EP0147071A2 - Herstellung von Nachrichtenkabelseelen - Google Patents

Herstellung von Nachrichtenkabelseelen Download PDF

Info

Publication number: EP0147071A2
Authority: EP; European Patent Office
Prior art keywords: core unit; twist; angles; conductor; twist lay
Prior art date: 1983-12-23
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP84308216A

Other languages

English (en)

French (fr)

Other versions

EP0147071A3 (en

EP0147071B1 (de

Inventor

Philip Anthony Mcgettigan

Jean Marc Roberge

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Nortel Networks Ltd

Original Assignee

Northern Telecom Ltd

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1983-12-23

Filing date

1984-11-27

Publication date

1985-07-03

1984-11-27 Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd

1985-07-03 Publication of EP0147071A2 publication Critical patent/EP0147071A2/de

1987-01-07 Publication of EP0147071A3 publication Critical patent/EP0147071A3/en

1991-01-23 Application granted granted Critical

1991-01-23 Publication of EP0147071B1 publication Critical patent/EP0147071B1/de

Status Expired legal-status Critical Current

Links

Images

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
- H01B13/0228—Stranding-up by a twisting pay-off and take-up device

Definitions

This invention relates to the manufacture of telecommunications cable cores.
a telecommunications cable is constructed with a core having a multiplicity of twisted units of conductors, each unit conventionally being a twisted pair of conductors.
a core may be typically formed as a single core unit of twisted pairs, e.g. 50 or 100 pairs, or larger cores, e.g. up to 4,200 twisted pairs, each comprises a plurality of core units.
the twisted pairs are assembled together, e.g. by stranding, to form a core unit with the conductors of each pair twisted together with a predetermined lead to the twist, i.e. the distance taken along the pair for each conductor to complete a single revolution along its path. This distance will be referred to in this specification as the "twist lay" of a pair.
angle of twist lay The angle which each conductor makes with the longitudinal axis of its conductor unit as it extends along its twisted path will be referred to as the "angle of twist lay".
twist lays provided for the twisted pairs in a core unit with each pair having a particular lay and being adjacent to other pairs of different lays. Care is taken, so far as is practicable, to ensure that pairs of equal or substantially equal twist lays are separated from each other. The reason for this arrangement is to attempt to maximize the communications performance of the cable, i.e. to lessen pair-to-pair capacitance unbalance and to reduce crosstalk between pairs.
the conductors of_each pair are twisted together in a completely separate operation from forming of twisted pairs into a core unit.
the conductors of each pair are twisted together in a high speed twisting machine in which the two conductors are held upon reels which are freely rotatable in a reel cradle.
the two conductors are fed from their reels, are brought together into a common path and are twisted into the pair by rotating a flyer.
the twisted pair is then wound onto another reel immediately after twisting. This reel is removed from the twisting machine and stored until required for forming into a core unit. At this stage, it is placed in supply stands for a core unit forming means with other reels of twisted pairs and the core unit is built.
a problem with this process is that a large inventory and storage for reels of twisted pairs of different conductor gauges, insulation colours and of twist lay are required for making core units which may be of different gauge, colour or arrangement of twist lays in the pairs from one unit to the next.
a cable core of 3,600 twisted pairs of pulp insulated conductor may require up to twenty-five different lengths of twist pitch for the manufacture of its core units.
the present invention provides a method and apparatus for the manufacture of a core unit in which the inventory and storage for reels of twisted pairs is avoided.
a plurality of twisting machines are placed in tandem with a core unit forming and take-up means, and the flyers of at least some twisting machines are driven at different rotational speeds from others and with the rotational speed of at least one flyer changeable independently of the speeds of other flyers.
an apparatus for making a core unit for telecommunications cable from twisted units of individually insulated conductors comprising a plurality of twisting machines each for carrying a plurality of reels of insulated conductor and each comprising a flyer bar which is rotatable to introduce twist into the conductors to cause them to twist to form a twisted unit; means for rotating each of the flyers and for changing the ratio of the rotational speeds of at least two of the flyers, a core unit forming and take-up means in tandem with the twisting machines to draw the twisted units together and form a core unit, said core unit forming and take-up means comprising drawing means to draw twisted units into the forming and take-up means.
means is provided to change the ratio of rotational speeds of more than two and preferably all of the flyers.
the flyers may be arranged with their rotational speeds in groups.
the speed ratios of groups may be changed.
each flyer is independently drivable to enable it to have its rotational speed changed without affecting the speeds of any other flyer, whereby its speed ratio relative to any other flyer is changeable.
