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WO1996002921A1 - Procede d'enroulement d'un conducteur et conducteur enroule - Google Patents

Procede d'enroulement d'un conducteur et conducteur enroule Download PDF

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Publication number
WO1996002921A1
WO1996002921A1 PCT/GB1995/001663 GB9501663W WO9602921A1 WO 1996002921 A1 WO1996002921 A1 WO 1996002921A1 GB 9501663 W GB9501663 W GB 9501663W WO 9602921 A1 WO9602921 A1 WO 9602921A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductor
coiling
cord
turns
superimposed
Prior art date
Application number
PCT/GB1995/001663
Other languages
English (en)
Other versions
WO1996002921B1 (fr
Inventor
Robin Fry
Original Assignee
Robin Fry
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.)
Filing date
Publication date
Application filed by Robin Fry filed Critical Robin Fry
Publication of WO1996002921A1 publication Critical patent/WO1996002921A1/fr
Publication of WO1996002921B1 publication Critical patent/WO1996002921B1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/06—Extensible conductors or cables, e.g. self-coiling cords
    • H01B7/065—Extensible conductors or cables, e.g. self-coiling cords having the shape of an helix

Definitions

  • This invention relates to the coiling of electrical conductors which serve as resiliently extensible electrical leads.
  • the invention has particular application in preventing the unwanted twisting of helical telephone cords and the like.
  • the well known helical telephone cord has an inherent tendency to twist on itself and kink. This not only restricts its full functionality but manually untwisting the coiled cord repeatedly can be tiresome. Previous attempts to allay this problem have involved the use of additional elements which are attached to the helical cord in some way so as to prevent it from twisting. Such devices have served only to correct the symptoms and not to resolve the actual source of the problem.
  • the present invention provides methods for the coiling of a cord that address the cause of the problem of kinking. Furthermore, as this invention involves methods for manipulating simply the cord itself no additional elements are required. Accordingly, the present invention consists in one aspect in a method of coiling an electrical conductor so as to provide a resiliently extensible lead, wherein additional turns of opposite axial sense are superimposed upon a generally helical coil structure such that no net twist is imparted to the conductor.
  • said additional turns are superimposed alternately with the generally helical coil structure.
  • the present invention consists in an electrical conductor coiled so as to provide a resiliently extensible lead, wherein additional turns of opposite axial sense are superimposed upon a generally helical coil structure such that no net twist is imparted to the conductor.
  • said additional turns are superimposed alternately with the generally helical coil structure.
  • a method of coiiing an elongate electrical conductor so as to provide a resiliently extensible lead comprising twisting the conductor along its length concomitantly with winding the twisted length in a generally helical path such that no net twist is imparted to the conductor.
  • the present invention consists in an electrical conductor coiled so as to provide a resiliently extensible lead in such a manner that substantially no net twist is imparted in the coiling to the conductor.
  • Figure 1 (c) depicts an ordinary telephone with a twisted cord
  • Figure 2 illustrates one embodiment of a coiled cord according to one aspect of the present invention
  • FIGS 3(a), (b), (c) and (d) diagrammatically map out the steps for coiling the cord of Figure 2;
  • Figure 4 shows one cycle of the coil of Figure 2 to an enlarged scale
  • Figure 5 shows a planar structure embodiment according to the first aspect of the present invention.
  • Figure 6 shows another embodiment according to a further aspect of the present invention.
  • the coiling of the cord entails winding the cord in a circular motion while translating it along a linear path, thus producing a generally helical structure.
  • Figure 1 (a) shows a cord wound with the leading edge slanting in the forward direction. The two points on the cord labelled 5 and 6 represent one complete cycle of the cord, in a forward turn. If an axial force applied to points 5 and 6 pulls the two points apart, it can be seen from Figure 1 (b) that the cord has turned through 360° and that a twist exists in the cord. Repeatedly coiling a cord in this way inadvertently loads a resultant twist over the length of the cord in the opposite direction to the coiling.
  • FIG. 2 there is illustrated a telephone cord according to one aspect of the present invention.
  • the coiling of the cord is again essentially a circular winding motion along a linear path, however, the exact manner of coiling, which may be termed “zero coiling”, has a subtle but crucial difference which will now be described with the aid of Figures 3(a), (b), (c) and
  • Figure 5 illustrates another embodiment of the first aspect of the present invention, in which the alternating forward and reverse turns of a conductor, rather than spiralling into a helical coil, form a generally planar structure with the axis of each turn, being transverse to the line of the conductor.
  • Figure 6 there is shown a coiled conductor according to a further aspect of the present invention.
  • the conductor of this embodiment is produced using a different method from that described above, but still results in the conductor having substantially no net twist.
  • This method of coiling comprises a combination of essentially two steps which can be performed in reversible order or simultaneously. One step requires the conductor to be twisted along its own length; the other step entails winding the twisted conductor along a generally helical path.
  • the effect of the twisting action being to counterbalance the residual twist induced by the winding action, thereby producing a cord with no net twist. It is apparent that the winding action of this method is the same as the winding action employed in producing known coiled conductors, and therefore this method readily lends itself to known machinery for the coiling of telephone cords or other extensible electrical leads.
  • the additional twisting step could be implemented by a continually rotating element that feeds the length of conductor through to the winding machinery.

