so that a spring wire led through a central chuck of the machine will be automatically formed as diversified s...
08/14/1990
4937937Method for the manufacture of piston rings
A method for the manufacture of piston rings from a metal strip, at least includes providing rings having a predetermined non-circular profile, by the metal strip being first bent to a uniform radius of curvature at least 2 percent less than the minimum r...
07/03/1990
4934165Computer controlled coiling machine
A system for controllng the feeding of wire to a workstation for the formation of a coil spring by means of at least one moveable work tool that is disposed at the workstation and that is selectively operated to move to different positions in the formatio...
06/19/1990
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