This may be made possible by providing a suitable individual and changeable speed drive to each flyer such as a mechanical drive having manually or automatically selectable gear ratios.
the angle and length of twist lay of any twisted pair is, of course, influenced by the relationship of the speed of rotation of its flyer and the feed speed of the conductors through the twisting machine, the latter governed by the line speed of the core unit being formed.
the ratio of speeds of rotation of the flyers may be changed after manufacture of a core unit thereby changing the relationship between the twist lays of the pairs, thus resulting in the succeeding core unit being of different design.
the present invention provides apparatus which produces a plurality of twisted pairs and then forms a core unit in tandem with the twisting operation, thereby avoiding the use of two distinct and separate process steps for these operations and the consequent need for an inventory and storage of reels of twisted conductor pairs of different twist lay and colours.
the apparatus has a universal application for core unit manufacture in that it is capable of producing many distinct and different twist lays from each twisting machine to provide the capability for a change in design of core unit.
means is provided to measure the line speed of the core unit being made and a signal sent from the measuring means influences the rotating means for the flyers to vary flyer rotation according to any variation in core unit line speed.
apparatus for making a core unit as defined above and in which means is provided to change the ratios of speeds of flyers during operation of the means to drive the core unit forming and take-up means.
the flyer speed is preferably changeable on a continously changing or cycling basis between upper and lower limits for angles of twist lays, e.g. angles which correspond to twist lays between 2.7 inches and 5.1 inches. While it is possible to provide a complete cycle of change in angle of twist lay between upper and lower limits over different lengths of the core unit for different twisted pairs, this would provide crossover points of the cycles thus producing equal angles of twist lays for different pairs at specific locations along the core unit. As the occurrence of such a phenomenon should be minimized as much as possible, it is preferable that all of the cycles are of the same length and are out of phase with one another.
the invention also includes a method of making a core unit of twisted insulated conductor units comprising:-
the method of the invention preferably includes controlling the angle of twist lay of each of the conductor units so that, at any position along the core unit, the angle of lay either differs from that of another conductor unit or is changing in a different sense from that of another conductor unit which has the same angle of twist lay. It is also preferable to change the angle of twist lay of at least some units continuously.
the angles of twist lay of all of the conductor units are changed continuously in cycles which have substantially equal lengths, amplitudes and cycle shapes.
the average twist lay of each unit is substantially equal to that of each other unit, thereby reducing to substantially zero, the variation in mutual capacitance due to each conductor unit having different twist lays.
angles of twist lays of all the conductor units may be changed continuously, it is possible to leave the lay angle of one or more of the twisted conductor units unchanged in a case where the twist lays of these certain units are outside the limits of the changing lays.
the invention includes a core unit for a telecommunications cable comprising a plurality of insulated conductors formed into twisted conductor units with each conductor unit having a single direction of twist along its length and with the angles of twist lays of some at least of the conductor units changing along the length of the core unit and, at any cross-section, being different from twist lay angles of other conductor units.
the twist lay angles change continuously and in a practical arrangement, the angles change in a cycling manner between upper and lower limits and preferably with all lay angles either being different or changing in a different sense from another conductor unit which has the same twist lay at any cross-section of the core units.
apparatus for making a stranded core unit of one hundred twisted pairs of conductors comprises apparatus for twisting the conductor pairs, including a hundred twisting machines 10 arranged in four straight banks 12 of machines with twenty-five machines in each bank.
the apparatus is capable of making cable core unit at speeds of up to and possibly in excess of 600 ft. per minute.
a core unit forming and take-up means comprising a stranding machine 14, which is of conventional construction.
the forming and take-up means also comprises, in normal fashion, a closing head 16 for drawing twisted conductor units together and a binder 18.
the stranding machine comprises a stranding flyer 17 having a "helper" capstan 19 to assist in drawing the conductor pairs through the head 16 and binder 18 in forming the core unit 23.
the main drawing means comprises a take-up reel 21 with its drive motor 20. The construction of the forming and take-up means is conventional and will be described no further.
Each of the twisting machines 10 comprises a cabinet 22, ( Figure 3), the cabinets together forming the rectangular shape of the banks 12 in Figures 1 and 2.
