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Publication numberUS2143649 A
Publication typeGrant
Publication dateJan 10, 1939
Filing dateJul 23, 1937
Priority dateJan 5, 1937
Also published asDE693929C
Publication numberUS 2143649 A, US 2143649A, US-A-2143649, US2143649 A, US2143649A
InventorsFelix Dansard
Original AssigneeFelix Dansard
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Extensible electrical conductor cord or ribbon
US 2143649 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Jan. '10, 1939. F. DANS ARD I 2,143,649

' EXTENSIBLE ELECTRICAL CONDUCTOR CORD 0R RIIBBON Filed July 25, 1937 fil/xDq/vsmazz IN VE N TOR BY ag 4 Q.

A TTORNEX-i' Patented Jan. 10, 1939 UNITED STATES PATENT OFFICE Felix Dansard, Saint-Chamond, France Application July 23, 1937, Serial No. 155,189 In France January 5, 1937 5 Claims.

Flexible wire is commonly used for connecting together movable electrical apparatus or for connecting them with sockets or other fixed points, such for instance as telephonic receivers or emitters, electric irons, radio apparatus, portable lamps, and so on.

These electric wires, generally enclosed in a plaited cord, have a tendency to twist so as to form spirals which constitute a serious inconvenience and gradually produce deterioration of the cable. For instance, in the case of a telephonic apparatus, it is frequently necessary to untwist the cord, which, in the course of a conversation, constitutes a nuisance and a loss of time.

The object of the present invention is to provide an electrical conductor system which obviates these drawbacks.

According to the essential feature of the present invention, this conductor system is constituted by the combination of two elements, on the one hand and inextensible support carrying, incorporated therein, the electric wire or wires, this support being normally folded upon itself and consisting preferably of an accordion plaited band, and on the other hand, an elastic element, for instance a rubber cord or a spring, connected at its ends to the respective ends of said plaited band, and passing through a series of holes formed in said band, so as to be guided therein, said elastic element being, in its normal unstretched state, shorter than the inextensible element, so as to urge it toward its folded, or plaited, state.

The extensibility of such a system depends on the one hand upon the extensibility of the elastic element, and on the other hand upon the distance between two consecutive holes of the inextensible support band, that is to say in the case of an accordion plaiting the length of each plait.

The conductor system according to the invention is extremely flexible and will last for a long time, since, in case of deterioration of the elastic element, it sufllces to replace it forgiving back the cord or ribbon its properties of extensibility.

The folding of the woven or braided ribbon greatly reduces the space it occupies and multiplies the development thereof to a substantial degree.

The utilization of this conductor system is therefore especially advantageous in connection with telephonic apparatus, radio receivers and.

emitters, and also electric irons, vacuum cleaners, and similar apparatus, for replacing the usual rigid cords, which are long and awkward, lie on the ground and finally deteriorate.

A preferred embodiment of the present invention will be hereinafter described, with reference to the accompanying drawing, given merely by 5 way of example, and in'which:

Figs. 1, 2 and 3 show in plan view, and in section on the lines 2-2 and 3-3 of Fig. 1, respectively a ribbon adapted to act as a support for electrical conductors according to the invention;

Fig. 4 is a plan view of a small length of an elastic cord;

Figs. 5 and 6 show an end of an extensible cord respectively in the state of rest and partly elongated.

According to the present invention, the electrical conductor wires 1 are enclosed in an inextensible ribbon 2 which is braided or woven, and they are arranged side by side with the desirable precautions for obtaining an insulation corresponding to the conditions of use.

Along the edges of the ribbon or preferably in its median part, and either at regular intervals or not, are provided apertures 3 consisting either of slits or of holes with eyelets. 2

This ribbon 2, either braided or woven, is carefully folded, the number of plaits being equal to that of apertures 3. A spring or rubber cord 4, either bare or coated is introduced in saidapertures and theplaits of ribbon 2 are brought as close as possible to one another. Then the spring or rubber cord 4 is securely connected at each end to the corresponding end 5 of the ribbon, either directly or by sewing or by means of a binder 6. 3

It will be readily understood that, when the plaited ribbon 2 is stretched, it is elongated and when it is released it comes back to its folded position owing to the action of elastic cord or spring 4.

In a general manner, it should be well understood that the invention is not in any way limited to the above described embodiment, as there might be changes made in the arrangement, disposition and form of the parts without departing from the principle of the present invention as comprehended within the scope of the appended claims.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. An extensible electrical conductor system which comprises, in combination, an inextensible support in the form of an elongated element pro- 55 vided with a plurality of holes along its length, at least one electrical conductor incorporated in said support, an elastic element extending through said holes and of a length in the unstretched state shorter than that of said support, and means for connecting the respective ends of said support and said elastic element.