Landscapes

  • Insulated Conductors (AREA)

Abstract

Procédé d'enroulement d'un conducteur, par exemple, un cordon de téléphone, de telle façon que le conducteur ne subit pas de torsion nette, ce qui l'empêche de se tordre ou de vriller. Une technique consiste à enrouler le conducteur dans un sens, puis à l'enrouler sur un tour dans le sens contraire. Le conducteur peut alors adopter une configuration hélicoïdale ou plane. Une deuxième technique consiste à tordre le conducteur sur sa longueur et à enrouler simultanément la longueur soumise à la torsion sur un trajet généralement hélicoïdal.
PCT/GB1995/001663 1994-07-14 1995-07-14 Procede d'enroulement d'un conducteur et conducteur enroule WO1996002921A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9414240A GB9414240D0 (en) 1994-07-14 1994-07-14 Method of coiling and a coiled conductor
GB9414240.3 1994-07-14

Publications (2)

Publication Number Publication Date
WO1996002921A1 true WO1996002921A1 (fr) 1996-02-01
WO1996002921B1 WO1996002921B1 (fr) 1996-02-22

Family

ID=10758341

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/001663 WO1996002921A1 (fr) 1994-07-14 1995-07-14 Procede d'enroulement d'un conducteur et conducteur enroule

Country Status (2)

Country Link
GB (1) GB9414240D0 (fr)
WO (1) WO1996002921A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6961440B1 (en) * 2000-02-08 2005-11-01 Pacific Coast Laboratories, Inc. Electro-acoustic system
WO2008115383A3 (fr) * 2007-03-19 2008-12-31 Boston Scient Neuromodulation Procédés et appareil de fabrication de fils à partir de conducteurs et configurations de fil souple concernées
US9492651B2 (en) 2007-03-19 2016-11-15 MRI Interventions, Inc. MRI and RF compatible leads and related methods of operating and fabricating leads

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE616791C (de) * 1932-02-28 1935-08-05 Otto Paetsch Verfahren zum streckbaren Verlegen elektrischer Erdkabel
US2452431A (en) * 1945-02-09 1948-10-26 Kellogg Switchboard & Supply Production of vulcanizable elastic coil cables having reversingly coiled portions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE616791C (de) * 1932-02-28 1935-08-05 Otto Paetsch Verfahren zum streckbaren Verlegen elektrischer Erdkabel
US2452431A (en) * 1945-02-09 1948-10-26 Kellogg Switchboard & Supply Production of vulcanizable elastic coil cables having reversingly coiled portions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6961440B1 (en) * 2000-02-08 2005-11-01 Pacific Coast Laboratories, Inc. Electro-acoustic system
WO2008115383A3 (fr) * 2007-03-19 2008-12-31 Boston Scient Neuromodulation Procédés et appareil de fabrication de fils à partir de conducteurs et configurations de fil souple concernées
US9248270B2 (en) 2007-03-19 2016-02-02 Boston Scientific Neuromodulation Corporation Methods and apparatus for fabricating leads with conductors and related flexible
US9492651B2 (en) 2007-03-19 2016-11-15 MRI Interventions, Inc. MRI and RF compatible leads and related methods of operating and fabricating leads
US9630000B2 (en) 2007-03-19 2017-04-25 Boston Scientific Neuromodulation Corporation Methods and apparatus for fabricating leads with conductors and related flexible lead configurations
US10391307B2 (en) 2007-03-19 2019-08-27 Boston Scientific Neuromodulation Corporation MRI and RF compatible leads and related methods of operating and fabricating leads

Also Published As

Publication number Publication date
GB9414240D0 (en) 1994-08-31

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