a reel cradle 24 for holding in rotatable fashion, two reels 26 of individually insulated conductors, as shown by Figure 5, to enable the conductors to be drawn from the reels under the drawing influence of the stranding machine 14.
Each twisting machine may be of conventional construction for enabling the conductors to be drawn from the reels and to be twisted together as they pass through and outwardly from the machine.
each twisting machine is of the construction described in a copending Canadian Patent Application Serial No. 444,294, entitled “Twisting Machine", filed December 23, 1983 and in the names of J.
each twisting machine comprises two flyers 28 and associated pulleys to provide a balanced rotational structure while avoiding conventional balance weights.
the two conductors 30 being removed from the reels 26 pass downwardly together as described in the aforementioned specification and then through a selected one only of the flyers 28.
the flyers are rotated to provide the conductors with twist, by a drive motor 31 which is an individual AC motor mounted on top of a frame structure 32 and drivably connected to the flyers by means of a pulley 34 and pulley wheels 36.
Each of the AC electric motors is a variable speed drive motor and provides a means for changing the rotational speed of the flyer, according to a feature of this invention as will be described.
each of the twisted pairs 38 moves along the line of its associated bank 12 of twisting machines and proceeds towards the stranding machine 14.
the apparatus also includes a tension equalizing means and a tension reducing means as described in a copending Canadian Patent Application Serial No. 444,295, filed December 23, 1983, and entitled "Forming Cable Core Units" in the names of J. Bouffard, A. Dumoulin and M. Seguin.
the tension equalizing means comprises a plurality of such means 40, one above the downstream end of each twisting machine 10. This is clearly seen from Figures 2 and 3, while the equalizing means is omitted from Figures 1 and 5 for clarity.
each tension equalizing means comprises a shaft 42 extending from side to side of the feedpaths for the twisted pairs, the shaft being rotatable at its ends.
One end of the shaft enters an upstanding housing 44 and has a pulley 46 engaged by a drive belt 48.
This drive belt drives a group of five of the shafts 42, each of which has a pulley 46.
One of the drive shafts for each group of five is driven by a drive motor 50 through a drive member 52.
a tubular member 54 is carried in bearings around each shaft 42, so that it is in slipping, drivable engagement with the shaft in that it rotates at substantially the same angular speed as its shaft unless it is restrained. While the bearings carrying the tubular member may suffice for this purpose, the inside of the member may also be packed with grease to hold it in more positive driving engagement with the shaft.
Each member 54 extends beneath the feedpaths for the twisted pairs of conductors.
Each drive motor 50 is coupled electrically to a means (not shown) which registers the speed of the core unit through the core unit forming and take-up means.
This registering means which is conveniently a rotor pulser is of conventional construction and will be described no further.
the speed of the drive motor 50 is such as to provide a peripheral speed for the unrestrained tubular members 54, which is slightly in excess of the draw speed of the twisted pairs into the stranding machine.
the peripheral speed of the unrestrained tubular members is a question of choice dependent upon the tension reducing effects that are required. It has been found in practice that the peripheral speed of the tubular members 54 may exceed the speed of the twisted units into the stranding machine by up to five percent and preferably between two and three percent.
each bank 12 of twisting machines there are twenty-five tension equalizing means along each bank 12 of twisting machines.
the furthest equalizing means from the stranding machine supports only one twisted pair 38, i.e. that pair from the furthest twisting machine.
the number of twisted pairs supported by equalizing means increases along each bank 12, from equalizing means to equalizing means, until 25 pairs are carried by the equalizing means closest to the stranding machine.
Guide means in the form of guide rods 56 is provided for holding the twisted pairs 38 spaced from one another as they extend across the banks 12 of machines and thus prevents the tension in one pair from influencing that in another.
these guide rods 56 are located adjacent to but slightly downstream from each of the tubular members 54 and are held stationary in support brackets (not shown) in spaced apart positions axially of the tubular members.
the tension reducing means comprises for each bank 12 of twisting machines, two driven rotatable cylinders 58 and 60, around each of which the conductors must pass on the way to the stranding machine.
the two cylinders 58 and 60 are of substantially equal diameter and have a common drive (not shown).
a drive motor for the cylinders is electrically influenced by the line speed of the core unit within the forming and take-up means to provide a peripheral speed of each of the cylinders 58 and 60, slightly in excess of the drawing speed of the twisted pairs of conductors into the stranding machine.
the degree of this excess in speed is again subject to choice dependent upon design, but in this particular machine is up to five percent and is preferably in the region of three percent.
the two cylinders 58 and 60 are not operated to draw the twisted pairs along their feedpaths at the peripheral speed of the cylinders.