2. An extensible electrical conductor system which comprises, in combination, an inextensible support in the form of a band provided with a plurality of holes along its length, at least one electrical conductor incorporated in said band, an elastic element extending through said holes and of a length in the unstretched state shorter than that of said support, and means for interconnecting the respective ends of said support and said elastic element.

3. An extensible electrical conductor system which comprises, in combination, an inextensible support in the form of a band provided with a plurality of holes along its length, at least one electrical conductor incorporated in said band, a rubber cord extending through said holes and of a length in the unstretched state shorter than that of said support, and means for interconnecting the respective ends of said band and said rubber cord.

4. An extensible electrical conductor system which comprises, in combination, an inextensible support in the form of a band provided with a plurality of holes along its length, said holes being so positioned that by folding said band in an accordion-plaited manner they are all in line, at least one electrical conductor incorporated in said band, a rubber cord extending through said holes and of a length in the unstretched state shorter than that of said support, so as to urge said band toward the accordion-plaited state thereof, and means for interconnecting the respective ends of said band and said rubber cord.

5. An extensible electrical conductor system which comprises, in combination, an inextensible support in the form of a band provided with a plurality of holes so positioned that by folding said band in an accordion-planted manner they are all brought into a line, a plurality of parallel electrical conductors incorporated in said band, a rubber cord extending through said holes and of a length in the unstretched state shorter than that of said support, so as to urge said band toward the accordion-plaited state thereof, and means for interconnecting the respective ends of said band and said rubber cord.

FELIX DANSARD.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2441236 *Nov 6, 1946May 11, 1948Marie Dansard Felix JeanExtensible electric conductor
US2652444 *Sep 13, 1950Sep 15, 1953Marie Dansard Felix JeanExtensible electric cord
US2951111 *Jan 16, 1957Aug 30, 1960Engelhard Ind IncLead wire tape
US3127469 *Feb 28, 1962Mar 31, 1964Commercial Engineering CorpFlexible towline with electrical conductor harness
US3399909 *Feb 17, 1966Sep 3, 1968Honeywell IncTransmitting apparatus
US3429614 *Nov 6, 1963Feb 25, 1969Huggins James ARetractable seat belt
US3809800 *Apr 25, 1973May 7, 1974NasaMeans for accommodating large overstrain in lead wires
US4313645 *May 13, 1980Feb 2, 1982Western Electric Company, Inc.Telephone cord having braided outer jacket
US6293676Feb 17, 1999Sep 25, 2001Garrett W. BrownCamera support including extendable post
US7202414 *Feb 22, 2005Apr 10, 2007Johnson Jason GApparatus and method for manipulating a line such as a cable or cord
US7465678Jan 17, 2006Dec 16, 2008The Trustees Of Princeton UniversityDeformable organic devices
US7491892 *Mar 28, 2003Feb 17, 2009Princeton UniversityStretchable and elastic interconnects
US8106301 *Sep 15, 2010Jan 31, 2012Hon Hai Precision Industry Co., Ltd.Connecting member
US8383942 *Oct 8, 2010Feb 26, 2013Hon Hai Precision Industry Co., Ltd.Connecting member
US20040192082 *Mar 28, 2003Sep 30, 2004Sigurd WagnerStretchable and elastic interconnects
US20060169989 *Jan 17, 2006Aug 3, 2006Rabin BhattacharyaDeformable organic devices
US20060185873 *Feb 22, 2005Aug 24, 2006Johnson Jason GApparatus and method for manipulating a line such as a cable or cord
US20110287660 *Oct 8, 2010Nov 24, 2011Hon Hai Precision Industry Co., Ltd.Connecting member
USRE31197 *Apr 9, 1982Apr 5, 1983Western Electric Company, Inc.Telephone cord having braided outer jacket
CN102237628A *May 6, 2010Nov 9, 2011鸿富锦精密工业(深圳)有限公司Connecting piece and electronic device with connecting piece
WO1999041540A3 *Feb 17, 1999Sep 23, 1999Garrett W BrownMobile camera support system with extendible post and stiffening system
WO2006091472A2 *Feb 17, 2006Aug 31, 2006Johnson Jason GApparatus and method for manipulating a line such as a cable or cord
WO2006091472A3 *Feb 17, 2006Dec 14, 2006Jason G JohnsonApparatus and method for manipulating a line such as a cable or cord
WO2013103970A1 *Jan 7, 2013Jul 11, 2013MoxytronixApparatus and method for manipulating a flat cord
Classifications
U.S. Classification174/69, 139/384.00R
International ClassificationH01B7/06
Cooperative ClassificationH01B7/06
European ClassificationH01B7/06