the cylinders 58 and 60 do not engage each of the twisted pairs along a sufficiently long arc of contact to provide enough frictional grip to draw the pairs from the twisting machines without the assistance of tension upon the pairs downstream of the cylinders and provided by the rotation of the reel 18.
This downstream tension provided by motor 16 actually draws the pairs from the twisting machines. In doing so, it pulls the twisted pairs onto the cylinder surfaces to increase frictional contact to enable the cylinders to drive the pairs under friction at a speed substantially that of the draw speed of reel 18.
the cylinders 58 and 60 would be incapable of drawing twisted pairs from the twisting machines. While this downstream tension is maintained the cylinders will provide a drive to the twisted pairs with some slippage because of the excess peripheral speed of the cylinders.
tension in each of the conductors created by the pull of the motor 20 is at least partly governed by resistance to rotation of each reel 26 and flyer and the resistance offered by each guiding pulley or other surface with which a pair comes into contact. If these tension differences were still present when the twisted pairs reached the forming and take-up means, they would create differing tension conditions in the core unit which would lead to variations in the electrical characteristics. Also, the finished core unit would be contorted along its length, which would render it difficult or impossible to further process the cable.
the tension equalizing means overcomes this problem and the tension reducing means reduces the tensions in the pairs to enable the stranding machine to operate with no overdue strain to draw the total of a hundred twisted pairs for the stranding operation.
the tubular members 54 As the twisted pairs pass across and are supported by the tubular members 54, they travel at different speeds dependent upon their positions and path lengths in the cable core unit 23 being formed by the forming and take-up means. There is a tendency for the tubular members to urge the twisted pairs in the forward direction because of the faster driven peripheral speed of the members. However, with regard to each tubular member 54, because of the slipping, driving engagement between the tubular members and their shafts 42, the upstream tensions in the twisted pairs and the effect of their relative speeds combine to slow down the speed of rotation of the tubular member to a speed which is influenced by these tensions and relative speeds of the pairs.
each bank 12 the pairs of conductors with their relative tensions substantially closer than at upstream positions, approach and go through their tension reducing means.
the pull by the stranding machine increases the frictional contact of the twisted pairs against the surfaces of the cylinders.
these cylinders are rotating at a peripheral speed which is greater than the throughput speed of the twisted pairs into the stranding machine, their degree of grip upon the pairs is insufficient to draw the pairs from the twisting machines at the peripheral speeds of the cylinders because of the small arc of contact between the cylinders and the twisted pairs as discussed above.
the degree of drive by the cylinders is dependent upon the frictional grip upon them by the pairs which increases and decreases in proportion to the downstream tension created by the draw of the stranding machine.
the drive by the cylinders upon each pair is purely frictional and serves to reduce tension in the twisted pairs. Any slight increase in the tension downstream from the cylinders will improve their frictional engagement with the pair, thereby reducing the tension again. It follows that the tension in any twisted pair upstream of the cylinders (e.g. up to 3 lbs.) is reduced on the downstream side to an acceptable level (e.g. about 1.0 lbs.) for drawing into the stranding machine. It is stressed that the driving force applied to each twisted pair is dependent upon the downstream tension in that pair.
the cylinders 58 and 60 drive each twisted pair at any moment at its own individual speed irrespective of the speed of any of the other pairs.
the speeds on the pairs must, of course, differ from one another because of the different path lengths they will occupy in the core unit. The operation of cylinders 58 and 60 thus conveniently allows for this.
each of the drive motors 31 is independently drivable at a speed such as to provide a particular twist lay to the pair of conductors being formed by the associated machine 10.
This twist lay may be completely independent of twist lays of other pairs and may be changed either during the twisting of the pairs and forming of a core unit or after formation of one core unit and before start-up of a subsequent pair twisting and core unit forming operation.
FIG. 6 shows a control means for controlling the rotational speeds of the flyers.
This control means comprises a hundred microprocessors 66, i.e. one microprocessor for each motor 31.
a computer 68 is connected by an address bus 70 to each of the microprocessors.
the conventional means provided for measuring the actual line speed of a core unit as it is being drawn into the stranding machine is connected to each of the microprocessors by lines 71 to send frequency signals on a continuous basis, these signals corresponding to the actual core unit line speed.
the computer contains instructions for issuing to each of the microprocessors for controlling its associated AC motor 31 to drive the flyers of its twisting machine at the appropriate speed and provide the required twist lay to the pair of conductors being twisted upon that machine. These instructions correspond to a particular or actual line speed of the core unit being made.
the computer addresses the microprocessors on the address bus 70 and sends the instructions to each microprocessor in the form of a digital signal which corresponds to the required twist lay produced by that particular twisting machine. This signal is stored in a memory means of the microprocessor until it is replaced by a new digital signal sent on the address bus. A signal is then sent by each microprocessor along line 72 to an AC inverter drive 74.
This signal is an AC signal having a frequency corresponding to the digital signal sent on the address bus, but influenced by the frequency signal for the line speed received on line 71 so that it is modified to control the appropriate motor 31 to produce the twist lay required for the actual line speed of the core unit.
the AC inverter drive 74 converts the incoming signal to DC current and scrambles it to reconvert it into an AC output signal of the required frequency to drive the AC motor 31 at the desired speed.
the inverter drive has the effect of reducing the frequency from that received by it from the microprocessor and this frequency is one which is suitable for sending to the motor 31.
a signal may be sent from the computer to each microprocessor for start-up of a core unit forming operation, and then the angles of twist lays produced by each of the twisting machines is as desired and controlled by the rotational speeds of each AC drive motor 31.
fresh instructions may be fed into the computer to send signals to the microprocessors upon a subsequent operation to form a core unit with twisted pairs having different twist lay angles from the core unit which was formed previously.
the control means enables the apparatus together with the individual AC drive motors, to avoid the conventional necessity of having a storage and inventory of reeled twisted pairs of conductors.of different gauges, colours and lay angles.
core units of different design, different lay angles, different conductor gauges, different colour and different types of insulation may be produced merely by changing the reels.26 for fresh reels in the twisting machines and by providing different instructions to the computer 68 for controlling the microprocessors.
one or all of the twisted pairs may have twist lay angles which vary and these angles preferably vary on a continuous cyclical basis between upper and lower twist angle limits.
this apparatus makes it possible to provide varying twist lay angles which at any particular position along the core unit either differ one from each of the others or two of the angles may be the same as one another over an insignificantly short distance at cyclic crossover points with the angles changing in opposite sense from one another.
This can be effectively provided by issuing suitable instructions through the computer 68 to cause the flyers 28 to rotate at varying speeds to produce twist lay angles, which while lying between the same upper and lower limits, do in fact, cycle between these limits in out-of-phase relationship with each other.
twelve out-of-phase cycling twist lay angles are provided. Eight of the phases may each be applied to eight pairs of conductors and the remaining four phases may each be applied to nine pairs of conductors.
each cycle has the twist lay angles cycling between an angle which is represented by upper limit of twist lay of 4.9 inches and one which is represented by a lower limit of 2.7 inches.
a complete cycle for each twisted pair occurs over a distance of approximately 100 meters of the finished core unit.
the cycles of twist lay angle of the pairs have substantially equal lengths, amplitudes and other cyclic characteristics to produce average twist lays in the units which are substantially equal thereby minimizing differences in the mutual capacitance from one pair to another and which is influenced by the twist lay.
each cycling phase of twist lay angles produces an angle equal to that of another phase where one twist lay angle is increasing on its cycle, while the other is decreasing.
this cycle has the same twist lay and lay angle value at points 78 and 80 as cycles 82 and 84 respectively for different conductor pairs.
twist lay angles of the pairs are equal at these crossover points on the chart, then these points represent extremely short distances along the core unit which can have only an extremely minor effect upon the electrical characteristics of the finished cable.
the method of producing the varying lay angles ensures that the motors 31 drive in such a way as to produce movement along the cycle between the cycle limits in one direction along a shorter length of core unit than in the other direction.
Figure 8 is a graph representing a possible twenty-five out-of-phase cycles of lay angles. As shown in Figure 8, the varying twist lay angles are represented by upper and lower limits of twist lay cf 2.7 and 5.1 inches and each cycle occurs over approximately 100 meters.
Figures 7 and 8 show cycles of twist lay angles with substantially equal lengths and amplitudes.
substantially equal average twist lays in the conductor pairs may be produced by having varying cycle lengths and amplitudes in the cycles of twist lay angle in each pair, but, of course, this would be more difficult to accomplish.
the average twist lay of each conductor unit is substantially equal to that of every other unit thereby substantially entirely avoiding differences in mutual capacitance and mutual inductance between the conductor units which is influenced by the twist lay.

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Processes Specially Adapted For Manufacturing Cables (AREA)
Ropes Or Cables (AREA)
Communication Cables (AREA)

EP19840308216 1983-12-23 1984-11-27 Herstellung von Nachrichtenkabelseelen Expired EP0147071B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CA444289		1983-12-23
CA000444289A CA1213951A (en)	1983-12-23	1983-12-23	Manufacture of telecommunications cable core units

Publications (3)

Publication Number	Publication Date
EP0147071A2 true EP0147071A2 (de)	1985-07-03
EP0147071A3 EP0147071A3 (en)	1987-01-07
EP0147071B1 EP0147071B1 (de)	1991-01-23

Family

ID=4126825

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19840308216 Expired EP0147071B1 (de)	1983-12-23	1984-11-27	Herstellung von Nachrichtenkabelseelen

Country Status (6)

Country	Link
EP (1)	EP0147071B1 (de)
JP (1)	JPS617512A (de)
CA (1)	CA1213951A (de)
DE (1)	DE3484013D1 (de)
ES (2)	ES8606725A1 (de)
FI (1)	FI80162C (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2052705A1 (de) *	1969-10-27	1971-05-13	Akachi Hisateru	Kabel und Vorrichtung und Verfahren zur Herstellung eines Kabels
GB1303106A (de) *	1970-01-23	1973-01-17
FR2202343A1 (de) *	1972-10-04	1974-05-03	Cortinovis Spa

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5136821A (en) *	1974-09-25	1976-03-27	Hitachi Electronics	Satsuzokan no kodeninkyokukeiseihoho

1983
- 1983-12-23 CA CA000444289A patent/CA1213951A/en not_active Expired
1984
- 1984-11-27 DE DE8484308216T patent/DE3484013D1/de not_active Expired - Fee Related
- 1984-11-27 EP EP19840308216 patent/EP0147071B1/de not_active Expired
- 1984-12-19 FI FI845025A patent/FI80162C/fi not_active IP Right Cessation
- 1984-12-21 ES ES538953A patent/ES8606725A1/es not_active Expired
- 1984-12-22 JP JP27166684A patent/JPS617512A/ja active Granted
1985
- 1985-12-16 ES ES549980A patent/ES8706285A1/es not_active Expired

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2052705A1 (de) *	1969-10-27	1971-05-13	Akachi Hisateru	Kabel und Vorrichtung und Verfahren zur Herstellung eines Kabels
GB1303106A (de) *	1970-01-23	1973-01-17
FR2202343A1 (de) *	1972-10-04	1974-05-03	Cortinovis Spa

Also Published As

Publication number	Publication date
FI80162C (fi)	1990-04-10
EP0147071A3 (en)	1987-01-07
ES549980A0 (es)	1987-05-16
ES8706285A1 (es)	1987-05-16
JPH0381250B2 (de)	1991-12-27
ES538953A0 (es)	1986-04-16
FI845025A0 (fi)	1984-12-19
ES8606725A1 (es)	1986-04-16
FI845025L (fi)	1985-06-24
CA1213951A (en)	1986-11-12
FI80162B (fi)	1989-12-29
JPS617512A (ja)	1986-01-14
EP0147071B1 (de)	1991-01-23
DE3484013D1 (de)	1991-02-28

Legal Events

Date	Code	Title	Description
1985-05-04	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1985-07-03	AK	Designated contracting states	Designated state(s): CH DE FR GB IT LI NL SE
1986-11-19	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1987-01-07	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): CH DE FR GB IT LI NL SE
1987-05-06	17P	Request for examination filed	Effective date: 19870310
1989-10-11	17Q	First examination report despatched	Effective date: 19890825
1990-12-08	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1991-01-23	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI NL SE
1991-02-13	ITF	It: translation for a ep patent filed	Owner name: ING. C. GREGORJ S.P.A.
1991-02-28	REF	Corresponds to:	Ref document number: 3484013 Country of ref document: DE Date of ref document: 19910228
1991-03-22	ET	Fr: translation filed
1991-11-23	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1991-11-23	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1992-01-15	26N	No opposition filed
1993-11-10	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19931110 Year of fee payment: 10
1993-11-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19931117 Year of fee payment: 10 Ref country code: GB Payment date: 19931117 Year of fee payment: 10
1993-11-23	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19931123 Year of fee payment: 10
1993-11-29	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19931129 Year of fee payment: 10
1993-11-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19931130 Year of fee payment: 10
1994-11-27	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19941127
1994-11-28	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19941128
1994-11-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Effective date: 19941130 Ref country code: CH Effective date: 19941130
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 84308216.5
1995-06-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19950601
1995-07-17	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1995-07-26	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19941127
1995-07-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19950731
1995-07-31	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1995-08-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19950801
1995-08-07	EUG	Se: european patent has lapsed	Ref document number: 84308216.5
1995-09-29	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST

Publication	Publication Date	Title
US3715877A (en)	1973-02-13	Communication cable
US4100721A (en)	1978-07-18	Apparatus for twisting insulated conductors for use in multiconductor communication cable into quads
CN102354583B (zh)	2013-03-06	一种退扭绞线机
US6272828B1 (en)	2001-08-14	Double-twisting cable machine and cable formed therewith
US5564268A (en)	1996-10-15	Apparatus and method for the manufacture of uniform impedance communication cables for high frequency use
US4604862A (en)	1986-08-12	Manufacture of telecommunications cable cores
CA2226878C (en)	2000-12-12	Apparatus and method for the manufacture of uniform impedance communication cables for high frequency use
US4196576A (en)	1980-04-08	Method and apparatus for S-Z twisting of electrical cables
US4590754A (en)	1986-05-27	Forming cable core units
EP0147071B1 (de)	1991-01-23	Herstellung von Nachrichtenkabelseelen
US20030126851A1 (en)	2003-07-10	Apparatus and method for producing twisted pair cables with reduced propagation delay and crosstalk
CA1217251A (en)	1987-01-27	Core unit for a telecommunications cable
EP0147070B1 (de)	1989-01-25	Fertigung von Kabelseeleneinheiten
US5996325A (en)	1999-12-07	Machine for twisting conductor cables together
WO2000051137A3 (en)	2000-10-19	Group twinner for conductor bobbins and communication cables for high frequency use
CA1233969A (en)	1988-03-15	Two-stage twisting device for communication cables
CN221304347U (zh)	2024-07-09	一种具有预绞线机构的电缆绞丝机
CA1239278A (en)	1988-07-19	Manufacture of telecommunications cable core units
JPS58103709A (ja)	1983-06-20	ユニツト型通信ケ−ブルの製造方法
US4559771A (en)	1985-12-24	Manufacture of telecommunications cable core units
JPS5924089Y2 (ja)	1984-07-17	通信ケ−ブルの製造装置
SU1589326A1 (ru)	1990-08-30	Устройство дл разнонаправленной скрутки проволок или проводов
CA1241530A (en)	1988-09-06	Manufacture of telecommunications cable core units
CN118335423A (zh)	2024-07-12	单绞装置及装配有该单绞装置的电线电缆生产设备
JPS6310851B2 (de)	1988-03-09